摘要
采用电感耦合等离子体-质谱(ICP-MS)测定了14种鱿鱼丝(Dried Shredded Squid,DSS)中的砷总量,发现14种鱿鱼丝中的砷总量均低于2μg.g-1;用高效液相色谱(HPLC)与ICP-MS联用技术建立了As(Ⅲ)、As(Ⅴ)、二甲基胂酸(DMA)、甲基胂酸(MMA)、砷甜菜碱(AsB)和砷胆碱(AsC)六种砷形态的分离分析方法;采用快速溶剂萃取(ASE)、超声溶剂提取(SON)和盐酸浸提三种不同的前处理方法分析了3种鱿鱼丝中的砷形态,发现鱿鱼丝中的砷主要以AsB形式存在。
14 types dried shredded squid(DSS) saled in Qingdao were examined for their total arsenic content and As species. Total arsenic concentration in these DSS were all below 2 μg·g^-1. For the species, a method was established using high performance liquid chromatography(HPLC) hyphenated with inductively coupled plasma-mass spectrometry(ICP-MS) for separation of arsenobetaine (AsB), arsenocholine (AsC), arsenite (As(Ⅲ)), arsenate (As(Ⅴ)), monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA) in one chromatographic run. The As species in 3 DSSs were extracted using accelerated solvent extraction (ASE), sonication extraction (SON) and hydrochloric acid extraction. The results showed that arsenobetaine (AsB) was the main species in these DSS.
出处
《分析科学学报》
CAS
CSCD
2007年第6期621-626,共6页
Journal of Analytical Science
基金
国家自然科学基金(No.20675021)
关键词
砷
形态分析
高效液相色谱
电感耦合等离子体一质谱
Arsenic
Speciation
High performance liquid chromatography(HPLC)
Inductively coupled plasma mass spectrometry(ICP MS)