Colorimetric filtrations of metal chelate precipitations for the quantitative determination of nickel(II) and lead(II)
文献类型：期刊论文
| 作者 | Feng, Liang; Zhang, Yue; Wen, Liying; Chen, Liang; Shen, Zheng; Guan, Yafeng |
| 刊名 | analyst
 |
| 出版日期 | 2011 |
| 卷号 | 136期号:20页码:4197-4203 |
| ISSN号 | 待补充 |
| 产权排序 | 1,1 |
| 通讯作者 | 冯亮 ; 关亚风 |
| 中文摘要 | colorimetric filtrations of metal chelate precipitations for the quantitative determination of nickel(ii) and lead(ii) |
| 英文摘要 | a colorimetric filtration method has been developed for the highly selective and sensitive determination of ni(2+) and pb(2+) ions. determinations of ni(2+) and pb(2+) follow the filtration using nioxime (1,2-cyclohexanedione dioxime) and rhodizonic acid disodium salt, respectively, as colorimetric reagents. different from regular instrumentation techniques, the metal chelate precipitations are continuously pumped into a home-made flow cell at a constant flow rate, and filtered by a cellulose acetate/nitrate membrane. the color changes of the membrane are imaged using a conventional flatbed scanner, and digitized. the special selection of individual channels in the red, green, and blue channels of the images filters the influences of coexisting ions and provides a highly selective detection of ni(2+) and pb(2+) cations. the linear relationship between the colorimetric response of the chosen channel and ni(2+) or pb(2+) concentrations indicates a quantitative detection. the detection limit for pb(2+) is 3 mu m (almost half of the chinese wastewater discharge standard concentration), and is well below the nm level (94 nm) for ni(2+) (a quarter of the who drinking water safe-exposure standard for ni(2+)). the determinations take five to ten minutes. no shelf life issue exists because the chelating indicators react with metal directly without any pre-immobilizations. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, analytical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | atomic-absorption-spectrometry ; solid-phase extraction ; optical-emission-spectrometry ; adsorptive stripping voltammetry ; water samples ; sensor array ; trace amounts ; icp-oes ; optoelectronic nose ; preconcentration |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000295334000017 |
| 公开日期 | 2012-07-09 |
| 源URL | [http://159.226.238.44/handle/321008/115450]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | CAS, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Lab Instrumentat & Analyt Chem, Dalian 116023, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Liang,Zhang, Yue,Wen, Liying,et al. Colorimetric filtrations of metal chelate precipitations for the quantitative determination of nickel(II) and lead(II)[J]. analyst,2011,136(20):4197-4203. |
| APA | Feng, Liang,Zhang, Yue,Wen, Liying,Chen, Liang,Shen, Zheng,&Guan, Yafeng.(2011).Colorimetric filtrations of metal chelate precipitations for the quantitative determination of nickel(II) and lead(II).analyst,136(20),4197-4203. |
| MLA | Feng, Liang,et al."Colorimetric filtrations of metal chelate precipitations for the quantitative determination of nickel(II) and lead(II)".analyst 136.20(2011):4197-4203. |
入库方式： OAI收割
来源：大连化学物理研究所
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