Fluorimetric determination of arsenite and arsenate in water using fluorescein and iodine
文献类型：期刊论文
| 作者 | Yuan, BL; Qu, JH; Lin, QZ |
| 刊名 | INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2002 |
| 卷号 | 82期号:1页码:31-36 |
| 关键词 | fluorimetry 2 ' arsenite arsenate water sample 7 '-dichlorofluoresce |
| 英文摘要 | A rapid, simple and sensitive fluorimetric method has been developed for the determination of inorganic arsenic. The method is based on the competitive reaction of arsenite and 2',7'-dichlorofluoresecin (DCF) as fluoregenic reagent (lambda(ex) = 510 nm, lambda(em) = 528 nm) at pH 6.5-7.5 with iodine (I-2) to cause the increasing fluorescence intensity of the solution. Arsenate and other ions do not react with iodine. After reduction to the trivalent state by using L-cysteine, total arsenic is determined by spectrofluorimetry. Arsenate concentration can be calculated by difference. The calibration graph is linear over the range 4-180 ng/mL arsenite. The linear regression equation is DeltaF = 7.82C + 0.76 and the relative coefficient is 0.9991. The detection limit is 0.6 ng/mL arsenite. The recovery of this method for detecting arsenite is 96-105%. The method has been applied successfully to the determination of arsenite in tap and pool water. |
| 研究领域[WOS] | Chemistry ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:000175968100005 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23929]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yuan, BL,Qu, JH,Lin, QZ. Fluorimetric determination of arsenite and arsenate in water using fluorescein and iodine[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY,2002,82(1):31-36. |
| APA | Yuan, BL,Qu, JH,&Lin, QZ.(2002).Fluorimetric determination of arsenite and arsenate in water using fluorescein and iodine.INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY,82(1),31-36. |
| MLA | Yuan, BL,et al."Fluorimetric determination of arsenite and arsenate in water using fluorescein and iodine".INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY 82.1(2002):31-36. |
入库方式： OAI收割
来源：生态环境研究中心
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