摘要
在ｐＨ８氨性溶液中，铝（Ａｌ３＋）与茜素红Ｓ（ＡＲＳ）反应，显色液由紫红色转桔黄色。本文研究β修正新光度法测定痕量铝，该方法可将反应液中剩余ＡＲＳ干扰消除，β修正吸光度（Ａβ）与Ａｌ浓度在０～２５μｇ／２５ｍｌ范围内符合比耳定律，且分析灵敏度高。实验表明，ＲＳＤ≤２．９％，加标回收率９１．９～１０９％，铝最低检测浓度０．０２４ｍｇＬ－１。方法适合于环境水中痕量铝测定。
in PHS solution Aluminum (Al3+) can react with Alizarine Red S (ARS) to change the solution from violet-red to yellow. In this paper P corretion new spectrophotometry was studied to determine trace Al in environmental water.It can eliminate the effect of the excess ARS for in such a colored solution to make P correction absorbance (AP)linear with Al concentration and to increase the analytical sensitivity. Experiments for waters showed that RSD ≤2. 9 % and the recovery was beween 91. 1-109 %. The minimum determination concentration of Al is only 0. 024mg/L.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1995年第2期123-127,共5页
Spectroscopy and Spectral Analysis
关键词
β修正吸光度
铝
茜素红S
光度法
correction absorbance, Aluminium, Alizarine red S (ARS)
