摘要
水样经不同的预处理,在酸性条件下,正磷酸盐和钼酸铵反应形成磷酸钼螯合物,加入氯化亚锡还原为钼,并呈现蓝色,用流动注射仪于700nm波长处分别测定总磷、溶解性正磷酸盐和总溶解性磷。流动注射法简化了测定步骤,提高了分析速度,灵敏度高,重复性好,测定结果与国家标准方法相比,具有较高的相关性,能满足水和废水中磷的分析。
After pre-treated, under the acid condition, orthophosphate was reacted with ammonium molybdate to get chelate. To plus SnCl2, it became blue. With flow injector, in 700 nm, to detect TP, dissolved orthophosphate and total dissolved P. This method was simple, fast and sensitive. The detection value had good correlation with the detection value with state standard methods, it can be used to detect P in water and wastewater.
出处
《环境监测管理与技术》
2004年第5期27-28,共2页
The Administration and Technique of Environmental Monitoring
