摘要
本文采用气相色谱法（GC）、电感耦合等离子体质谱法（ICP-MS）、离子色谱法（IC）分别测定了婴幼儿配方乳粉中碘的含量。通过多方面因素对比：前处理的方式、碘的测定种类、方法线性范围、回收率、检出限、精密度等,得出电感耦合等离子体质谱法前处理操作简便,受奶粉复杂基质干扰最小,在1~50μg/L线性范围内,相关系数可达到0.999以上。回收率在95.9%~103.7%之间,RSD为0.6%~2.2%,检出限为0.6μg/100g,最适合用于婴幼儿配方乳粉中微量碘的实验室常规分析。
Gas chromatography （ GC）, inductively coupled plasma - mass spectrometry （ ICP - MS） and ion chromatography（IC） were used to determine iodine in infant formula powder. Comparing various factors.. pretreatment method,iodine types, linear range and recovery, detection limit, precision, etc.Pretreatment of ICP- MS method was simple,the interference of complex matrix was minimum,the linear range between 1g/L to 50μg/ L,correlation coefficient could reach more than 0.999, recovery rate was between 95.9% -103.7%, RSD was 0.6% 2.2% ,the detection limit was 0.6μg/100g.ln conclusion,coupled plasma mass spectrometry was more suitable for iodine determination of infant formula milk powder in laboratory routine analysis.
出处
《食品工业科技》
CAS
CSCD
北大核心
2015年第7期281-285,共5页
Science and Technology of Food Industry
基金
国家科技支撑计划课题(2012BAK17B04)
关键词
碘
气相色谱法
电感耦合等离子体质谱法
离子色谱法
婴幼儿配方乳粉
iodine
gas chromatography
inductively coupled plasma- mass spectrometry
ion chromatography
infant formula powder
