G. Dobra, S. García‐Granda, A. Negrea, M. Ciopec, N. Nemeș, P. Negrea, N. Duțeanu, Sorin Iliev, L. Cotet, Alina Boiangiu, L. Filipescu
The subject of this paper was the study of antimicrobial capacity of silver loaded on the low temperature activated alumina products and evaluation of these products as decontaminants in the water and waste waters decontamination treatments. The low temperature activated alumina products have been characterized as valuable adsorbents in previous papers. So, by reason the next step to investigate these silver loaded products and finding their performaces as antimicrobial agents was an alluring prospect. For this purpose, a common bacterian inoculus was choosen for experiments, and a penmisive method to measure the rate of inhibition was adopted. Experimental data have shown the dependence of the inhibition rate on the following parameters concerning the adsorbent properties: the thermal treatments, particle size dimension of adsorbent (low temperature activated alumina products), concentration of siver adsorbed on particle surface and density of bioreactive centers, representing the number of particles on unit volume of the liquid containing the bacterial cells. Also, the experiments lay out that the aluminum hydroxide calcined at 300 and 400ºC exibits the largest silver adsorbed concentration and the highest inhibition rate (close to 100 %). Little dependence of inhibition rate on pH, in the interval 5.0 � 8.0, was observed. For application of depolluting agent in diferent technological processes, it is necesary to measure the minimum inhibitory concentration in therms of g of silver loaded on the low temperature activated alumina /L.
{"title":"Silver Adsorption on the Low Temperature Activated Alumina Grades. II. Antimicrobial Activity of the Silver Adsorbed on the Alumina Surface","authors":"G. Dobra, S. García‐Granda, A. Negrea, M. Ciopec, N. Nemeș, P. Negrea, N. Duțeanu, Sorin Iliev, L. Cotet, Alina Boiangiu, L. Filipescu","doi":"10.37358/rc.22.3.8531","DOIUrl":"https://doi.org/10.37358/rc.22.3.8531","url":null,"abstract":"\u0000The subject of this paper was the study of antimicrobial capacity of silver loaded on the low temperature activated alumina products and evaluation of these products as decontaminants in the water and waste waters decontamination treatments. The low temperature activated alumina products have been characterized as valuable adsorbents in previous papers. So, by reason the next step to investigate these silver loaded products and finding their performaces as antimicrobial agents was an alluring prospect. For this purpose, a common bacterian inoculus was choosen for experiments, and a penmisive method to measure the rate of inhibition was adopted. Experimental data have shown the dependence of the inhibition rate on the following parameters concerning the adsorbent properties: the thermal treatments, particle size dimension of adsorbent (low temperature activated alumina products), concentration of siver adsorbed on particle surface and density of bioreactive centers, representing the number of particles on unit volume of the liquid containing the bacterial cells. Also, the experiments lay out that the aluminum hydroxide calcined at 300 and 400ºC exibits the largest silver adsorbed concentration and the highest inhibition rate (close to 100 %). Little dependence of inhibition rate on pH, in the interval 5.0 � 8.0, was observed. For application of depolluting agent in diferent technological processes, it is necesary to measure the minimum inhibitory concentration in therms of g of silver loaded on the low temperature activated alumina /L.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"45 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72490206","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}
The adsorption properties of D113 cation exchange resins on Zn2+ were researched systematically using the traditional batch method. Under different initial Zn2+ concentrations, reaction times, and temperatures, the adsorption efficiency and capacity were measured respectively. In addition, the adsorption equilibrium of D113 resin for Zn2+ obeyed the Langmuir adsorption isotherm model well; the adsorption process agreed with pseudo second-order kinetics model, and was dominated by chemisorption; ΔH＞0 and ΔG＞0 at different temperatures indicated the adsorption was a spontaneous endothermic process in nature. Finally, SEM and FT-IR were properly used to characterize the resins.
{"title":"Study on the Adsorption Properties of D113 Cation Exchange Resin for Zn2+","authors":"Ying Wang, Zhiqing Lai","doi":"10.37358/rc.22.3.8538","DOIUrl":"https://doi.org/10.37358/rc.22.3.8538","url":null,"abstract":"\u0000The adsorption properties of D113 cation exchange resins on Zn2+ were researched systematically using the traditional batch method. Under different initial Zn2+ concentrations, reaction times, and temperatures, the adsorption efficiency and capacity were measured respectively. In addition, the adsorption equilibrium of D113 resin for Zn2+ obeyed the Langmuir adsorption isotherm model well; the adsorption process agreed with pseudo second-order kinetics model, and was dominated by chemisorption; ΔH＞0 and ΔG＞0 at different temperatures indicated the adsorption was a spontaneous endothermic process in nature. Finally, SEM and FT-IR were properly used to characterize the resins.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80624550","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}
The actual problems related with the depletion of fossil resources and the accentuated increase of global warming requires rapid shift to renewable and eco-friendly alternatives. Biomass forestry residues are valuable candidates that can be used as sustainable resources. Torrefaction is a mild thermal treatment that can convert biomass into value-added liquid and solid products. Here we performed torrefaction at 250 �C of needles, cones and bark from spruce and pine, as representative coniferous species in Romanian Carpathians. The elemental analysis of solid materials was performed and the calculated O/C and H/C atomic ratios showed that torrefaction placed the solid materials in the region of coals, close to the origin of the Van Krevelen diagram. The calorific values were improved, leading to higher energy density. The energy yield was close to the unit, indicating that torrefaction is a highly efficient process. The liquid products had complex composition, with compounds coming from the compositional and structural changes in the forestry residues. Terpenes are the dominating compounds from volatile extractives. Furans, from which furfural and 5-methylfurfural were the main compounds produced from degradation of hemicelluloses, while phenol derivatives were produced from lignin. Exploratory data analysis revealed diferences between samples from spruce and pine but also between needles, cones and bark.
{"title":"Torrefaction Process of Needles, Cones and Bark of Spruce (Picea Abies (L.) Karst) and Pine (Pinus Sylvestris L.)","authors":"E. Butnaru, M. Brebu","doi":"10.37358/rc.22.3.8532","DOIUrl":"https://doi.org/10.37358/rc.22.3.8532","url":null,"abstract":"\u0000The actual problems related with the depletion of fossil resources and the accentuated increase of global warming requires rapid shift to renewable and eco-friendly alternatives. Biomass forestry residues are valuable candidates that can be used as sustainable resources. Torrefaction is a mild thermal treatment that can convert biomass into value-added liquid and solid products. Here we performed torrefaction at 250 �C of needles, cones and bark from spruce and pine, as representative coniferous species in Romanian Carpathians. The elemental analysis of solid materials was performed and the calculated O/C and H/C atomic ratios showed that torrefaction placed the solid materials in the region of coals, close to the origin of the Van Krevelen diagram. The calorific values were improved, leading to higher energy density. The energy yield was close to the unit, indicating that torrefaction is a highly efficient process. The liquid products had complex composition, with compounds coming from the compositional and structural changes in the forestry residues. Terpenes are the dominating compounds from volatile extractives. Furans, from which furfural and 5-methylfurfural were the main compounds produced from degradation of hemicelluloses, while phenol derivatives were produced from lignin. Exploratory data analysis revealed diferences between samples from spruce and pine but also between needles, cones and bark.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84618121","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}
Endometriosis is the chronic disease, in which the glandular and stromal-like endometrium grows outside the uterine cavity, Endometriosis is inflammatory and estrogen-dependent that affects 6-10% of women during their reproductive years and up to 50% of women receiving fertility treatment. The purpose of this study was to determine the correlation between the degree of pain with estradiol hormone levels, interleukin-1β (IL-1β) levels and Nitrite Oxide (NO) in the blood serum of patients with endometriosis. This type of research is an observational analytic with a cross sectional comparative study design in which the dependent and independent variables are obtained simultaneously. The research was conducted in type B and C hospitals. To take blood serum samples for endometriosis patients and the Biomedical Laboratory of FK Unand to check levels of estradiol hormone, levels of Interleukin-1β (IL-1β) and NO. The study was conducted in January - November 2020. The population was all patients who doing examination at the obstetrics gynecology department of the hospital. Samples were taken consecutively that met the inclusion and exclusion criteria with a total sample of 40 people. Data analysis using analyzed by univariate, bivariate and multivariate with chi-square test. The research results were obtained The mean age of endometriosis patients was 38.85 years, the mean pain degree of patients and the distribution of levels of estradiol, interleukin, 1β (IL-1β) and Nitric oxide. The results of the bivariate analysis showed that there were differences degree of pain with each Estradiol level, interleukin, 1β (IL-1β) as well as nitric oxide. The results of the multivariate analysis showed that there was a difference in the degree of pain with the three Estradiol levels. interleukin, 1β (IL-1β) and nitric oxide in the blood serum of people with endometriosis (P = 0,000 then p [α (0.05). From the research results it can be concluded that there are the relationship between degree of pain and level Estradiol, interleukin, 1β (IL-1β) and nitric oxide in the blood serum of people with endometriosis.
{"title":"The Correlation Between the Degree of Pain with Estradiol Hormone Levels, Interleukin 1β (il-1β) Levels and Nitrite Oxide in Blood Serum of Endometriosis Patients","authors":"Lidya Metri, A. Afriwardi","doi":"10.37358/rc.22.3.8537","DOIUrl":"https://doi.org/10.37358/rc.22.3.8537","url":null,"abstract":"\u0000Endometriosis is the chronic disease, in which the glandular and stromal-like endometrium grows outside the uterine cavity, Endometriosis is inflammatory and estrogen-dependent that affects 6-10% of women during their reproductive years and up to 50% of women receiving fertility treatment. The purpose of this study was to determine the correlation between the degree of pain with estradiol hormone levels, interleukin-1β (IL-1β) levels and Nitrite Oxide (NO) in the blood serum of patients with endometriosis. This type of research is an observational analytic with a cross sectional comparative study design in which the dependent and independent variables are obtained simultaneously. The research was conducted in type B and C hospitals. To take blood serum samples for endometriosis patients and the Biomedical Laboratory of FK Unand to check levels of estradiol hormone, levels of Interleukin-1β (IL-1β) and NO. The study was conducted in January - November 2020. The population was all patients who doing examination at the obstetrics gynecology department of the hospital. Samples were taken consecutively that met the inclusion and exclusion criteria with a total sample of 40 people. Data analysis using analyzed by univariate, bivariate and multivariate with chi-square test. The research results were obtained The mean age of endometriosis patients was 38.85 years, the mean pain degree of patients and the distribution of levels of estradiol, interleukin, 1β (IL-1β) and Nitric oxide. The results of the bivariate analysis showed that there were differences degree of pain with each Estradiol level, interleukin, 1β (IL-1β) as well as nitric oxide. The results of the multivariate analysis showed that there was a difference in the degree of pain with the three Estradiol levels. interleukin, 1β (IL-1β) and nitric oxide in the blood serum of people with endometriosis (P = 0,000 then p [α (0.05). From the research results it can be concluded that there are the relationship between degree of pain and level Estradiol, interleukin, 1β (IL-1β) and nitric oxide in the blood serum of people with endometriosis.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76296651","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}
The aim of this article is the presentation of new user mass spectral libraries created based on unambiguous assigning of the mass spectra of the tetraethoxysilane (TEOS) oligomers and transesters obtained in the sol-gel process. Gas-chromatography coupled with mass spectrometry (GC-MS) was used to unambiguous identification the TEOS oligomers and transesters obtained in the hydrolysis, condensation and transesterification, reactions of tetraethoxysilane in parental solvent (EtOH) and nonparental solvents (MeOH and n-PrOH). The author�s procedure for the interpretation of mass spectra of silicon alkoxides was applied for TEOS, TEOS dimer, methoxy-transesters, and TEOS cyclic tetramer. GC and MS arguments for unambiguous assigning of TEOS oligomers and transesters in the sol-gel process were presented. Experimental B/E and B/E(1-E)1/2 linked scans, accurate mass at high resolution and M+1, M+2 isotopic effects, applied in previous works, were used as MS arguments. The NBS mass spectral library run under the RSX-11-PLUS operating system was used to create new mass spectral libraries. In this article are presented three user mass spectral libraries codified: TRANSME0 for methoxy-transesters, PROPOXY1 for propoxy-transesters in the histogram plot and tabular format and ICECHIM6 (first 12 entries in histogram plot format) for TEOS oligomers in the parental solvent.
{"title":"TEOS Oligomers and Transesters Identified by GC-MS in the sol-gel Process. Operational Mass Spectral Libraries","authors":"V. Bădescu","doi":"10.37358/rc.22.3.8530","DOIUrl":"https://doi.org/10.37358/rc.22.3.8530","url":null,"abstract":"\u0000The aim of this article is the presentation of new user mass spectral libraries created based on unambiguous assigning of the mass spectra of the tetraethoxysilane (TEOS) oligomers and transesters obtained in the sol-gel process. Gas-chromatography coupled with mass spectrometry (GC-MS) was used to unambiguous identification the TEOS oligomers and transesters obtained in the hydrolysis, condensation and transesterification, reactions of tetraethoxysilane in parental solvent (EtOH) and nonparental solvents (MeOH and n-PrOH). The author�s procedure for the interpretation of mass spectra of silicon alkoxides was applied for TEOS, TEOS dimer, methoxy-transesters, and TEOS cyclic tetramer. GC and MS arguments for unambiguous assigning of TEOS oligomers and transesters in the sol-gel process were presented. Experimental B/E and B/E(1-E)1/2 linked scans, accurate mass at high resolution and M+1, M+2 isotopic effects, applied in previous works, were used as MS arguments. The NBS mass spectral library run under the RSX-11-PLUS operating system was used to create new mass spectral libraries. In this article are presented three user mass spectral libraries codified: TRANSME0 for methoxy-transesters, PROPOXY1 for propoxy-transesters in the histogram plot and tabular format and ICECHIM6 (first 12 entries in histogram plot format) for TEOS oligomers in the parental solvent.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80349124","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}
The experimental research of ceramic coatings on engine components, as well as the evaluation of their performance, is discussed in this work. Engine efficiency, pollution, and combustion characteristics have also been studied in relation to the ceramic coatings on engine components. Furthermore, several ceramic coating materials and coating processes have been thoroughly studied. For a better understanding of the relevance of the ceramic coating, experimental findings of ceramic coated and non-coated engine components were compared. A few issues in emissions and engine performance have also been identified as areas where additional research is needed. The use of optimization techniques in ceramic coating on engines, as well as analysis of variance (ANOVA) to understand the major parameters impacting engine performance, has been explored.
{"title":"Review of Ceramics Coating on the Engine Components","authors":"K. Anandavelu, A. Mahabubadsha","doi":"10.37358/rc.22.3.8533","DOIUrl":"https://doi.org/10.37358/rc.22.3.8533","url":null,"abstract":"\u0000The experimental research of ceramic coatings on engine components, as well as the evaluation of their performance, is discussed in this work. Engine efficiency, pollution, and combustion characteristics have also been studied in relation to the ceramic coatings on engine components. Furthermore, several ceramic coating materials and coating processes have been thoroughly studied. For a better understanding of the relevance of the ceramic coating, experimental findings of ceramic coated and non-coated engine components were compared. A few issues in emissions and engine performance have also been identified as areas where additional research is needed. The use of optimization techniques in ceramic coating on engines, as well as analysis of variance (ANOVA) to understand the major parameters impacting engine performance, has been explored.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89130636","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}
Copper electro dissolution in H3PO4 acid is examined in solution containing different concentration of Hibiscus extract (Hibiscuss abdariffa). Potential of anode limiting current relation were computed and estimate of gently raising Hibiscus extract concentration (500-2000 ppm), The results reveal that Hibiscus extraction as a natural product has strong retardation behavior ranging from 24.5 � 42.1 % and the thermodynamic factors, adsorption isotherm and dimensionless parameters were given. Copper dissolution behavior in Hibiscus extract containing solution was investigated below ordinary convection and rotating cylinder electrode (RCE) as a compulsory convection. The rotating cylinder electrode RCE speed was investigated. The limiting current increases with increasing rotation, which indicates that the anodic corrosion is a diffusion-controlled process. The limiting current were reduced with raising extract plant concentration and raise with amplifying temperature from 293 -313 K). The activation energy values established which reaction rate was controlled via diffusion. Hibiscus extract adsorption follow Flory Huggins and kinetic thermodynamic models. The result at several circumstance was commanded via dimensionless correlations Sherwood (Sh), Schmidt (Sc) and Reynolds (Re) numbers.
{"title":"The Hibiscus extract Potential in Inhibiting Anodic Dissolution of Copper","authors":"F. Abouzeid, Sultanah Alshammery","doi":"10.37358/rc.22.3.8536","DOIUrl":"https://doi.org/10.37358/rc.22.3.8536","url":null,"abstract":"\u0000Copper electro dissolution in H3PO4 acid is examined in solution containing different concentration of Hibiscus extract (Hibiscuss abdariffa). Potential of anode limiting current relation were computed and estimate of gently raising Hibiscus extract concentration (500-2000 ppm), The results reveal that Hibiscus extraction as a natural product has strong retardation behavior ranging from 24.5 � 42.1 % and the thermodynamic factors, adsorption isotherm and dimensionless parameters were given. Copper dissolution behavior in Hibiscus extract containing solution was investigated below ordinary convection and rotating cylinder electrode (RCE) as a compulsory convection. The rotating cylinder electrode RCE speed was investigated. The limiting current increases with increasing rotation, which indicates that the anodic corrosion is a diffusion-controlled process. The limiting current were reduced with raising extract plant concentration and raise with amplifying temperature from 293 -313 K). The activation energy values established which reaction rate was controlled via diffusion. Hibiscus extract adsorption follow Flory Huggins and kinetic thermodynamic models. The result at several circumstance was commanded via dimensionless correlations Sherwood (Sh), Schmidt (Sc) and Reynolds (Re) numbers.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79349163","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}
The aim of this study was to investigated the chemical composition of essential oils from different organs (fruits, leaves, and stems) and determined the heavy metal and nutrient elements in leaves of Xanthium strumarium cultivated in culture conditions. The essential oils of the plant parts dried in the shade isolated by hydrodistillation and the essential oils extracted by using Clevenger apparatus analyzed by GC-MS. Nutrients and heavy metals (aluminum, cadmium, cobalt, chromium, nickel, phosphorus, potassium, calcium, sulfur, iron, copper, zinc, manganese, boron, and sodium) in the leaves using an iCAP-Qc ICP-MS spectrometer detected. While the main components in the fruit essential oil were 6-epi-shyobunol (17.13%), α-bisabolene epoxide (12.34%), α-cadinol (10.28 %), and tau-cadinol (10.06%),the main components of leaves essential oil were recorded as α-cadinol (12.40%) and caryophyllene oxide (11.88%), while borneol (9.24%), isoaromadendrene epoxide (8.74%), cubedol (8.62%), hexahydrofarnesyl acetone (8.06%), tau-cadinol (6.79%), 2,2,6-trimethyl- 1-(3-methylbuta-1,3-dienyl)-7-oxabicyclo[4.1.0]heptan-3-ol (5.01%), and α-bisabolene epoxide (5.00%) were recorded abundantly. Duraldehyde formed 79.92% of the stem essential oil. Other important components in this essential oil were mesitol with 8.89% and mesitioic acid with 4.49%. Among the three macro minerals (Ca, K and P) in the dried leaves of X. strumarium evaluated in the study, K had the highest value. The microelement content of the leaves varied between 0.305�0.002(Zn)-3.235�0.062 (Fe) ppm. The mineral content of the plant, whose fresh leaves are consumed as a vegetable by the local people, was found to be low. Generally, X. strumarium is a rich source of essential oil components. In this study, fruit essential oil was for the first time. The findings from this study can be useful for future studies.
{"title":"The Evaluation of Essential Oils Compositions, Mineral and Heavy Metal Content of Xanthium strumarium L. Grown in Cultural Conditions","authors":"B. C. Şenkal, T. Uskutoğlu","doi":"10.37358/rc.22.3.8535","DOIUrl":"https://doi.org/10.37358/rc.22.3.8535","url":null,"abstract":"\u0000The aim of this study was to investigated the chemical composition of essential oils from different organs (fruits, leaves, and stems) and determined the heavy metal and nutrient elements in leaves of Xanthium strumarium cultivated in culture conditions. The essential oils of the plant parts dried in the shade isolated by hydrodistillation and the essential oils extracted by using Clevenger apparatus analyzed by GC-MS. Nutrients and heavy metals (aluminum, cadmium, cobalt, chromium, nickel, phosphorus, potassium, calcium, sulfur, iron, copper, zinc, manganese, boron, and sodium) in the leaves using an iCAP-Qc ICP-MS spectrometer detected. While the main components in the fruit essential oil were 6-epi-shyobunol (17.13%), α-bisabolene epoxide (12.34%), α-cadinol (10.28 %), and tau-cadinol (10.06%),the main components of leaves essential oil were recorded as α-cadinol (12.40%) and caryophyllene oxide (11.88%), while borneol (9.24%), isoaromadendrene epoxide (8.74%), cubedol (8.62%), hexahydrofarnesyl acetone (8.06%), tau-cadinol (6.79%), 2,2,6-trimethyl- 1-(3-methylbuta-1,3-dienyl)-7-oxabicyclo[4.1.0]heptan-3-ol (5.01%), and α-bisabolene epoxide (5.00%) were recorded abundantly. Duraldehyde formed 79.92% of the stem essential oil. Other important components in this essential oil were mesitol with 8.89% and mesitioic acid with 4.49%. Among the three macro minerals (Ca, K and P) in the dried leaves of X. strumarium evaluated in the study, K had the highest value. The microelement content of the leaves varied between 0.305�0.002(Zn)-3.235�0.062 (Fe) ppm. The mineral content of the plant, whose fresh leaves are consumed as a vegetable by the local people, was found to be low. Generally, X. strumarium is a rich source of essential oil components. In this study, fruit essential oil was for the first time. The findings from this study can be useful for future studies.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85257276","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}
Arulmozhi Rajendran, Manimekalai Balasubramanian, M. Krishnan, S. Subramanian
Worldwide air pollution is an important source of morbidity and mortality. These days air contamination is an unsolvable issue and it directly affects the human prosperity and economy of a country. When compared to natural sources, anthropogenic activities are the major participant in the ambient air pollution problem. The present study aims to determine the Particulate Matter concentration during the Diwali celebration period in the Alandur area, Chennai district, Tamil Nadu, India. In this study area, alarmingly high air pollution was noticed in the year 2017 during Diwali Day. To validate the status of current situation in the study area the research was done in 2021. An ambient air quality sensor was used to monitor PM1, PM2.5 and PM10 particulate matter concentration and particles count. It was found that the maximum concentration was 1498 �g/m3 for PM10. It was identified that particles of size [1�m were more in the event of fireworks. Particles with diameter [2.5�m may induce an adverse health effect than larger fine particles. From this study, it is identified that, a complex mixture of transient particles released from fireworks and some of the elements were identified from the collected particulate matter samples such as C, N, O, Na, Al, S, Cl, K, Sr, Ba, Mg, Mn, Sb, Fe, Ca and As. The study found that trace elements available in the fine particles are inhalable and may pose ill effects on human health.
{"title":"Real-Time Monitoring of Particulate Matter During Diwali Festival in Chennai, India","authors":"Arulmozhi Rajendran, Manimekalai Balasubramanian, M. Krishnan, S. Subramanian","doi":"10.37358/rc.22.3.8534","DOIUrl":"https://doi.org/10.37358/rc.22.3.8534","url":null,"abstract":"\u0000Worldwide air pollution is an important source of morbidity and mortality. These days air contamination is an unsolvable issue and it directly affects the human prosperity and economy of a country. When compared to natural sources, anthropogenic activities are the major participant in the ambient air pollution problem. The present study aims to determine the Particulate Matter concentration during the Diwali celebration period in the Alandur area, Chennai district, Tamil Nadu, India. In this study area, alarmingly high air pollution was noticed in the year 2017 during Diwali Day. To validate the status of current situation in the study area the research was done in 2021. An ambient air quality sensor was used to monitor PM1, PM2.5 and PM10 particulate matter concentration and particles count. It was found that the maximum concentration was 1498 �g/m3 for PM10. It was identified that particles of size [1�m were more in the event of fireworks. Particles with diameter [2.5�m may induce an adverse health effect than larger fine particles. From this study, it is identified that, a complex mixture of transient particles released from fireworks and some of the elements were identified from the collected particulate matter samples such as C, N, O, Na, Al, S, Cl, K, Sr, Ba, Mg, Mn, Sb, Fe, Ca and As. The study found that trace elements available in the fine particles are inhalable and may pose ill effects on human health.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87766383","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：