HPLC-ICP-MS在紫菜中砷形态分析的应用  

Determination of Arsenic Species in Laver by HPLC-ICP-MS

作　　者：刘桂华[1] 汪丽[2] 

机构地区：[1]深圳市卫生防疫站中心实验室,广东深圳518020 [2]中山大学化学与化工学院中心实验室,广东广州510275

出　　处：《分析测试学报》2002年第4期88-90,共3页Journal of Instrumental Analysis

摘　　要：通过HPLC -ICP_MS联用技术初步探讨了紫菜中砷的形态;选用了纯水萃取 ,再用甲醇稀释 ,用阴离子交换色谱柱经HPLC分离 ,再用ICP_MS测定,实验发现了2个未知形态色谱峰;该技术将液相色谱的分离技术与ICP_MS高灵敏度的检测方式相结合 ,具有分离效果好 ,灵敏度高 ,耗样量少 ,速度快 。HPLC-ICP- MS was employed for primary research on arsenic species in laver. The compounds of different arsenic species in laver extracted by pure water, and then the extact was diluted by methanol. Chromatographic separation was performed in an anion column with an eluent consisting of 0.2 mmol/L phosphate buffer(containing 0.2 mmol/L EDTA)-methanol(95∶5 by volume) mixture, and eluate was monitored by ICP- MS. Arsenic species in commercial laver were determined and discussed. The method has advantages of high sensitivity, effective separation, less amount of sample and wide linear range of determination.

关 键 词：HPLC-ICP-MS 紫菜 砷 形态分析 高效液相色谱 电感耦合等离体质谱法 食品分析 

分 类 号：TS254.58[轻工技术与工程—水产品加工及贮藏工程] TS254.7[轻工技术与工程—食品科学与工程]