肥料中高含量三聚氰胺检测方法的研究  

A new method for macro-amounts of melamine in fertilizers by ion chromatography

作　　者：孙明星[1] 吴晓红[1] 屠虹[1] 赵雨薇[1] 邱丰[1] 张继东[1] 沈国清[2] 

机构地区：[1]上海出入境检验检疫局工业品与原材料检测技术中心,上海200135 [2]上海交通大学环境科学与工程学院,上海20024

出　　处：《化学研究与应用》2013年第12期1733-1737,共5页Chemical Research and Application

基　　金：上海市科技兴农攻关项目(沪农科攻字2010第2-3号)资助

摘　　要：采用1%三氯乙酸溶液对肥料或土壤中三聚氰胺的提取,MCX固相萃取柱进行净化分离,用电导检测器-离子色谱仪进行微量---常量的三聚氰胺检测。检出限为1mg/kg,定量范围为可达2mg/kg^20%,标准添加回收率在91~105%。该方法准确、简便,测定范围宽,能适用较广泛的肥料样品中三聚氰胺的测定。The fertilizers and soils were extracted by 1% trichloroacid,and then clean-up and separation were performed on MCX SPE Column. The micro-, or macro-amounts of melamine can be determined by ion chromatography coupling with conductivity detector. The presented method showed good linear relationship（ r = 0. 9999）for melamine with the range of 2mg？ kg-1 - 20%, detection limit was 1 mg？ kg-1. The recoveries of melamine standard added ranged from 91% to 105%. With comparison of HPLC and IC analysis,the relative standard deviation between them was less than 4%. The method is accurate, and suitable for analysis of melamine within a large scope of soils＆fertilizers.

关 键 词：肥料 三聚氰胺测定 离子色谱 

分 类 号：O657.7[理学—分析化学]