A colorimetric approach for measuring mercuric ions with high selectivity using label-free gold nanoparticles and thiourea
文献类型：期刊论文
| 作者 | Wang, Qianru1,2; Li, Yiran1; Li, Min1; Wen, Congying1; Liu, Rongsheng1; Subhan, Fazle3; Yan, Zifeng1; Zeng, Jingbin1 |
| 刊名 | analytical methods
 |
| 出版日期 | 2015 |
| 卷号 | 7期号:16页码:6837-6841 |
| 英文摘要 | we report a simple colorimetric assay for hg2+ measurements using label-free gold nanoparticles (au nps, 13.0 +/- 1.6 nm) with the aid of thiourea (tu). the addition of tu into au nps resulted in aggregation of au nps with a red-to-blue color change. while in the presence of hg2+, it inhibited the aggregation of au nps induced by tu, resulting in a reverse color change from blue to purple and finally to wine red. these color variations are dependent on the hg2+ concentration and can be utilized for the colorimetric sensing of hg2+. this assay requires only 3 min to reach a naked-eye detection limit of 100 nm, which satisfies the guideline concentration of hg2+ (250 nm) in industrial water regulated by the epa. and the concentration of hg2+ is quantitatively determined using a uv-vis spectrophotometer with a limit of detection (lod) of 40 nm. the response of the assay caused by hg2+ (2 mu m) was 6.0 to 9.1 times higher than those induced by other metal ions (100 mu m), indicating its high specificity towards hg2+. the assay has been applied for the analysis of hg2+ in drinking and lake water samples with recoveries in the range of 98.3-120.0%. |
| WOS标题词 | science & technology ; physical sciences ; life sciences & biomedicine ; technology |
| 类目[WOS] | chemistry, analytical ; food science & technology ; spectroscopy |
| 研究领域[WOS] | chemistry ; food science & technology ; spectroscopy |
| 关键词[WOS] | hg2+ detection ; aqueous-media ; mercury(ii) ; sensor ; antiaggregation ; spectrometry ; aggregation ; acid |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000359360400049 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/146442]  |
| 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 | 1.China Univ Petr East China, State Key Lab Heavy Oil Proc, Coll Sci, Qingdao 266555, Peoples R China 2.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Abdul Wali Khan Univ, Dept Chem, Mardan Kpk, Pakistan |
| 推荐引用方式 GB/T 7714 | Wang, Qianru,Li, Yiran,Li, Min,et al. A colorimetric approach for measuring mercuric ions with high selectivity using label-free gold nanoparticles and thiourea[J]. analytical methods,2015,7(16):6837-6841. |
| APA | Wang, Qianru.,Li, Yiran.,Li, Min.,Wen, Congying.,Liu, Rongsheng.,...&Zeng, Jingbin.(2015).A colorimetric approach for measuring mercuric ions with high selectivity using label-free gold nanoparticles and thiourea.analytical methods,7(16),6837-6841. |
| MLA | Wang, Qianru,et al."A colorimetric approach for measuring mercuric ions with high selectivity using label-free gold nanoparticles and thiourea".analytical methods 7.16(2015):6837-6841. |
入库方式： OAI收割
来源：大连化学物理研究所
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