摘要
采用SKALAR SAN++型连续流动分析仪,将土壤样品在酸性条件下进行预蒸馏,馏出液中氰化物和氯胺T作用生成氯化氰,然后与异烟酸反应,经水解而生成戊烯二醛,最后与1,3-二甲基巴比妥酸作用生成紫蓝色化合物,于600 nm波长处测定其吸光度。结果表明该方法快速、准确、灵敏度高,稳定性好。
The determination of total cyanide in the soil by SKALAR SAN＋＋continuous flow analysis was discussed. The soil samples were pre-distilled in acidic conditions. The photometric determination was based on the reaction of cyanide with chloramine-T under the formation of cyanogen chloride. It reacted with pyridine-4-carbonicacid and 1,3-dimethylbarbituric acid to give a violet blue color. This color was measured at 600 nm. The results showed that the method was fast, accurate, high sensitivity and good stability.
出处
《环境科技》
2014年第3期58-61,共4页
Environmental Science and Technology
基金
苏州市职业大学青年基金资助项目(2010SZDX10)
关键词
连续流动分析法
总氰化物
土壤
底泥
Continuous flow analysis
Total cyanide
Soil
Sedimentrecovery
