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Rapid Determination of Mercury in Contaminated Soil and Plant Samples Using Portable Mercury Direct Analyzer without Sample Preparation, a Comparative Study

文献类型： 外文期刊

作者： Kelly, John G. 2 ; Han, Fengxiang X. 1 ; Su, Yi 2 ; Xia, Yunjun 2 ; Philips, Valerie 2 ; Shi, Zhiqi 3 ; Monts, David L 1 ;

作者机构： 1.Jackson State Univ, Dept Chem & Biochem, Jackson, MS 39217 USA

2.Mississippi State Univ, Inst Clean Energy Technol, Starkville, MS 39759 USA

3.Jiangsu Acad Agr Sci, Inst Food Qual Safety & Monitoring, Nanjing 210014, Jiangsu, Peoples R China

4.Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA

5.Virginia Polytech Inst & State Univ, Dept Crop & Soil Environm Sci, Blacksburg, VA 24061 USA

关键词： mercury;analysis;contaminated soils;inductively coupled plasma atomic emission spectrometry;cold vapor atomic absorption

期刊名称：WATER AIR AND SOIL POLLUTION （ 影响因子：2.52； 五年影响因子：2.574 ）

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收录情况： SCI

摘要： The objective of this study was to determine the efficiency of a portable total mercury analyzer (OhioLumex RA-915+) in comparison with traditional analytical methods, such as inductively coupled plasma atomic emission spectrometry and cold vapor atomic absorption. The quick mercury analytical procedure with the direct mercury analyzer without sample pretreatment (such as sample digestion) was optimized for a variety of environmental samples, including contaminated soil and plant samples. The efficiency was evaluated using practical parameters, such as time required for analysis, sample amount, mercury species, accuracy, and precision/reproducibil-ity, as well as using statistical analysis. Our results demonstrate that these three instrumental methods yielded similar mercury concentration values and statistical data, while the mercury direct analyzer had the advantages of not requiring for sample digestion and only requiring a small quantity of samples for distribution of mercury in a single root, a single root hair, and sub-regions of a single leaf of plants. These factors are used to justify use of the portable direct mercury analyzer under field conditions and validation of the results.

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[1]Mercury toxicity, molecular response and tolerance in higher plants. Yang, Zhi Min,Chen, Jian. 2012

[2]Enhancement of tolerance of Indian mustard (Brassica juncea) to mercury by carbon monoxide. Meng, De Kun,Yang, Zhi Min,Chen, Jian. 2011

[3]Mercury distribution and speciation in floodplain soils and uptake into native earthworms (Diplocardia spp.). Han, Fengxiang X.,Su, Yi,Xia, Yunjun,Tian, Wushuang,Philips, Valerie,Han, Fengxiang X.,Shi, Zhiqi,Monts, David L.,Gu, Mengmeng,Liang, Yongchao. 2012

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