摘要
合成了四(4-羟基-3-乙氧基苯基)卟啉,用元素分析、质谱、紫外-可见光谱、红外光谱及核磁共振氢谱进行了表征,研究了该卟啉与铅离子的显色反应条件.结果表明,当pH=11.0时,在十二烷基磺酸钠存在下,沸水浴加热5min反应完全,在473nm处测得配合物的表观摩尔吸光系数为2.08×10^5L/(mol·cm),铅量在0-12μg/25mL范围内符合比尔定律,用此法成功地测定人发标准物质中的微量元素铅的含量.
A new color reagent, tetra (4-hydroxy-3-ethoxyphenal) porphyrin, was synthesized and characterized by elemental analyses, MS, UV-Vis spectrum, Infrared spectrum, and 1^H NMR spectrum. In a pH = 11 solution with NaOH and Na[ B4O5 (OH)4 ] · 8H2O, the complex of this color reagent with Pb was formed. The apparent molar absorptance of the complex was 2.08 × 10^5 L/(mol · cm) (λ =473 nm ). Beer's low was obeyed for Pb in the range of 0-12 μg/25 mL. The reagent was applied to the determination of Pb in the certiffed reference material ( GBW07601 ) successfully.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第4期651-654,共4页
Chemical Journal of Chinese Universities
基金
吉林大学跨学科重点项目(批准号:2005Kxk004)资助
作者简介
联系人简介:师同顺,男,教授,博士生导师,主要从事卟啉功能配合物的研究.E-mail:tsshi@email.jlu.edu.cn