Determining of Cyanogen Chloride in Drinking Water
- VernacularTitle:饮用水中氯化氰的吡啶-巴比妥酸分光光度测定法
- Author:
Xiulan BIAN
;
Yaohui CHEN
;
Xiaochuan LIU
- Publication Type:Journal Article
- Keywords:
Water;
Cyanogen chloride;
Pyridine-barbituric acid;
Spectrophotometry
- From:
Journal of Environment and Health
1992;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develop a method for determining cyanogen chloride (CNCl) in drinking water. Methods Pyridine-barbituric acid spectrophotometry was employed and some parameters including the pH value of the phosphate buffer, the time of color reaction, temperature, the concentration of chloramine T, the proportion of the phosphate buffer, the proportion of color agent and the maximum absorption wavelength were optimized. The linear range, limit of detection, precision and recovery rate were studied. Results Trace quantity of CNCl obeyed the Law of Beer. In the range of 0-0.1 ?g/ml CN-, the correlation coefficient was 0.999 4, the regression equation was y=0.194x-0.033, the limit of detection was 0.003 ?g/L, the lower limit of detection was 0.01 mg/L, the relative standard deviations were 1.5%-6.2% and the recovery rates were 92.9%-107.1%. Conclusion The method has the characters of accurate, sensitive, simple and rapid, it can be used in monitoring of drinking water quality.
