摘要
采用德国布朗卢比AA3型流动注射分析仪测定水中硫化物,通过在线处理释放出H2S气体,在酸性介质中与对氨基二甲基苯胺和三氯化铁反应,生成亚甲蓝染料,于660nm处比色测定。方法检出限为0.004mg/L,标准曲线有很好的稳定性,灵敏度大大提高,精密度和准确度较好,操作简便易行,能满足大批量水样以及应急监测及时准确分析的需求。
The flow injection analysis instrument from Bran Luebbe of German was used to monitor the sulfide in the water. The H2S gas was released by on -line treatment to react with ferric chloride and p -aminodimethyl aniline to methylthionine chloride which was determined by colorimetric method under 660 nm. The detection limit of this method is 0. 004mg/L with stable standard curve and highly improved sensitiveness and excellent accuracy and simple operation which can meet the monitoring requirements of large number of water samples and emergent monitoring.
出处
《环境科学导刊》
2011年第2期97-100,共4页
Environmental Science Survey
关键词
流动注射仪
在线分析
水中硫化物
flow injection analysis instrument
analysis on line
sulfide in the water
