| 基于纳米金可视化检测邻苯二胺 |
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| 引用本文： | 梁杨琳,司露露,李福,廖秀芬,吕春秋.基于纳米金可视化检测邻苯二胺[J].分析试验室,2020(5):537-540. |
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| 作者姓名： | 梁杨琳 司露露 李福 廖秀芬 吕春秋 |
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| 作者单位： | 南宁海关技术中心;广西产品质量检验研究院;广西大学化学化工学院 |
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| 基金项目： | 广西重点研发计划基金项目(桂科AB17292071)资助。 |
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| 摘 要： | 采用柠檬酸钠还原氯金酸的方法制得粒径约为13 nm的纳米金(AuNPs)。在弱碱性环境中,在NaCl的诱导下,AuNPs与邻苯二胺(OPD)发生相互作用,AuNPs发生团聚显色,使其最大吸收峰发生红移,由此建立了邻苯二胺的比色测定方法。在最佳条件下,方法的线性范围为33. 3~333. 3 nmol/L,检出限为11. 1 nmol/L。方法用于染发剂中邻苯二胺的含量,回收率为93. 4%~96. 4%,RSD小于≤2. 3%。
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| 关 键 词： | 纳米金 邻苯二胺 可视化检测 |
Study on the visual detection of o-phenylendiamine by gold nanoparticles |
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| Institution: | (Nanning Customs Technology Center,Nanning 530021;Guangxi Zhuang Autonomous Region Testing Institute of Product Quality,Nanning 530007;College of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004) |
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| Abstract: | Gold nanoparticles( diameter about 13 nm) were prepared by sodium citrate reduction method. It was observed that in weakly alkaline buffer medium,o-phenylendiamine( OPD) induced the aggregation of Au NPs,leading to the color changed from red wine to blue and the red shift of the absorption spectrum. Under the optimized experimental conditions,o-phenylendiamine could be detected based on absorbance ratio of A660 nm/A520 nm. A linear relationship could be get between the concentration of 33. 3 and 333. 3 nmol/L,with the detection limit of 11. 1 nmol/L. The proposed method was applied to the determination of OPD in real samples with the recoveries of the concentration of 93. 4%-96. 4% and RSD lawer than 2. 3%. |
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| Keywords: | gold nanoparticles o-phenylendiamine(OPD) visual detection |
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