水中微量氰化物的测定方法——异烟酸-巴比妥酸主次波长光度法  

Determination of Trace Cyanide in Water by Primary-secondary Wavelengthes Spectrophotometry with System of Isonicotinic Acid-Barbituric Acid

作　　者：程永华[1] 胡娟[1] 

机构地区：[1]平顶山师范高等专科学校化学系

出　　处：《分析测试学报》1998年第6期69-71,共3页Journal of Instrumental Analysis

摘　　要：根据异烟酸－吡唑啉酮和吡啶－巴比妥酸光度法测定水中氰化物的基本原理，将二者重新组合成异烟酸－巴比妥酸体系，采用主次波长光度法测定。该法具有室温显色，显色所需时间较短，有色溶液稳定，对环境污染小，灵敏度高等优点，其最低检测限为０００１ｍｇ／Ｌ。特别适合于饮用水、生活污水、工业废水中微量氰化物的测定。通过对实际样品分析，与原方法进行比较，结果令人满意。According to the principle of determination of cyanide in water by isonicotinic acid-pyrazolone and pyridine-barbituric acid,a new isonicotinic acid-barbituric acid system has been found and was applied to the determination by primary-secondary wavelengthes spectrophotometry.The proposed method has advantages of colour developing at room temperature and in a short time,stable colour of solution,smaller pollution,high sensitivity,etc.The detection limit of the method is 0 001 mg/L.It is suitable for analysis of drinking water,domestic sewage and industrial waste water.The method has been applied to the determination of practical samples with satisfactory results.

关 键 词：异烟酸 巴比妥酸 水样 氰化物 光度法 水质监测 

分 类 号：X832.02[环境科学与工程—环境工程] TU911.21[建筑科学—建筑理论]