摘要
依据Ａｌ３ ＋ 催化Ｈ２Ｏ２ 氧化椪花青褪色的反应， 建立了测定痕量铝的催化动力学分析法． 线性范围为０ ～２００ｎｇ／ｍＬ ， 检测限１－２ｎｇ／ｍＬ ． Ｆｅ３ ＋ 和Ｃｕ２ ＋ 的干扰分别用铜铁试剂－ 氯仿和双硫腙－ 四氯化碳溶液萃取除去， 而将Ｃｒ（ Ⅵ） 还原为Ｃｒ３ ＋ 即可消除其干扰．
Acatalytic procedurefor the determination of ultratrace aluminum had been proposed based on Al3 + catalyzed H2 O2 - Gallocyanine indicator reaction in hexamine - hydrochloric acid buffer. The calibration graphislinearfor0 ～200ng/mLAl3 + , andthe detectionlimitis1-2ng/ mL . Theinterferences of Fe3 + and Cu2 + was effectively eliminated by extraction with cupferron-chloroform and dithizone- carbon tetrachloride, and that of Cr( Ⅵ)by reducing to Cr( Ⅲ), respectively.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
1999年第S1期233-234,共2页
Journal of Fuzhou University(Natural Science Edition)
基金
山东省自然科学基金!(Y95B0114
Y97B04027)
关键词
动力学光度法
椪花青
铝
测定
catalyticspectrophotometry
gallocyanine
aluminum
determination
