| Label free colorimetric sensing of thiocyanate based on inducing aggregation of Tween 20-stabilized gold nanoparticles | |
Zhang, Zhiyang1,3 ; Zhang, Jun2; Qu, Chengli1; Pan, Dawei1; Chen, Zhaopeng1; Chen, Lingxin1
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| 发表期刊 | ANALYST
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| 2012 | |
| 卷号 | 137期号:11页码:2682-2686 |
| 英文摘要 | Based on inducing the aggregation of gold nanoparticles (AuNPs), a simple colorimetric method with high sensitivity and selectivity was developed for the sensing of thiocyanate (SCN-) in aqueous solutions. Citrate-capped AuNPs were prepared following a classic method and Tween 20 was subsequently added as a stabilizer. With the addition of SCN-, citrate ions on AuNPs surfaces were replaced due to the high affinity between SCN- and Au. As a result, Tween 20 molecules adsorbed on the AuNPs surfaces were separated and the AuNPs aggregated. The process was accompanied by a visible color change from red to blue within 5 min. The sensing of SCN- can therefore be easily achieved by a UV-vis spectrophotometer or even by the naked eye. The potential effects of relevant experimental conditions, including concentration of Tween 20, pH, incubation temperature and time, were evaluated to optimize the method. Under optimized conditions, this method yields excellent sensitivity (LOD = 0.2 mu M or 11.6 ppb) and selectivity toward SCN-. Our attempt may provide a cost-effective, rapid and simple solution to the inspection of SCN- ions in saliva and environmental aqueous samples. |
| 文章类型 | Article |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | DNA-BINDING MOLECULES ; STRIPPING VOLTAMMETRY ; ION CHROMATOGRAPHY ; ELECTRODE ; PROBES ; ASSAY ; APTAMER ; IODINE |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000303768100024 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/5695 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res YIC,YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Shandong 264003, Peoples R China 2.Hainan Med Univ, Sch Trop & Lab Med, Haikou 571101, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhiyang,Zhang, Jun,Qu, Chengli,et al. Label free colorimetric sensing of thiocyanate based on inducing aggregation of Tween 20-stabilized gold nanoparticles[J]. ANALYST,2012,137(11):2682-2686. |
| APA | Zhang, Zhiyang,Zhang, Jun,Qu, Chengli,Pan, Dawei,Chen, Zhaopeng,&Chen, Lingxin.(2012).Label free colorimetric sensing of thiocyanate based on inducing aggregation of Tween 20-stabilized gold nanoparticles.ANALYST,137(11),2682-2686. |
| MLA | Zhang, Zhiyang,et al."Label free colorimetric sensing of thiocyanate based on inducing aggregation of Tween 20-stabilized gold nanoparticles".ANALYST 137.11(2012):2682-2686. |
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| Label free colorimet（459KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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