scholarly journals Determination of radionuclide concentration and radiological hazard in soil and water near the uranium tailings reservoir in China

2021 ◽  
Vol 33 (1) ◽  
pp. 174-183
Author(s):  
Yuanyuan Liu ◽  
Weibo Zhou ◽  
Bai Gao ◽  
Zhihong Zheng ◽  
Gongxin Chen ◽  
...  
Keyword(s):  
Radionuclide Concentration ◽  
Radiological Hazard ◽  
Tailings Reservoir ◽  
Uranium Tailings ◽  
Soil And Water

scholarly journals Genus Alga pada Lahan Sawah Organik yang Ditanami Padi Lokal dan Inhibrida di Subak Jatiluwih, Tabanan

2019 ◽  
Vol 9 (2) ◽  
pp. 112
Author(s):  
SAWIDYA FITRIYANI ◽  
I WAYAN DANA ATMAJA ◽  
NI NENGAH SONIARI
Keyword(s):  
Soil Fertility ◽  
Research Method ◽  
Quantitative Method ◽  
Rice Fields ◽  
Most Probable Number ◽  
Water Sampling ◽  
Probable Number ◽  
Organic Rice ◽  
Soil And Water

Algae Genus in Organic Rice Fields Planted with Local and Inhibrida Rice in Subak Jatiluwih, Tabanan. The abundance of microalgae in rice fields, especially microalgae from Cyanophyta division that are capable of fixing nitrogen, is very important helping maintain soil fertility. The aim of this study was to find out the genus of algae in organic rice fields of Subak Jatiluwih, Tabanan. The research was conducted from September 2018 to April 2019. Sampling was done in Subak Jatiluwih. Algae breeding were carried out at Biology and Physics Laboratory, Faculty of Agriculture, Udayana University. This research method uses descriptive quantitative. The implementation of the research included the determination of location, soil and water sampling, identification of algae, and analysis of algae genera. Enrichment algae was carried out using the MPN method, results of the analysis of algae genus were found in 37 genera from 3 divisions i.e Chlorophyta, Cyanophyta and Chrysophyta. Descriptive quantitative method Most Probable Number (MPN) calculation conclude that there are not much different from the Local and Inhibrida rice fields. The maximum population algae of local rice fields is 1.100 cell g-1 and Inhibrida rice fields is >1.100 cell g-1 of land. The minimum population is 3,6 cell g-1 of land in local rice fields, and 9,2 cell g-1 of land in Inhibrida rice fields.

scholarly journals A review: Analytical methods for heavy metals determination in environment and human samples

2019 ◽  
pp. 97-126 ◽  
Author(s):  
Mojtaba Arjomandi ◽  
*Hamid Shirkhanloo
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Human Health ◽  
Human Body ◽  
Analytical Methods ◽  
Review Paper ◽  
Clinical Chemistry ◽  
Daily Lives ◽  
Soil And Water

Heavy metals are vital and necessary in our daily lives. Moreover, if the amounts of heavy metals are more than the acceptable amounts (mentioned by WHO) in soil, water, and air, indeed, they cause a lot of diseases in human bodies. Therefore, monitoring and measuring the amounts of heavy metals that are arduous and difficult are so important. In this review paper, a lot of studies that have been carried out on the determination and quantification of heavy metals in human bodies, soil, and water are considered. Moreover, the effect of toxicity of each heavy metal on human health is assessed. According to WHO, EPA, NIOSH, ACGIH, and clinical chemistry, the determination of heavy metals such as Cd, Pb, Zn, Hg, Cu, Mn is very important in the human body and Environmental matrixes. 

scholarly journals Determination of radionuclide concentrations in cigarette tobacco by using Thallium-doped NaI (TI) scintillate technique

2020 ◽  
Vol 25 (2) ◽  
pp. 81
Author(s):  
Dalia Khawwam Kamil ◽  
, Asma Ahmad Aziz
Keyword(s):  
Health Risk ◽  
Specific Activity ◽  
Annual Effective Dose ◽  
Radiation Risk ◽  
Internal Exposure ◽  
Radiological Hazard ◽  
Hazard Indices ◽  
Cigarette Tobacco ◽  
Radium Equivalent

This study includes the determination of natural and industrial radionuclides concentrations in different samples of cigarette tobacco. The radionuclides are U238, Th332 series and K40, as well as industrial radionuclides of Cs137.Radiation risk coefficients were calculated. The results showed that the specific activity rates of Ra226, Bi207, Ac228, K40, and Cs137 were within the global limit. The radiological hazard radium equivalent Raeq , intake dose (Dɣ), annual effective dose for external and internal exposure (AEDEout and AEDEin), health risk external and internal hazard indices data (Hex and Hin) and gamma risk radiation were all lower than the allowable global limits   http://dx.doi.org/10.25130/tjps.25.2020.033

Gas-Liquid Chromatographic Determination of Bromacil Residues

1980 ◽  
Vol 63 (1) ◽  
pp. 43-46
Author(s):  
Keh-Chuh Ting ◽  
George A Root ◽  
George R Tichelaar
Keyword(s):  
Chromatographic Determination ◽  
Accurate Method ◽  
Gas Chromatograph ◽  
Sample Extraction ◽  
Liquid Chromatographic Determination ◽  
Nitrogen Phosphorus Detector ◽  
Liquid Chromatographic ◽  
Nitrogen Phosphorus ◽  
Soil And Water

Abstract A simple, fast, and accurate method has been developed to determine residues of bromacil (5-bromo-3-sec-butyl-6-methyluracil) herbicide. Following sample extraction, filtration, and concentration, the herbicide is determined using a gas chromatograph equipped with a thermionic nitrogen/phosphorus detector. The method has been used to recover 0.04 ppm bromacil added to citrus, pineapple, soil, and water, and 0.1 ppm bromacil added to alfalfa hay.

Method for Bioassaying Chlorsulfuron in Soil and Water

Weed Science ◽  
1985 ◽  
Vol 33 (3) ◽  
pp. 420-425 ◽  
Author(s):  
Don W. Morishita ◽  
Donald C. Thill ◽  
Duane G. Flom ◽  
Tanaquil C. Campbell ◽  
Gary A. Lee
Keyword(s):  
Zea Mays ◽  
Root Length ◽  
Linear Response ◽  
Primary Root ◽  
Recovery Efficiency ◽  
Soil Extraction ◽  
Bioassay Technique ◽  
Primary Root Length ◽  
Soil And Water

Bioassay techniques were evaluated for the determination of chlorsulfuron {2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] benzenesulfonamide} residues in soil and water. A linear response of corn (Zea maysL.) primary root length to chlorsulfuron concentrations (InX+1) of 0.0 to 16.0 μg/L was observed in the water bioassay. Several soil extraction bioassay methods were attempted and found to be highly variable. A Ca(OH)2soil extraction bioassay technique produced a linear response of primary corn root length to chlorsulfuron concentrations ranging from 0.0 to 64.0 μg/kg. The efficiency of the Ca(OH)2extraction bioassay was determined by the use of14C-chlorsulfuron. Recovery efficiency at 1.0 μg/kg was 74% and averaged 62% at all higher chlorsulfuron concentrations.

Multi-class determination of anthelmintics in soil and water by LC-MS/MS

2013 ◽  
Vol 30 (6) ◽  
pp. 1128-1137 ◽  
Author(s):  
Marivil D. Islam ◽  
Georg Haberhauer ◽  
Alla Kist ◽  
M. Nasir Rathor ◽  
Martin Gerzabek ◽  
...  
Keyword(s):  
Soil And Water

General Method for Determination of Pesticide Residues in Samples of Plant Origin, Soil, and Water. II. Thin Layer Chromatographic Determination

1981 ◽  
Vol 64 (3) ◽  
pp. 743-748 ◽  
Author(s):  
Árpád Ambrus ◽  
Éva Hargitai ◽  
Gabriella Károly ◽  
András Fülöp Ambrus ◽  
János Lantos Ambrus
Keyword(s):  
Thin Layer ◽  
Pesticide Residues ◽  
Unknown Origin ◽  
Chromatographic Determination ◽  
Plant Origin ◽  
Coefficients Of Variation ◽  
Rf Values ◽  
Soil And Water ◽  
General Method

Abstract o-Tolidine plus KI, p-nitrobenzene-diazoniumfluoroborate, bioassay with fungi and enzyme sources, AgNO3 plus UV radiation, and p-dimethyl-aminobenzaldehyde modes of detection have been selected for TLC screening of pesticide residues in extracts of samples of unknown origin. Single solvents were used for the elution. Coefficients of variation of Rf values were studied as a function of Rf and eluants. Indicator compounds were used for controlling the proper conditions of detection. The detectability of 188 pesticide compounds was tested, and the minimum detectable amounts were determined.

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