Hydride generation coupled with thioglycolic acid coated gold nanoparticles as simple and sensitive headspace colorimetric assay for visual detection of Sb(III)
文献类型：期刊论文
| 作者 | Tolessa, Tesfaye; Tan, Zhi-Qiang ; Liu, Jing-Fu
|
| 刊名 | ANALYTICA CHIMICA ACTA
 |
| 出版日期 | 2018-04-03 |
| 卷号 | 1004页码:67-73 |
| 关键词 | Headspace colorimetric assay Gold nanoparticles Chromogenic reaction Hydride generation |
| ISSN号 | 0003-2670 |
| 文献子类 | Article |
| 英文摘要 | Antimony (Sb) is a toxic element which causes different health problems including cardiac problems and lung cancer in humans, and its levels in surface water can be noticeably increased to 100 mg/L typically in the proximity of anthropogenic sources. Thus, besides instrumental techniques, it is of great significance to develop a simple, sensitive and selective analytical method for direct analysis of Sb(III) at trace level without the need of any expensive and/or complicated instrumentations and sample preparation processes. Herein, a simple and sensitive headspace colorimetric assay was developed for the detection of Sb(III) by hydride generation coupled with thioglycolic acid functionalized gold nanoparticles (TGA-AuNPs). Sb(III) in the 30 mL sample solution was converted into its volatile form (SbH3) through hydride generation reaction and headspace extracted into 100 mL chromogenic reagent, which contains methanol as extractant and TGA-AuNPs as nanosensors, leading to aggregation of TGA-AuNPs and therefore a red-to-blue color change. Parameters influencing the chromogenic and hydride generation reactions were optimized. Addition of 300 mu M ethylenediamine tetraacetic acid (EDTA) as masking agent largely suppressed the inferences from mercury and arsenic. The proposed method can tolerate at least 10-fold As(III) and 100-fold other metal ions including Hg(II). The detection limits were 6.0 and 1.2 mu g/L Sb(III) by naked-eye and UV-Vis spectrometer, respectively, which meet the maximum admissible level in drinking water (6 mu g/L) set by the United States Environmental Protection Agency. The feasibility of the proposed method was demonstrated by rapid detection of Sb(III) in river water, lake water, ground water and sea water samples by naked-eye at a spiking level of 6 mg/L Sb(III). (c) 2017 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40960]  |
| 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 | Tolessa, Tesfaye,Tan, Zhi-Qiang,Liu, Jing-Fu. Hydride generation coupled with thioglycolic acid coated gold nanoparticles as simple and sensitive headspace colorimetric assay for visual detection of Sb(III)[J]. ANALYTICA CHIMICA ACTA,2018,1004:67-73. |
| APA | Tolessa, Tesfaye,Tan, Zhi-Qiang,&Liu, Jing-Fu.(2018).Hydride generation coupled with thioglycolic acid coated gold nanoparticles as simple and sensitive headspace colorimetric assay for visual detection of Sb(III).ANALYTICA CHIMICA ACTA,1004,67-73. |
| MLA | Tolessa, Tesfaye,et al."Hydride generation coupled with thioglycolic acid coated gold nanoparticles as simple and sensitive headspace colorimetric assay for visual detection of Sb(III)".ANALYTICA CHIMICA ACTA 1004(2018):67-73. |
入库方式： OAI收割
来源：生态环境研究中心
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