摘要
本文报告了在０．０１ｍｏｌ／ＬＣＴＡＢ体系中，以Ｆ－为掩蔽剂、苯芴酮显色、用分光光度法测定饮料食品中Ｇｅ－１３２含量，最低检测限０．０５４μｇ／ｍＬ；线性范围０．５４～２７．１４μｇ／ｍＬ；回收率９６．３％～１０１．５％，并确定了Ｇｅ－１３２摩尔吸收系数（ε）３．３９×１０４。用本法测定了康寿茶、矿泉水和博士奶中Ｇｅ－１３２含量，灵敏度高、重现性和准确度好。用盐酸化本体系，研究了二氧化锗（Ｇｅ^（４＋））的含量测定，其最低检测限０．０２１μｇ／ｍＬ；线性范围１．０～２１．０μｇ／ｍｌ；回收率９５．８％～１０２．８％，Ｇｅ－１３２不干扰。饮料食品中同时存在Ｇｅ－１３２和Ｇｅ（４＋）时，本体系可分别测定两者含量。
The paper reports the spectrophotometric determination of bis-carboxyethyl germanium sesquioxide (Ge-132)in drink with the system of 0.01 mol/L cetivlon (CTAB) which F￣-as masking agent and the phenylfluorone as developing agent.The limit of detection is 0.54 μg/mL while the linear range 0.54～27.14 μg/mL and the recovery 96.3%～101.5%. The molar absorptivity of Ge-132 is 3.39×10￣4. The Kangshou Tea,Spring and the Bossi milk were determined by the proposed method with high sensitivity, nice reproducibility and good accuracy. The paper also studied the measurement of Ge￣(4+) in the acidified system, which with the limit detection is 0.021μg/mL while the linear range 1.0～21.0μg/mL and the recovery 95.8%～102.8%. The system is suitable for the sample analysis which it contained both Ge-132 and Ge￣(4+).
出处
《分析测试学报》
CAS
CSCD
1996年第2期43-48,共6页
Journal of Instrumental Analysis
关键词
CTAB
苯芴酮
饮料
锗-132
光度法
二氧化锗
Bis-carboxyethyl germanium sesquioxide(Ge-132),Spectrophotomitry,Cetavlon(CTAB),Phenylfluorone,F￣-,Ge￣(4+).
