摘要
采用微波消解前处理,电感耦合等离子体质谱法(ICP-MS)测定食用菌中铅、砷、汞、镉、铬、铜、锰、锌和镍的含量。试验表明,铅、砷、镉、铬等元素在0～500 ng/mL浓度范围内线性良好,Hg在0～2ng/mL浓度范围内线性良好,各元素的线性方程相关系数均大于0.999,检出限在0.012～0.95 ng/mL之间,测定所有元素相对标准偏差均小于5%,加标回收率在89.5%～110.0%之间。同时,四种标准物质GBW08521,GBW(E)080684,GBW07605(GSV-4)和GBW10017中各元素测定值均在标准值范围之内,由此说明该方法能够简单、快速、灵敏、准确测定食用菌中重金属元素的含量。
Inductively coupled plasma mass spectrometry（ICP-MS） with microwave digestion was applied to determine lead,arsenic,mercury,cadmium,chromium,copper,manganese,zinc,nickel in edible mushrooms.The linear ranges are 0-500 ng/mL,0-2 ng/mL for Hg,and linear correlation factors for each element are good（r〉0.999）.The detection limits were 0.012-0.95 ng/mL.Precision was fine,and RSD is lower than 5%,and recoveries of spice samples were in the range of 89.5%-110.0%.The results showed close agreement with the reference values in several standard reference materials of GBW08521,GBW（E）080684,GBW07605（GSV-4） and GBW10017.It indicated that the method is simple,sensitive,accurate and short of analytical cycle,which can meet the demand for determining heavy metal elements in edible mushrooms.
出处
《食品工业》
北大核心
2012年第6期122-124,共3页
The Food Industry
基金
上海市科委<食品安全检测公共服务平台能力建设>项目编号09DZ2291400
关键词
食用菌
金属
微波消解
电感耦合等离子体质谱
edible mushrooms
heavy metal elements
microwave digestion
inductively coupled plasma mass spectrometry
