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Assessment of Well drinking Water Quality in Samrab, Dardog and Hattab Communities, Khartoum North, Sudan 苏丹喀土穆北部Samrab、Dardog和Hattab社区井水水质评价
Pub Date : 2017-02-01 DOI: 10.9790/5736-1001023237
Hago M. Abdel-Magid, A. M. Abdellah, Sara M. Abbkar, F. A. Adam
The quality of drinking water in some of the northern suburb communities of Khartoum North, Sudan was investigated with respect to electrical conductivity (EC), total dissolved salts (TDS), pH, major ions (Ca +2 , Mg +2 , Na + , K + , SO4 -2 , NO3 ,HCO3 , Cl ) and total iron, beside coliform bacteria (E.coli and streptococci) as an indicators of fecal contamination. The results obtained revealed that 20% of the samples were above the maximum limit of both 1.6dSm -1 and 1000mgl -1 set by SSMO and WHO for EC and TDS, respectively. About 25% of the samples exceeded the maximum limit of 200 mg/l set by SSMO and WHO for Na + . Most of the major ions and total iron were found within the recommended limits of the local, regional and international standards of drinking water. Microbiological analyses indicated that 55% of the samples were contaminated with coliform bacteria. It may be recommended that continuous assessment of drinking water quality, on routine basis, is imperative and a better management and monitoring are warranted to reduce the deterioration of aquifer water quality in the region.
对苏丹喀土穆北部一些北郊社区的饮用水水质进行了电导率(EC)、总溶解盐(TDS)、pH、主要离子(Ca +2、Mg +2、Na +、K +、SO4 -2、NO3、HCO3、Cl)和总铁的调查,并对大肠菌群(大肠杆菌和链球菌)作为粪便污染指标进行了调查。结果显示,20%的样品分别高于SSMO和WHO对EC和TDS规定的1.6dSm -1和1000mg -1的最大限量。约25%的样品超过了SSMO和WHO规定的Na +最高限量200 mg/l。大多数主要离子和总铁含量都在当地、区域和国际饮用水标准的建议范围内。微生物学分析表明,55%的样品被大肠菌群污染。可以建议必须在日常基础上不断地评价饮用水质量,并有必要进行更好的管理和监测,以减少该区域含水层水质的恶化。
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引用次数: 1
Determination of Heavy Metals in Selected Fish Species found in Kwalkwalawa River, Dundaye. Sokoto State 敦代市Kwalkwalawa河部分鱼类重金属含量测定。索科托州
Pub Date : 2017-02-01 DOI: 10.9790/5736-1001023842
Ejike, L. O., Liman, M. G
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引用次数: 5
Extractive Spectrophotometric Determination of Trace Hg (II) in Eye Drops and Ayurvedic Medicines Using Pyridine 2-Carboxaldehyde 2-Hydroxybenzoylhydrazone 吡啶- 2-甲醛- 2-羟基苯甲酰腙萃取分光光度法测定滴眼液和阿育吠陀药物中痕量汞
Pub Date : 2017-02-01 DOI: 10.9790/5736-1001022431
M. N. Bale, A. D. Sawant, H. Shaikh, D. J. Garole
A rapid, simple and selective spectrophotometric method was developed for the determination of mercury (II) by using reagent, Pyridine-2-carboxaldehyde 2-hydroxybenzoylhydrazone (PAHB). The reagent is highly selective and sensitive and it forms yellow coloured complex with mercury (II) having composition 1:2 (M:L) in alkaline pH range. Absorption of coloured complex in toluene is measured with reagent as blank at ƛmax 385 nm. The beers law is obeyed in concentration range from 0.5-5.8 ppm for mercury (II)Pyridine-2-carboxaldehyde 2-hydroxybenzoylhydrazone complex and it was evaluated from Ringboms plot. Molar absorptivity and Sandells sensitivity value for mercury (II)Pyridine-2-carboxaldehyde 2-hydroxybenzoylhydrazone complex are 5.87 ng cm -2 and 3.14 x 104 l mol -1 cm -1 , respectively. The sensitivity of the developed method was checked in presence of various foreign ions. The method is successfully applied for mercury (II) determination in binary, synthetic mixtures and real pharmaceutical samples. The accuracy and reliability of method was verified by AAS.
建立了以吡啶-2-甲醛-2-羟基苯甲酰腙(PAHB)为试剂,快速、简便、选择性地测定汞(II)的分光光度法。该试剂具有高度的选择性和敏感性,在碱性pH范围内与汞(II)形成组成1:2 (M:L)的黄色络合物。用空白试剂在ƛmax 385 nm处测定了有色配合物对甲苯的吸收。汞(II)吡啶-2-甲醛-2-羟基苯甲酰腙配合物在0.5 ~ 5.8 ppm的浓度范围内符合比尔斯定律,并通过Ringboms图进行了评价。汞(II)吡啶-2-甲醛-2-羟基苯甲酰腙配合物的摩尔吸收率和Sandells灵敏度分别为5.87 ng cm -2和3.14 x 104 l mol -1 cm -1。在各种外来离子存在的情况下,检验了所开发方法的灵敏度。该方法可用于二元、合成混合物和实际药品样品中汞(II)的测定。原子吸收光谱法验证了方法的准确性和可靠性。
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引用次数: 1
Kinetic and Mechanistic study of Oxidative Transformation of Some Amino acid by Pyridiniumchlorochromate in DMF-Water Medium 吡啶-氯铬酸盐在dmf -水介质中氧化转化某些氨基酸的动力学和机理研究
Pub Date : 2017-02-01 DOI: 10.9790/5736-1001022023
S. Rathor, B. K. Dangarh
Oxidation of L-isoleucine and L-valine by PCC was studied in the presence of perchloric acid in DMFH2O medium at 400C. The kinetics of the reaction was followed spectrophotometrically at λ max = 354 nm. The reaction is unit dependence on each of PCC, [H + ] and [substrate]. Michaelis-Menten type kinetics was observed with different amino acid. The reactions were studied at different temperature [25, 30, 35, 40, 45,500C] and activation parameters were computed. The effect of dielectric constant of the medium on the rate was studied. A mechanism consistent with the observed results has been proposed.
研究了在高氯酸存在下,PCC在DMFH2O介质中400℃氧化l -异亮氨酸和l -缬氨酸。在λ max = 354nm处用分光光度法测定了反应动力学。该反应对PCC、[H +]和[底物]均有单位依赖性。观察了不同氨基酸的Michaelis-Menten型动力学。研究了不同温度[25、30、35、40、45,500℃]下的反应,并计算了活化参数。研究了介质介电常数对速率的影响。提出了一种与观测结果一致的机理。
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引用次数: 0
Synyhesis of Novel Carbazole Based Diol Monomer and Its Photoconducting Polyurethane with Toluene Diisocyanate 新型咔唑基二醇单体与甲苯二异氰酸酯的合成及其光导电聚氨酯
Pub Date : 2017-02-01 DOI: 10.9790/5736-1001024346
D. Mukhopadhyay
The novel carbazole based diol monomer has been synthesized by the reaction of N-ethyl carbazole3, 6-dicarboxylic acid with propene oxide in the solvent medium of DMF. The novel polyurethane has been synthesized by the reaction of diol monomer with toluene diisocyanate in toluene. The monomer and the polymer have been characterized by IR, UV and NMR spectroscopy. The novel polyurethane has good photoconducting properties. The polymer can be doped with TNF or crystal violet and can be studied dark conductivity and photoconductivity under illumination of different voltages and different intensities. Moveover the polymer can be used to prepare polyurethane foam.
在DMF溶剂介质中,以n -乙基咔唑3,6 -二羧酸与环氧丙烯反应合成了新型咔唑基二醇单体。采用二元醇单体与甲苯二异氰酸酯在甲苯中反应合成了新型聚氨酯。用红外光谱、紫外光谱和核磁共振光谱对单体和聚合物进行了表征。该新型聚氨酯具有良好的光导电性能。聚合物可掺杂TNF或结晶紫,可在不同电压、不同强度的光照下研究暗电导率和光电导率。此外,该聚合物可用于制备聚氨酯泡沫。
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引用次数: 1
Synthesis and Characterization of Surface Modified Cellulose Nanofibers from Banana Peel 香蕉皮表面改性纤维素纳米纤维的合成与表征
Pub Date : 2017-02-01 DOI: 10.9790/5736-1001021519
V. N. Krishnan, A. Ramesh
Cellulose nanofibers were separated from banana peel by pretreatment, chemical treatment, mechanical treatment and disintegration methods like sonication, cryo crushing and dissolution. Further, cellulose nanofibers were treated with acetic acid and acetic anhydride in presence of pyridine. The obtained cellulose fibers was characterized by Fourier Transformation Infrared Spectroscopy (FT-IR) and confirm the presence of OH, C-H bond and C-O-C groups in the synthesized Banana Peel Cellulose Nanofibers (BCNF) and presence of OH, C-H, C-O-C and CH3CO in the Acetylated Banana Peel Cellulose Nanofibers (Acetylated BCNF). The Size of BCNF and Acetylated BCNF were investigated by Field Emission Scanning Electron Microscope (FESEM) and Transmission Electron Microscopy (TEM). The synthesized BCNF and Acetylated BCNF investigated by FESEM and TEM was around 90 nm to 150 nm and 30 nm to 60 nm respectively. X-Ray Diffraction (XRD) Analysis was carried out for the BCNF and Acetylated BCNF. XRD result shows that synthesized BCNF and Acetylated BCNF were partially amorphous. The structural morphology was confirmed with the Atomic Force Microscopy (AFM). The Acetylated BCNF were successfully utilized in the preparation of membrane for water purification.
通过预处理、化学处理、机械处理以及超声波、冷冻破碎、溶解等崩解方法,从香蕉皮中分离出纤维素纳米纤维。此外,纤维素纳米纤维在吡啶存在下用乙酸和乙酸酐处理。利用傅里叶变换红外光谱(FT-IR)对合成的纤维素纤维进行了表征,证实了合成的香蕉皮纤维素纳米纤维(BCNF)中存在OH、C-H键和C-O-C基团,乙酰化香蕉皮纤维素纳米纤维(乙酰化BCNF)中存在OH、C-H、C-O-C和CH3CO。采用场发射扫描电镜(FESEM)和透射电镜(TEM)研究了BCNF和乙酰化BCNF的尺寸。用FESEM和TEM研究合成的BCNF和乙酰化BCNF的波长分别为90 ~ 150 nm和30 ~ 60 nm。对BCNF和乙酰化BCNF进行了x射线衍射(XRD)分析。XRD结果表明,合成的BCNF和乙酰化的BCNF部分呈非晶态。用原子力显微镜(AFM)证实了结构形态。成功地将乙酰化BCNF用于水净化膜的制备。
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引用次数: 3
Equilibrium Studies and Kinetics Mechanism for the Removal of Congo red by Passiflora Foetida Activated Carbon–Mno2- Nano Composite 西番莲活性炭-二氧化锰-纳米复合材料去除刚果红的平衡及动力学机理研究
Pub Date : 2017-01-01 DOI: 10.9790/5736-1001020814
M. Sathya, P. Kumar, M. Santhi
This paper presents the feasibility of removal of Basic dye (Congo Red) from aqueous solutions by using a low cost PAC-MnO2-NC. Batch adsorption experiments were carried out as a function of pH, contact time, initial concentration of the adsorbate, adsorbent dosage and temperature. Pseudo first order, Pseudo second order, intra-particle diffusion model and Elovich kinetic models were studied. Thermodynamic parameters such as ∆H ,̊ ∆S ̊, and ∆G ̊ were also calculated.
本文介绍了低成本PAC-MnO2-NC脱除碱性染料(刚果红)的可行性。以pH、接触时间、吸附剂初始浓度、吸附剂投加量和温度为变量,进行了批量吸附实验。研究了伪一阶、伪二阶、粒子内扩散模型和Elovich动力学模型。同时计算了∆H、∆S、∆G等热力学参数。
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引用次数: 0
Study of the Sediments Metallic Contamination in Oum Er-Rbia Estuary 欧姆河河口沉积物金属污染研究
Pub Date : 2017-01-01 DOI: 10.9790/5736-1001016775
Y. Asfers, H. Taouil, H. Hanaf, S. Elanz, S. Ahmed, M. Aboulouafa
1 Laboratoire de Synthèse Organique et Procédés d`Extraction, Université Ibn Tofail. Département de Chimie, B.P. 133, 14000 Kenitra, Maroc 2 Laboratoire de Physico-Chimie des Matériaux et Environnement. Université Abdelmalek Essaâdi, Faculté des Sciences, B.P. 2121, Tétouan, Maroc. 3 Laboratoire de Synthèse Organique et Procédés d`Extraction, Département de Chimie, Faculté des sciences, Université Ibn Tofail, Kenitra, Maroc * Corresponding author: Email: hamidsup@yahoo.fr
伊本·托费尔大学有机合成和提取过程实验室。化学系,B.P. 133, 14000 Kenitra,摩洛哥2材料物理化学与环境实验室。Abdelmalek essaadi大学,理学院,B.P. 2121, tetouan,摩洛哥。3有机合成和提取过程实验室,Ibn Tofail大学理学院化学系,Kenitra,摩洛哥*通讯作者:电子邮件:hamidsup@yahoo.fr
{"title":"Study of the Sediments Metallic Contamination in Oum Er-Rbia Estuary","authors":"Y. Asfers, H. Taouil, H. Hanaf, S. Elanz, S. Ahmed, M. Aboulouafa","doi":"10.9790/5736-1001016775","DOIUrl":"https://doi.org/10.9790/5736-1001016775","url":null,"abstract":"1 Laboratoire de Synthèse Organique et Procédés d`Extraction, Université Ibn Tofail. Département de Chimie, B.P. 133, 14000 Kenitra, Maroc 2 Laboratoire de Physico-Chimie des Matériaux et Environnement. Université Abdelmalek Essaâdi, Faculté des Sciences, B.P. 2121, Tétouan, Maroc. 3 Laboratoire de Synthèse Organique et Procédés d`Extraction, Département de Chimie, Faculté des sciences, Université Ibn Tofail, Kenitra, Maroc * Corresponding author: Email: hamidsup@yahoo.fr","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90870325","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}
引用次数: 4
Synthesis, Characterization, Antibacterial and DNA Binding Studies of Mn (II) Complex of 3-(2-(2-Hydroxy-3- Methoxybenzylidene) Hydrazinyl) Quinoxalin-(1H)-One 3-(2-(2-羟基-3-甲氧基苄基)肼基)喹啉-(1H)- 1 Mn (II)配合物的合成、表征、抗菌及DNA结合研究
Pub Date : 2017-01-01 DOI: 10.9790/5736-1001015962
P. Sukanya, C. V. Reddy
Mn (II) complex of the Schiff base (L), 3-(2-(2-hydroxy-3-methoxybenzylidene) hydrazinyl) quinoxalin-2(1H)-one (VHQO) was prepared and characterized by IR, UV-VIS, Mass, Elemental analysis, TGDTA, magnetic susceptibility and conductivity measurements. VHQO behaved as monobasic, tridentate ligand and formed 1:2 complex (ML2) with the metal ion (M) coordinating through ring nitrogen, azomethine nitrogen and phenolic oxygen. Thermal analysis of the complex indicated the absence of lattice and coordinated water. Based on the spectral and analytical data, octahedral geometry was assigned to the complex. Antibacterial activity of the complex against gram positive bacteria, Bacillus subtillis, Staphylococcus aureus, and gram negative bacteria, Escherichia coli, Proteus vulgaris, Pseudomonas aeroginosa , and Klebsiella pneumonia was studied. The interaction of the complex with Calf Thymus DNA (CT-DNA) was studied by absorption spectroscopy and the intrinsic binding constant was calculated.
制备了席夫碱(L), 3-(2-(2-羟基-3-甲氧基苄基)肼基)喹啉-2(1H)- 1 (VHQO)的Mn (II)配合物,并通过IR、UV-VIS、质量、元素分析、TGDTA、磁化率和电导率测定对其进行了表征。VHQO表现为单碱、三齿配体,与金属离子(M)通过环氮、亚甲基氮和酚氧配位形成1:2配合物(ML2)。配合物的热分析表明没有晶格和配位水。根据光谱和分析数据,将配合物划分为八面体结构。研究了该复合物对革兰氏阳性菌、枯草芽孢杆菌、金黄色葡萄球菌、革兰氏阴性菌、大肠杆菌、普通变形杆菌、铜绿假单胞菌和肺炎克雷伯菌的抑菌活性。利用吸收光谱法研究了该配合物与小牛胸腺DNA (CT-DNA)的相互作用,并计算了其固有结合常数。
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引用次数: 1
Characterization and Typology of Aghien Lagoon waters (SouthEast of Cote d'Ivoire): Potential Resources for Drinking Water Production Aghien泻湖水域的特征和类型(科特迪瓦东南部):饮用水生产的潜在资源
Pub Date : 2017-01-01 DOI: 10.9790/5736-1001020107
L. Amon, L. Konan
The objective of this study was to evaluate the physico-chemical quality of the Aghien lagoon in view of its consomptions as drinking water. The physico-chemical parameters were measured and water sampling were carried out monthly from June 2014 to May 2015 in eleven (11) sites well defined around Aghien lagoon. The parameters were determined using standard methods as defined by the French Association of Standardization (AFNOR). The Seasonal values of temperature, pH, turbidity, electrical conductivity, percentage dissolved oxygen and TSS in Water,falls to the following 26.31-29.76 °C; 6.95-8.03; 16.74-41.05 NTU; 63.15-109.11 μS/Cm; 63.91-100.21% and 8-31.18 mg/L respectively. ANOVA analysis result showed no significant differences (p>0.05) between seasons (dry and rainy) as for temperature, pH and electrical conductivity in all stations. For turbidity, dissolved oxygen and TSS, there was a significant difference between seasons. Seasonal concentrations of nutrient salts in water (mg/L) ranged from 0.01 to 0.14 for NO2 ; 0.48 and 1.93 for NO3 ; 0.06 and 1.90 for PO4 3. Seasonal variations showed a significant difference (p <0.05) for nitrate. The mean values of most parameters studied during both seasons are generally below the standard values recommended by the World Health Organization and SEQ Littoral. The calculated COD / BOD5 ratio showed that the water in the Aghien Lagoon is rich in biodegradable organic matter. The principal component analysis (P.C.A) of the data allowed to define three different types of water of the Aghien lagoon influenced by the seasonal variables. On the whole, the waters of the Aghien Lagoon could be used for the production of drinking water after treatment.
本研究的目的是评价阿吉安泻湖作为饮用水的物理化学质量。2014年6月至2015年5月,在Aghien泻湖周围11个明确的地点进行了物理化学参数测量和每月取样。使用法国标准化协会(AFNOR)定义的标准方法确定参数。水温、pH、浊度、电导率、溶解氧百分比和水中TSS的季节值为26.31 ~ 29.76℃;6.95 - -8.03;16.74 - -41.05南大;63.15 - -109.11μS / Cm;分别为63.91 ~ 100.21%和8 ~ 31.18 mg/L。方差分析结果显示,各监测站的温度、pH和电导率在季节(旱季和雨季)间无显著差异(p>0.05)。浑浊度、溶解氧和TSS在季节间差异显著。水体中营养盐的季节浓度(mg/L)在0.01 ~ 0.14之间;NO3为0.48、1.93;0.06和1.90的PO4 3。硝态氮的季节变化差异显著(p <0.05)。两个季节研究的大多数参数的平均值通常低于世界卫生组织和SEQ沿岸建议的标准值。计算出的COD / BOD5比值表明,Aghien泻湖水体中含有丰富的可生物降解有机物。数据的主成分分析(P.C.A)允许定义受季节变量影响的Aghien泻湖的三种不同类型的水。总的来说,Aghien泻湖的水经过处理后可以用于生产饮用水。
{"title":"Characterization and Typology of Aghien Lagoon waters (SouthEast of Cote d'Ivoire): Potential Resources for Drinking Water Production","authors":"L. Amon, L. Konan","doi":"10.9790/5736-1001020107","DOIUrl":"https://doi.org/10.9790/5736-1001020107","url":null,"abstract":"The objective of this study was to evaluate the physico-chemical quality of the Aghien lagoon in view of its consomptions as drinking water. The physico-chemical parameters were measured and water sampling were carried out monthly from June 2014 to May 2015 in eleven (11) sites well defined around Aghien lagoon. The parameters were determined using standard methods as defined by the French Association of Standardization (AFNOR). The Seasonal values of temperature, pH, turbidity, electrical conductivity, percentage dissolved oxygen and TSS in Water,falls to the following 26.31-29.76 °C; 6.95-8.03; 16.74-41.05 NTU; 63.15-109.11 μS/Cm; 63.91-100.21% and 8-31.18 mg/L respectively. ANOVA analysis result showed no significant differences (p>0.05) between seasons (dry and rainy) as for temperature, pH and electrical conductivity in all stations. For turbidity, dissolved oxygen and TSS, there was a significant difference between seasons. Seasonal concentrations of nutrient salts in water (mg/L) ranged from 0.01 to 0.14 for NO2 ; 0.48 and 1.93 for NO3 ; 0.06 and 1.90 for PO4 3. Seasonal variations showed a significant difference (p <0.05) for nitrate. The mean values of most parameters studied during both seasons are generally below the standard values recommended by the World Health Organization and SEQ Littoral. The calculated COD / BOD5 ratio showed that the water in the Aghien Lagoon is rich in biodegradable organic matter. The principal component analysis (P.C.A) of the data allowed to define three different types of water of the Aghien lagoon influenced by the seasonal variables. On the whole, the waters of the Aghien Lagoon could be used for the production of drinking water after treatment.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75575902","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}
引用次数: 6
期刊
IOSR Journal of Applied Chemistry
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