食品科学 ›› 2008, Vol. 29 ›› Issue (2): 300-301.

• 分析检测 • 上一篇    下一篇

水溶性meso-四(4-氯-3-磺酸钠基苯基)卟啉测定食品中铅(Ⅱ)含量的研究

 王涛, 韩士田   

  1. 河北师范大学化学与材料学院; 河北师范大学化学与材料学院 河北石家庄050016 河北科技大学理学院; 河北石家庄050018; 河北石家庄050016;
  • 出版日期:2008-02-15 发布日期:2011-08-24

Study on Determination of Pb(Ⅱ) in Food with Meso-tetra(4-Chlorol-3-Sulfophenyl) Porphyrin

 WANG  Tao, HAN  Shi-Tian   

  1. 1.College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang 050016, China;2.College of Sciences, Hebei University of Science and Technology, Shijiazhuang 050018, China
  • Online:2008-02-15 Published:2011-08-24

摘要: 研究了meso-四(4-氯-3-磺酸钠基苯基)卟啉(p-ClTPPS4)与铅(Ⅱ)显色反应。结果表明,不需加热即可完成络合,表观摩尔吸光系数2.51×105L/mol·cm,线性范围为0~6μg/10ml,抗干扰能力强。应用该方法首次测定食品中痕量铅(Ⅱ),结果令人满意。

关键词: 卟啉, 食品, 铅, 显色反应

Abstract: The colour reaction of p-ClTPPS4 with Pb(Ⅱ) was studied in this study. The results showed that complexation reaction can complete without heating, the apparent molar absorption coefficient is 2.51×105 L/mol·cm, linear range is 0~ 6μg/10ml, and the ability of anti-jamming is high. The proposed method has been applied for determination of Pb(Ⅱ) in food with satisfiedr esults.

Key words: porphyrin, food, Pb(Ⅱ), colour reaction