摘要
报道了新试剂苯并噻唑重氮氨基偶氮苯的合成及其与汞(Ⅱ)的显色反应。在Triton X-100存在下的弱碱性介质中,试剂与汞形成2:1的橙红色络合物,最大吸收波长位于520 nm处,表观摩尔吸光系数为1.51×105L·mol-1·cm-1。汞量在 0~1.2mg/L范围内遵守 比尔定律。直接应用于废水中微量汞的测定,结果满意。
The synthesis of a new reagent benzothiazolyldiazoaminoazobenzene and its chro- mogenic reaction with mercury (Ⅱ) ion was reported. In a weak alkaline medium, the reagent reacts with mercury(Ⅱ) to form an orange-red complex of component ratio 2: 1. The absorption maximum of the complex is at 520 nm and the apparent molar absorptivity is 1. 51×105L·mol-1·cm-1. Beer's law is obeyed for mercury (Ⅱ) in the range 0-1. 2 mg/L. This method is employed to determine trace amounts of mercury(Ⅱ) in waste water with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1997年第10期1206-1209,共4页
Chinese Journal of Analytical Chemistry
基金
辽宁省自然科学基金
关键词
分光光度法
DTDAB
汞
显色剂
Benzothiazolyldiazoaminoazobenzene,mercury, spectrophotometry