食品科学 ›› 2006, Vol. 27 ›› Issue (6): 184-186.

• 分析检测 • 上一篇    下一篇

流动注射氢化物发生-原子吸收光谱法测定食醋中微量铅

 魏利滨, 罗胜铁, 宋长友   

  1.  唐山学院环境与化学工程系
  • 出版日期:2006-06-15 发布日期:2011-09-22

Determination of Trace Lead in Vinegar by Flow Injection Hydride Generation - atomic Absorption Spectrometry

 WEI  Li-Bin, LUO  Sheng-Tie, SONG  Chang-You   

  1. Department of Environmental and Chemical Engineering, Tangshan College, Tangshan 063000, China
  • Online:2006-06-15 Published:2011-09-22

摘要: 建立了应用氢化物发生-原子吸收法测定食醋中微量铅的方法。探讨了氧化剂、盐酸、硼氢化钾溶液浓度及载气流量对样品测定的影响,确定了最佳试验条件,Pb2+在0~0.12mg/L范围内具有良好的线性关系,方法的回收率为96%~105%,检出限可达0.32μg/L。该法简便、快速、灵敏,对实际样品的测定结果令人满意。

关键词: 流动注射, 原子吸收分析法, 氢化物, 食醋,

Abstract: The paper studied the determination of trace lead in vinegar by flow injection hydride generation-atomic absorption spectrometry. It also studied the effects which the solution concentration of oxidizer, hydrochloric acid, potassium borohydride and the airflow applied to the sample determination. It determined the optimum experiment conditions. When Pb2+ is between 0 and 0. 12mg/L, good linear relation is formed. The rate of Pb2+ reclamation is from 96% to 105% and the detection limit 0.32μg/L. This method is simple, quick and sensitive. It has a satisfactory result in sample assaying.

Key words: flow injection, atomic absorption spectrometry, hydride generation, vinegar, lead