应用化学 ›› 2010, Vol. 27 ›› Issue (11): 1318-1321.DOI: 10.3724/SP.J.1095.2010.90891

• 研究论文 • 上一篇    下一篇

硫化铜纳米粒子的合成及应用于汞离子的测定

龙云飞*,何全,陈述   

  1. (湖南科技大学化学化工学院 湘潭 411201)
  • 收稿日期:2009-12-30 修回日期:2010-05-03 出版日期:2010-11-10 发布日期:2010-11-10
  • 通讯作者: 龙云飞,男,教授; E-mail:l_yunfei927@163.com; 研究方向:光散射分析
  • 作者简介:龙云飞, 男, 教授;E mail:L_yunfei927@163.com;研究方向: 光散射分析.
  • 基金资助:
    湖南省自然科学基金(09JJ6021)湖南省青年骨干教师培养对象资助项目

Synthesis of Copper Sulfide Nanoparticles and Its Application to the Determination of Mercury Ion

LONG Yun-Fei *,HE Quan,CHEN Shu   

  1. (Institute of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan 411201)
  • Received:2009-12-30 Revised:2010-05-03 Published:2010-11-10 Online:2010-11-10
  • Contact: LONG Yun-Fei

摘要:

室温下以柠檬酸三纳为稳定剂,在水相中合成了CuS纳米粒子(NP-CuS)。 用共振光散射(RLS)技术探索了不同pH值和Cu2+与S2-不同配比条件下,体系RLS强度(IRLS)的变化。 结果表明,在最佳实验条件下,在0.01~100 μmol/L范围内IRLS与汞离子浓度间呈现良好的线性关系(r=0.991),据此建立了测定水中微量汞的方法。 方法的检测限为0.003 μmol/L,样品加标测定的回收率为100.3%~103.4%。

关键词: 硫化铜, 纳米粒子, 共振光散射, 汞离子

Abstract:

With citrate as a stabilizing agent, CuS nanoparticles were synthesized in aqueous phase. This article is to study the effects of resonance light scattering between CuS nanoparticles and mercury ions under the conditions of different pH values and the ratios of sodium sulfide and copper sulfate. Under optimum conditions, the method to determine trace mercury in water was established. The results showed that in the optimum experimental conditions, the intensity of resonance light scattering has a good linearity(r=0.991) in the range of 0.01~100 μmol/L with a detection limit of 0.003 μmol/L. The recovery is in the range of 100.3%~103.4% for Hg2+ detection in environmental water sample.

Key words: copper sulfide, nanoparticle, Resonance Light-scattering, mercury ion

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