摘要
研究了7-碘-8-羟基喹啉5-磺酸(H2QSI)-十六烷基三甲基溴化铵(CTMAB)荧光分光光度法测定水中铝,确定了反应适宜的条件,于pH 5.0-5.5的乙酸-乙酸钠缓冲液中,在CTMAB存在下,铝与H2QSI形成1:2的配合物。配合物激发波长为389 nm,发射波长为499 nm,在0.01-0.3 mg/L范围,荧光强度与铝浓度呈良好线性关系(γ=0.9993)。检测限0.009 mg/L,平均回收率95.5%。
Aluminum is determined by spectrophotofluorometry using 7-iodo-8-hidrxyquioline-5-sulfonic acid (H2QSI) and cetyi trimethyl ammonium bromide as reagents. The wavelengths of excitation and emission are 389 nm and 499 nm, and the linear range and detection limit are 0.01-0. 3 mg/L and 0. 009 mg/L, respectively. The effects of 16 ions on the determination have been studied.
出处
《环境监测管理与技术》
1996年第1期31-34,共4页
The Administration and Technique of Environmental Monitoring
关键词
铝
测定
荧光分光光度法
水
饮用水
Aluminum Determination Fluorescent spectophotometry Water
