A novel colorimetric method for field arsenic speciation analysis
文献类型：期刊论文
| 作者 | Hu, Shan ; Lu, Jinsuo ; Jing, Chuanyong |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2012 |
| 卷号 | 24期号:7页码:1341－1346 |
| 关键词 | arsenic speciation colorimetric method groundwater field analysis |
| ISSN号 | 1001-0742 |
| 中文摘要 | Accurate on-site determination of arsenic (As) concentration as well as its speciation presents a great environmental challenge especially to developing countries. To meet the need of routine field monitoring, we developed a rapid colorimetric method with a wide dynamic detection range and high precision. The novel application of KMnO4 and CH4N2S as effective As(III) oxidant and As(V) reductant, respectively, in the formation of molybdenum blue complexes enabled the differentiation of As(III) and As(V). The detection limit of the method was 8 mu g/L with a linear range (R-2 = 0.998) of four orders of magnitude in total As concentrations. The As speciation in groundwater samples determined with the colorimetric method in the field were consistent with the results using the high performance liquid chromatography atomic fluorescence spectrometry, as evidenced by a linear correlation in paired analysis with a slope of 0.9990-0.9997 (p < 0.0001, n = 28). The recovery of 96%-116% for total As, 85%-122% for As(III), and 88%-127% for As(V) were achieved for groundwater samples with a total As concentration range 100-800 mu g/L. The colorimetric result showed that 3.61 g/L As(III) existed as the only As species in a real industrial wastewater, which was in good agreement with the HPLC-AFS result of 3.56 g/L As(III). No interference with the color development was observed in the presence of sulfate, phosphate, silicate, humic acid, and heavy metals from complex water matrix. This accurate, sensitive, and easy-to-use method is especially suitable for field As determination. |
| WOS记录号 | WOS:000306581100023 |
| 公开日期 | 2014-11-04 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7781]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Hu, Shan,Lu, Jinsuo,Jing, Chuanyong. A novel colorimetric method for field arsenic speciation analysis[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2012,24(7):1341－1346. |
| APA | Hu, Shan,Lu, Jinsuo,&Jing, Chuanyong.(2012).A novel colorimetric method for field arsenic speciation analysis.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,24(7),1341－1346. |
| MLA | Hu, Shan,et al."A novel colorimetric method for field arsenic speciation analysis".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 24.7(2012):1341－1346. |
入库方式： OAI收割
来源：生态环境研究中心
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