%0 Journal Article
%T Determination of Micro Amounts of Iodide in Dairy Products by Ion Chromatography with Direct Amperometric Detector<br>安培检测-离子色谱法测定乳品中的微量碘
%A CHAI Cheng wen
%A LIU Ke na
%A MOU Shi fen
%A <br>柴成文
%A 刘克纳
%A 牟世芬
%J 色谱
%D 2001
%I 
%X A method was developed for the determination of micro amounts of iodide in dairy products by ion chromatography with direct amperometric detection. The eluent used was 0.04 mol/L NaOH. The relative standard deviations of retention times and peak heights for 1 mg/L and 2 micrograms/L iodide solutions were 0.67%, 3.9% (n = 8) and 0.97%, 1.8% (n = 8), respectively. Calibration curves showed good linearity with r = 0.9991 (n = 8, from 10 micrograms/L to 160 micrograms/L), and with r = 0.9986 (n = 8, from 400 micrograms/L to 5 mg/L). The detection limit of iodide by this method was 1 microgram/L. The method has been used to analyse two kinds of milk powder and a kind of fresh milk. The recoveries were 89.0%, 86.0% and 84.1% for infant formula milk powder, mother's milk powder and fresh milk, respectively.
%K ion chromatography
%K iodide
%K dairy product
%K milk<br>离子色谱法
%K 碘
%K 乳制品
%K 牛奶
%K 安培检测
%K 微量分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=DE7AB36D5BEF23C1&yid=14E7EF987E4155E6&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&sid=BB0EA31DB1B01173&eid=6700D0D256586E73&journal_id=1000-8713&journal_name=色谱&referenced_num=10&reference_num=5