摘要
根据ＣＮ－ 对５－（４－磺酸基苯偶氮）－８－氨基喹啉（ＳＰＡＱ）－Ｎｉ２＋ －ＣＴＭＡＢ体系的干扰褪色作用，建立了一种测定氰化物的新方法。该方法比传统方法操作简便，不需要萃取。体系λｍ ａｘ＝ ６００ｎｍ ，ε＝ ６．８８×１０４ Ｌ·ｍ ｏｌ－ １·ｃｍ － １。ＣＮ－ 含量在０～５ μｇ／２５ｍ Ｌ内符合比尔定律。方法用于环境水样中氰化物的测定。
Based on the decoloring effect of CN - on 5 (4 sulfonatephenylazo) 8 aminoquinoline (SPAQ) Ni(Ⅱ) CTMAB color system,a new method for the determination of cyanide was established.It is simpler than traditional methods,it does not need extraction.The maximum absorption of this system is at 600nm,with a molar absorptivity of 6 88×10 4 L·mol -1 ·cm -1 .Beer's law is obeyed in the range of 0～5 μg/25mL of CN -.The proposed method has been applied to the determination of cyanide in water with satisfactory results.
出处
《分析试验室》
CAS
CSCD
1999年第6期83-84,共2页
Chinese Journal of Analysis Laboratory
关键词
光度法
褪色光度法
氰化物
SPAQ
褪色作用
水样
Spectrophotometry
5 (4 sulfonatephenylazo) 8 aminoquinoline
cyanide
enviromental water
