Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00001.X
R. Banerjee, K. Shivkumar, T. Thomas, Jugina Thomas, M. S. Pandian
Radioactive granitoids and cherty cataclasites are delineated in Thadisaoli–Khatgaon and Shahpur–Sujayatpur sectors in southeastern part of Nanded district, Maharashtra, which have recorded anomalous radioelemental contents (Granites: upto 1% U3O8 and 0.20% ThO2; Cherty cataclasites upto 0.11% U3O8 and <0.005% ThO2) and enrichment in trace element and rare metal and rare earth element concentration (Nb: upto 146ppm, Y: upto 226ppm, Zr: upto 559ppm and total REE: upto 2010ppm). The mineralised granitoids are affected by profuse pegmatitic/quartzo-feldspathic, quartz and epidote venations and mainly confined along the NE–SW and NNE–SSW faults/shear zones. Radioactive phases are represented by discrete uranium/thorium ore minerals (uraninite, β-uranophane and thorite) and high content of resistates viz., apatite, zircon, allanite, sphene, cerianite, monazite and ilmenite.
{"title":"Fluid inclusion study of radioactive granitoids and cherty cataclasite in the southeastern part of Nanded district, Maharashtra: implications for Uranium mineralisation","authors":"R. Banerjee, K. Shivkumar, T. Thomas, Jugina Thomas, M. S. Pandian","doi":"10.5958/2319-4316.2014.00001.X","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00001.X","url":null,"abstract":"Radioactive granitoids and cherty cataclasites are delineated in Thadisaoli–Khatgaon and Shahpur–Sujayatpur sectors in southeastern part of Nanded district, Maharashtra, which have recorded anomalous radioelemental contents (Granites: upto 1% U3O8 and 0.20% ThO2; Cherty cataclasites upto 0.11% U3O8 and <0.005% ThO2) and enrichment in trace element and rare metal and rare earth element concentration (Nb: upto 146ppm, Y: upto 226ppm, Zr: upto 559ppm and total REE: upto 2010ppm). The mineralised granitoids are affected by profuse pegmatitic/quartzo-feldspathic, quartz and epidote venations and mainly confined along the NE–SW and NNE–SSW faults/shear zones. Radioactive phases are represented by discrete uranium/thorium ore minerals (uraninite, β-uranophane and thorite) and high content of resistates viz., apatite, zircon, allanite, sphene, cerianite, monazite and ilmenite.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"32 1","pages":"361-380"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90493851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00007.0
S. Saraf
Lithium addition to the molten bath during production of Aluminium metal has its benefits in terms of the quality of metal produced. The quantity of lithium salt to be added to the bath is determined by utilising proper material, machine and method. The present study describes the method by two proper routes. One of the methods is by X-ray-Diffraction and other by flame photometric method. The metal standards are used in varied proportion from a considerable range from lower level to an optimum level. Samples of different concentrations are taken by the flake methods of sampling from electrolytic pots. The samples have been divided to two parts as per the standard method of coning and quartering. Samples are ground to -150 Tyler mesh and made in to pellets. Samples are analysed by X-ray diffractometer and flame photometer.
{"title":"Lithium additives in Aluminium production","authors":"S. Saraf","doi":"10.5958/2319-4316.2014.00007.0","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00007.0","url":null,"abstract":"Lithium addition to the molten bath during production of Aluminium metal has its benefits in terms of the quality of metal produced. The quantity of lithium salt to be added to the bath is determined by utilising proper material, machine and method. The present study describes the method by two proper routes. One of the methods is by X-ray-Diffraction and other by flame photometric method. The metal standards are used in varied proportion from a considerable range from lower level to an optimum level. Samples of different concentrations are taken by the flake methods of sampling from electrolytic pots. The samples have been divided to two parts as per the standard method of coning and quartering. Samples are ground to -150 Tyler mesh and made in to pellets. Samples are analysed by X-ray diffractometer and flame photometer.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"31 4 1","pages":"422-425"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87009134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00010.0
P. Sudha
India's rise as a global power has made it an extremely lucrative market, especially in the field of nuclear energy. Nuclear energy is often painted as a ‘clean’ energy option, and therefore a solution to climate change. Splitting the atom doesn't produce greenhouse gases, but the nuclear fuel cycle is far from clean: it produces radioactive waste that pollutes the environment for generations. As the most populous democracy in the world, India's energy needs far exceed its current capacity and to achieve this, the Government of India intends to draw twenty-five percent of its energy from nuclear power by the year 2050. This plan includes 20,000 MW of installed capacity from nuclear energy by 2020, and 63,000 MW by 2032. There are currently twenty operational nuclear power reactors in India, across six states. They contribute less than three per cent of the country's total energy generation, yet radioactively pollute at every stage of the nuclear fuel cycle: from mining and milling to reprocessing or disposal. There is no long-term radioactive waste disposal policy in India. India is one of the few countries in the world that is expanding its nuclear power sector at an enormous rate. Seven more nuclear reactors of 4800 MW installed capacity are under construction. At least thirty-six new nuclear reactors are planned or proposed. A critical subset of any country's nuclear safety approach is its radioactive waste management, in particular management of High Level Waste.
{"title":"Legal aspects of handling and disposal of nuclear waste – an Indian perspective","authors":"P. Sudha","doi":"10.5958/2319-4316.2014.00010.0","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00010.0","url":null,"abstract":"India's rise as a global power has made it an extremely lucrative market, especially in the field of nuclear energy. Nuclear energy is often painted as a ‘clean’ energy option, and therefore a solution to climate change. Splitting the atom doesn't produce greenhouse gases, but the nuclear fuel cycle is far from clean: it produces radioactive waste that pollutes the environment for generations. As the most populous democracy in the world, India's energy needs far exceed its current capacity and to achieve this, the Government of India intends to draw twenty-five percent of its energy from nuclear power by the year 2050. This plan includes 20,000 MW of installed capacity from nuclear energy by 2020, and 63,000 MW by 2032. There are currently twenty operational nuclear power reactors in India, across six states. They contribute less than three per cent of the country's total energy generation, yet radioactively pollute at every stage of the nuclear fuel cycle: from mining and milling to reprocessing or disposal. There is no long-term radioactive waste disposal policy in India. India is one of the few countries in the world that is expanding its nuclear power sector at an enormous rate. Seven more nuclear reactors of 4800 MW installed capacity are under construction. At least thirty-six new nuclear reactors are planned or proposed. A critical subset of any country's nuclear safety approach is its radioactive waste management, in particular management of High Level Waste.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"50 1","pages":"444-453"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83746770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00008.2
S. Pramanik, D. P. Kuity
The impact of water pollution on aquatic life and land life can be devastating. The study area Raipur City (C.G.) had 120 tanks in past but at present less than 50 tanks remain and they are struggling for existence. The water in these tanks is polluted and is not used for drinking purposes but used for fish culture and other purposes. In the present study 13 tanks have been selected and 39 water samples have been collected from three places at each tank, were fourteen parameters were determined, namely – DO, pH, TDS, TH, Conductivity, Salinity and Temperature, by using digital DO meter and Water and Soil Analyses Kit. Sulphate and Phosphate are determined by Spectrophotometer. Chloride, Calcium and Magnesium have been determined by titration method and Na and K were determined by Systronics Flame Photometer. Humans taking bath along with animals in these tanks has caused “Rino Sporodiosis”. Persons using the water from these tanks are suffer mainly from stomach and skin diseases. In some of these tanks waste liquid flows and solid waste materials are dumped. Few tanks are covered by aquatic plants. Water colour is not only dirty (all most translucent) but also gives a bad smell. All these above parameters vary from one tank to other tank and are co-relatable with the scenario of pollution. Dissolved Oxygen in water varies from 7.1 to 9.0 ppm and pH varies from 6.92 to 8.85. TDS varies from 0.22 to 1.36 epm, Salinity varies from 0.1 to 1.4 epm, Conductivity varies from 0.33 to 2.13 epm, Na and K varies from 0.10 to 0.29 epm and 0.05 to 0.93 epm respectively. Sulphate, Phosphate and Chloride varies from 0.109 to 0.685 epm, 0.28 to 3.39 epm and 109.90 to 422.21 epm respectively. Calcium varies from 40 to 205 epm, Magnesium 50 to 270 epm and Total Hardness varies from 90 to 333 epm. Surface temperature of tank water which varies from 27.5°C to 31.4°C. Present study indicates that water pollution in these tanks is mainly caused by anthropogenic activities which are responsible for environmental hazards. On comparisons of the water with the standards, it is concluded that the water is not suitable for drinking purposes.
{"title":"Water pollution causing environmental hazards in Raipur city, Chhattisgarh","authors":"S. Pramanik, D. P. Kuity","doi":"10.5958/2319-4316.2014.00008.2","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00008.2","url":null,"abstract":"The impact of water pollution on aquatic life and land life can be devastating. The study area Raipur City (C.G.) had 120 tanks in past but at present less than 50 tanks remain and they are struggling for existence. The water in these tanks is polluted and is not used for drinking purposes but used for fish culture and other purposes. In the present study 13 tanks have been selected and 39 water samples have been collected from three places at each tank, were fourteen parameters were determined, namely – DO, pH, TDS, TH, Conductivity, Salinity and Temperature, by using digital DO meter and Water and Soil Analyses Kit. Sulphate and Phosphate are determined by Spectrophotometer. Chloride, Calcium and Magnesium have been determined by titration method and Na and K were determined by Systronics Flame Photometer. Humans taking bath along with animals in these tanks has caused “Rino Sporodiosis”. Persons using the water from these tanks are suffer mainly from stomach and skin diseases. In some of these tanks waste liquid flows and solid waste materials are dumped. Few tanks are covered by aquatic plants. Water colour is not only dirty (all most translucent) but also gives a bad smell. All these above parameters vary from one tank to other tank and are co-relatable with the scenario of pollution. Dissolved Oxygen in water varies from 7.1 to 9.0 ppm and pH varies from 6.92 to 8.85. TDS varies from 0.22 to 1.36 epm, Salinity varies from 0.1 to 1.4 epm, Conductivity varies from 0.33 to 2.13 epm, Na and K varies from 0.10 to 0.29 epm and 0.05 to 0.93 epm respectively. Sulphate, Phosphate and Chloride varies from 0.109 to 0.685 epm, 0.28 to 3.39 epm and 109.90 to 422.21 epm respectively. Calcium varies from 40 to 205 epm, Magnesium 50 to 270 epm and Total Hardness varies from 90 to 333 epm. Surface temperature of tank water which varies from 27.5°C to 31.4°C. Present study indicates that water pollution in these tanks is mainly caused by anthropogenic activities which are responsible for environmental hazards. On comparisons of the water with the standards, it is concluded that the water is not suitable for drinking purposes.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"93 1","pages":"426-435"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87393630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00009.4
A. H. Khan, Naseem, E. C. Reddy
Drinking water source was open dug wells but as time passed these wells became dry due to decrease in ground water column. Present day locations under study get the drinking water from bore wells. These water sources are safe and hygienic compared to open dug wells. Health complaints after consumption of this water were alarming and it was envisaged to check their quality by chemical analysis. A systematic investigation of variations in some nutrient levels from 58 locations in Nizamabad mandal, Nizamabad district was carried out from August 2012 to July 2013. 457 samples from bore wells/hand pumps, which serve as drinking water sources in the locations of these studies, were sampled. The present investigation was undertaken to assess the magnitude of pollution by monitoring key water quality parameters like pH, turbidity, alkalinity, total hardness, and various ions such as Ca, Cl, F, Mg NO3- and SO42- by following the standard methods of APHA (American Public Health Association, 1998).
饮用水源为露天挖井，但随着时间的推移，由于地下水柱的减少，这些井逐渐干涸。目前正在研究的地点从井中获取饮用水。与露天挖井相比，这些水源安全卫生。饮用这种水后的健康投诉令人震惊，预计将通过化学分析检查其质量。2012年8月至2013年7月，对尼扎马巴德地区尼扎马巴德曼达尔58个地点的一些营养水平变化进行了系统调查。从这些研究地点作为饮用水源的钻孔/手泵抽取了457个样本。本研究采用美国公共卫生协会(American Public Health Association, 1998)的标准方法，通过监测关键水质参数，如pH值、浊度、碱度、总硬度和各种离子，如Ca、Cl、F、Mg NO3-和SO42-，来评估污染程度。
{"title":"Drinking water with fluoride pollution risk to human health","authors":"A. H. Khan, Naseem, E. C. Reddy","doi":"10.5958/2319-4316.2014.00009.4","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00009.4","url":null,"abstract":"Drinking water source was open dug wells but as time passed these wells became dry due to decrease in ground water column. Present day locations under study get the drinking water from bore wells. These water sources are safe and hygienic compared to open dug wells. Health complaints after consumption of this water were alarming and it was envisaged to check their quality by chemical analysis. A systematic investigation of variations in some nutrient levels from 58 locations in Nizamabad mandal, Nizamabad district was carried out from August 2012 to July 2013. 457 samples from bore wells/hand pumps, which serve as drinking water sources in the locations of these studies, were sampled. The present investigation was undertaken to assess the magnitude of pollution by monitoring key water quality parameters like pH, turbidity, alkalinity, total hardness, and various ions such as Ca, Cl, F, Mg NO3- and SO42- by following the standard methods of APHA (American Public Health Association, 1998).","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"7 1","pages":"436-443"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74246086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00005.7
S. Nair, V. Umashankar, Usha Nathan, S. Durani
Removal of Arsenic from mine water is carried out using iron oxide coated brick (IOCB). A detailed study regarding preparation of the adsorbent, adsorption capacity for arsenic on IOCB, pH effect, time taken for the sorption and its application to mine water using synthetic mine water doped with arsenic is presented in this paper. The adsorption capacity for As on IOCB at a pH of 7.5 is 0.31mg/g. Batch studies showed that maximum sorption is at the pH range 6–8 and the time required is 24 hrs at that constant pH. Column studies reveal that arsenic is adsorbed instantly making the mine water free of arsenic. The Red brick can easily be desorbed using 2% sodium carbonate solution.
{"title":"Removal of arsenic from mine water and effluents using iron oxide coated red brick","authors":"S. Nair, V. Umashankar, Usha Nathan, S. Durani","doi":"10.5958/2319-4316.2014.00005.7","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00005.7","url":null,"abstract":"Removal of Arsenic from mine water is carried out using iron oxide coated brick (IOCB). A detailed study regarding preparation of the adsorbent, adsorption capacity for arsenic on IOCB, pH effect, time taken for the sorption and its application to mine water using synthetic mine water doped with arsenic is presented in this paper. The adsorption capacity for As on IOCB at a pH of 7.5 is 0.31mg/g. Batch studies showed that maximum sorption is at the pH range 6–8 and the time required is 24 hrs at that constant pH. Column studies reveal that arsenic is adsorbed instantly making the mine water free of arsenic. The Red brick can easily be desorbed using 2% sodium carbonate solution.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"102 1","pages":"409-414"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82081457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00002.1
S. John, M. Sagar, K. Maya, D. Padmalal
Studies on the geochemical reactions between sediments and overlying waters of freshwater systems have received considerable attention in the past few decades as these reactions impart significant changes in the quality of overlying waters. Although many studies are available in the global scientific scenario, not much effort has been made in India and practically very little information is available about Kerala, a state endowed with numerous lakes and backwaters. Here we report the level variabilities of dissolved nutrients such as NO3-N and PO4-P, and Fe in the surface, bottom and interstitial waters of the Sasthamkotta and Vellayani lakes– two important perennial freshwater sources in southern Kerala. Further the Lake Sasthamkotta, the largest fresh water lake of Kerala, is declared as a Ramsar site of international importance. NO3-N, PO4-P and Fe exhibit marked increase in the interstitial water compared to overlying waters. Among these two lake systems, the content of NO3-N is higher in the Vellayani lake than the Sasthamkotta lake, whereas the concentrations of PO4-P and Fe are marginally higher in the overlying waters of the Sasthamkotta lake. However the interstitial water samples of Vellayani lake record higher PO4-P and Fe values. Although fertilizer intensive agricultural activities around the lake systems are one of the major causative factors for the enhanced concentrations of nutrients in the overlying waters, early diagenetic release of nutrients and Fe also plays a pivotal role in enriching these hydrochemical signals in the lake systems.
{"title":"Dissolved nutrients (NO3-N and PO4-P) and Fe in the interstitial and overlying waters of two tropical freshwater lakes in Southern Kerala, India","authors":"S. John, M. Sagar, K. Maya, D. Padmalal","doi":"10.5958/2319-4316.2014.00002.1","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00002.1","url":null,"abstract":"Studies on the geochemical reactions between sediments and overlying waters of freshwater systems have received considerable attention in the past few decades as these reactions impart significant changes in the quality of overlying waters. Although many studies are available in the global scientific scenario, not much effort has been made in India and practically very little information is available about Kerala, a state endowed with numerous lakes and backwaters. Here we report the level variabilities of dissolved nutrients such as NO3-N and PO4-P, and Fe in the surface, bottom and interstitial waters of the Sasthamkotta and Vellayani lakes– two important perennial freshwater sources in southern Kerala. Further the Lake Sasthamkotta, the largest fresh water lake of Kerala, is declared as a Ramsar site of international importance. NO3-N, PO4-P and Fe exhibit marked increase in the interstitial water compared to overlying waters. Among these two lake systems, the content of NO3-N is higher in the Vellayani lake than the Sasthamkotta lake, whereas the concentrations of PO4-P and Fe are marginally higher in the overlying waters of the Sasthamkotta lake. However the interstitial water samples of Vellayani lake record higher PO4-P and Fe values. Although fertilizer intensive agricultural activities around the lake systems are one of the major causative factors for the enhanced concentrations of nutrients in the overlying waters, early diagenetic release of nutrients and Fe also plays a pivotal role in enriching these hydrochemical signals in the lake systems.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"34 1","pages":"381-392"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88554106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00003.3
Nishma Ojha, Bincy Cyriac, S. Durani
Molybdenum accompanies uranium in various types of deposits and plays an important role as a pathfinder element in the hydrogeochemical survey for uranium. In the present study, coconut husk was used for the pre-concentration of molybdenum in hydrogeochemical samples, prior to its analysis by ICP-OES. Quantitative sorption of molybdenum was observed at pH 2 and desorption was achieved by 8M HNO3. Enrichment factor obtained by this procedure was 50. Molybdenum concentrations up to 1.0 ng/ml can be determined easily after pre-concentration using this method. This pre-concentration technique was applied for the determination of molybdenum in hydrogeochemical samples.
{"title":"Pre-concentration of molybdenum in water samples using coconut husk","authors":"Nishma Ojha, Bincy Cyriac, S. Durani","doi":"10.5958/2319-4316.2014.00003.3","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00003.3","url":null,"abstract":"Molybdenum accompanies uranium in various types of deposits and plays an important role as a pathfinder element in the hydrogeochemical survey for uranium. In the present study, coconut husk was used for the pre-concentration of molybdenum in hydrogeochemical samples, prior to its analysis by ICP-OES. Quantitative sorption of molybdenum was observed at pH 2 and desorption was achieved by 8M HNO3. Enrichment factor obtained by this procedure was 50. Molybdenum concentrations up to 1.0 ng/ml can be determined easily after pre-concentration using this method. This pre-concentration technique was applied for the determination of molybdenum in hydrogeochemical samples.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"34 1","pages":"393-398"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80451175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00006.9
T. K. Baidya
Some barite-bearing pegmatites in the Ukma-Nawahatu-Hursi sector (23° 25’ -26’ N, 86° 02’ -04’ E) in Purulia district, West Bengal, have association of radioactive minerals in the form of coarse-grained pitchblack lumps and irregular patches. The present author and his associates first reported the occurrence of this radioactive belt along a ENE-WSW shearzone during their fieldwork in November,1978 (Baidya et., al.,1979). Groundborne radiometric survey and isorad mapping has established a radioactive high zone of about 15 km length running through Ukma, Nawahatu and Hursi areas. Mineralogical studies of the radioactive minerals have revealed the occurrence of Chevkinite, Aeschynite, Brannerite, Allanite, Uraninite, Tyuyamunite, Davidite, Euxenite, Samarskite, Thorutite, Autunite, Cerianite, in association with quartz, barite, microcline as the principal minerals and various minor minerals like biotite, vermiculite, hornblende, augite, orthoclase, celsian, muscovite, calcite, epidote, zoisite, ilmenite, sphene, rutile, hematite, magnetite, anatase, galena and sodic plagioclase. The barite-bearing pegmatites occur as lenses or lenticular veins hosted by garnetiferous sillimanite-biotite-quartz-schist or occasionally by migmatite. Near Nawahatu the radioactive barite-pegmatite vein occurs at or near the junction between the footwall amphibolite and hangingwall garnetiferous schist. The pegmatite veins have followed mainly schistosity of the host rock and dip at 70°-80° towards south. Chemical analyses of individual radioactive minerals by SEM-EDX and also of the bulk radioactive lumps by ICP-MS have shown significant concentration of U, Th and Rare earths. Minor and trace element analyses also record notable contents of Zr, Ga, Sc, Pb, Zn, Nb, Cu, Ni, V, Cr, As, W, Pd, Ag and Tl. Details of chemical analytical data are presented here. Chemically active fluids generated during metamorphism, metasomatism and granitic activity appear to have played a significant role in the formation of these pegmatites. Detailed exploration (geochemical, geophysical and geological) aided by excavation work (pitting, trenching and exploratory drilling) and chemical analyses for major, minor and trace elements is expected to reveal the feasibility status of these pegmatites as a possible U-Th-REE resource.
{"title":"Geochemistry and mineralogy of the radioactive minerals associated with some pegmatite veins of the Ukma-Nawahatu- Hursi sector, Purulia district, W.B., in The Precambrian Chhotanagpur Gneissic Complex","authors":"T. K. Baidya","doi":"10.5958/2319-4316.2014.00006.9","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00006.9","url":null,"abstract":"Some barite-bearing pegmatites in the Ukma-Nawahatu-Hursi sector (23° 25’ -26’ N, 86° 02’ -04’ E) in Purulia district, West Bengal, have association of radioactive minerals in the form of coarse-grained pitchblack lumps and irregular patches. The present author and his associates first reported the occurrence of this radioactive belt along a ENE-WSW shearzone during their fieldwork in November,1978 (Baidya et., al.,1979). Groundborne radiometric survey and isorad mapping has established a radioactive high zone of about 15 km length running through Ukma, Nawahatu and Hursi areas. Mineralogical studies of the radioactive minerals have revealed the occurrence of Chevkinite, Aeschynite, Brannerite, Allanite, Uraninite, Tyuyamunite, Davidite, Euxenite, Samarskite, Thorutite, Autunite, Cerianite, in association with quartz, barite, microcline as the principal minerals and various minor minerals like biotite, vermiculite, hornblende, augite, orthoclase, celsian, muscovite, calcite, epidote, zoisite, ilmenite, sphene, rutile, hematite, magnetite, anatase, galena and sodic plagioclase. The barite-bearing pegmatites occur as lenses or lenticular veins hosted by garnetiferous sillimanite-biotite-quartz-schist or occasionally by migmatite. Near Nawahatu the radioactive barite-pegmatite vein occurs at or near the junction between the footwall amphibolite and hangingwall garnetiferous schist. The pegmatite veins have followed mainly schistosity of the host rock and dip at 70°-80° towards south. Chemical analyses of individual radioactive minerals by SEM-EDX and also of the bulk radioactive lumps by ICP-MS have shown significant concentration of U, Th and Rare earths. Minor and trace element analyses also record notable contents of Zr, Ga, Sc, Pb, Zn, Nb, Cu, Ni, V, Cr, As, W, Pd, Ag and Tl. Details of chemical analytical data are presented here. Chemically active fluids generated during metamorphism, metasomatism and granitic activity appear to have played a significant role in the formation of these pegmatites. Detailed exploration (geochemical, geophysical and geological) aided by excavation work (pitting, trenching and exploratory drilling) and chemical analyses for major, minor and trace elements is expected to reveal the feasibility status of these pegmatites as a possible U-Th-REE resource.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"10 1","pages":"415-421"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77550936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.5958/2319-4316.2014.00004.5
C. M. Rao, G. Sudhakar
Radionuclide and metal pollution is a global environmental problem and the number of contaminants entering the environment has increased greatly in recent times due to increased mining activities. Uranium mill tailings are the powdered rock residues obtained after uranium extraction by hydrometallurgical process from Uranium ores. The tailing effluents and solids from the mill are discharged as a slurry to a waste retention pond, the tailing pond. A study was undertaken for a period of three years to evaluate the potential of native plant species for phytoremediation of tailing ponds of the Uranium mines at Jaduguda in Jharkhand state. Electrical conductivity (EC), pH of the tailings and metals like Al, V, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Cd, Pb and the 3 radionuclides (Co, Sr and U) were analysed. From the analysis of sediment/soil/water/effluent of tailing ponds, eight elements (Al,U, Mn, V, Fe, Ni, Cu and Zn) were found to be significantly in higher concentrations in the tailing soils. U and Mn were found to be the predominant contaminants. Twenty six native forest plant species were screened for their ability to accumulate and remediate the contaminated soils. Considering various factors of suitability of the plant species for phytoremediation, four plant species viz; Sacchurum spontaneum(Al 54 ppm, Mn 31 ppm,U 8ppm, Cr 16ppm), Typha latifolia(Cr 2ppm,U 3ppm, Mn 68 ppm, Sr 2 ppm, Pb 3 ppm), Pteris vittata(Mn 211 ppm, Pb 4ppm, U 4ppm) and Cyprus compressus(U 2ppm, Mn 76 ppm) are found to hold good potential for phytoremediation of heavy metals and radionuclides from tailings of the Jaduguda uranium mine.
{"title":"Phytoremediation studies of forest plants growing in and around uranium tailing ponds in Jaduguda, Jharkhand, India - A case study","authors":"C. M. Rao, G. Sudhakar","doi":"10.5958/2319-4316.2014.00004.5","DOIUrl":"https://doi.org/10.5958/2319-4316.2014.00004.5","url":null,"abstract":"Radionuclide and metal pollution is a global environmental problem and the number of contaminants entering the environment has increased greatly in recent times due to increased mining activities. Uranium mill tailings are the powdered rock residues obtained after uranium extraction by hydrometallurgical process from Uranium ores. The tailing effluents and solids from the mill are discharged as a slurry to a waste retention pond, the tailing pond. A study was undertaken for a period of three years to evaluate the potential of native plant species for phytoremediation of tailing ponds of the Uranium mines at Jaduguda in Jharkhand state. Electrical conductivity (EC), pH of the tailings and metals like Al, V, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Cd, Pb and the 3 radionuclides (Co, Sr and U) were analysed. From the analysis of sediment/soil/water/effluent of tailing ponds, eight elements (Al,U, Mn, V, Fe, Ni, Cu and Zn) were found to be significantly in higher concentrations in the tailing soils. U and Mn were found to be the predominant contaminants. Twenty six native forest plant species were screened for their ability to accumulate and remediate the contaminated soils. Considering various factors of suitability of the plant species for phytoremediation, four plant species viz; Sacchurum spontaneum(Al 54 ppm, Mn 31 ppm,U 8ppm, Cr 16ppm), Typha latifolia(Cr 2ppm,U 3ppm, Mn 68 ppm, Sr 2 ppm, Pb 3 ppm), Pteris vittata(Mn 211 ppm, Pb 4ppm, U 4ppm) and Cyprus compressus(U 2ppm, Mn 76 ppm) are found to hold good potential for phytoremediation of heavy metals and radionuclides from tailings of the Jaduguda uranium mine.","PeriodicalId":15009,"journal":{"name":"Journal of Applied Geochemistry","volume":"150 1","pages":"399-408"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86641846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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