摘要
目的建立饮用水中铝的流动注射分析测定法。方法在六亚甲基四胺缓冲溶液(pH=6.0)中,以邻菲啰啉和抗坏血酸为掩蔽剂,使铝离子与铬天青S反应生成络合物,在550nm波长下进行流动注射分析。结果在5～200μg/L范围内,该方法所得线性方程为:y=2.05×105x-1.47×104,其相关系数为0.9993,检出限为2.0μg/L,平均回收率在92.2%～108.0%之间,RSD在2.5%～8.2%之间。结论该方法简单、快捷、准确,适用于饮用水中铝含量的测定。
Objective To establish a method for the determination of aluminium in drinking water by flow injection analysis instrument. Methods In a hexamine buffer solution （pH=6.0）, phenanthroline solution and ascorbic acid as the anti-interference agent, aluminium could react with chromazurol S solution and form a compound,of which maximum absorption was at 550 nm. Results The linear range for this method was 5-200 ug/L. The correlation coefficient was 0.999 3, the detection limit of this method was 2.0 ug/L,the recovery rates were in the range of 92.2%-108% and RSD were in the range of 2.5%-8.2%. Conclusion The flow injection method is simple,rapid, accurate and is applicable to the determination of aluminium in drinking water.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2009年第11期999-1000,共2页
Journal of Environment and Health
关键词
水
流动注射分析
铝
Water
Flow injection analysis
Aluminium
作者简介
刘裕婷（1978-），女，主管技师，从事食品、水质、劳动卫生检测。
