电感耦合等离子体串联质谱法测定农作物样品中硫元素  

Determination of Sulfur in Crops by Triple Quadrupole Inductively Coupled Plasma Mass Spectrometry

作　　者：李耕伟 解魁[2] 赵志飞 宋娟娥[3] LI Geng-wei;XIE Kui;ZHAO Zhi-fei;SONG Juan-e(XinXiang Grain and Oil Quality Inspection Station,Xinxiang,Henan 453000,China;Henan Center for Disease Control and prevention,Zhengzhou,Henan 450016,China;Agilent Technologies(China)Co.,Ltd.,Beijing 100102,China)

机构地区：[1]新乡市粮油饲料产品质量监督质检所,河南新乡453000 [2]河南省疾病预防控制中心,河南郑州450016 [3]安捷伦科技(中国)有限公司,北京100102

出　　处：《粮油食品科技》2020年第6期191-194,共4页Science and Technology of Cereals,Oils and Foods

摘　　要：采用微波消解–电感耦合等离子体串联质谱法(ICP–MS/MS)测定农作物样品中硫元素,建立了农作物样品中硫元素高灵敏度分析的检测方法。分别对测量模式、干扰消除效果、方法线性范围、方法检出限和方法准确度进行实验。结果表明:串接氧气模式可以有效消除硫元素的质谱干扰,方法灵敏度高,方法检出限达到1.8μg/g,可对硫元素含量在2%以下样品直接分析,方法经过国家标准物质验证,测定值均在标称值范围之内,可作为农作物样品中硫元素分析新方法使用。Microwave Digestion-Triple Quadrupole Inductively Coupled Plasma Mass Spectrometry(ICP-MS/MS)was used to determine sulfur in crop samples,and a high sensitivity sulfur detection method in crop samples was provided.The measurement mode,interference elimination effect,linear range,detection limit and accuracy of the method were tested.The results show that the MS/MS oxygen mode can effectively eliminate the mass spectrum interference of sulfur,the method has high sensitivity,the detection limit of the method reaches 1.8μg/g,and the sample with sulfur content below 2%can be directly analyzed by the method.The method was verified by national standard material,and the measured values were within the range of nominal value.It can be used as a new detection method for sulfur element analysis in crop samples.

关 键 词：农作物 硫 电感耦合等离子体串联质谱法 

分 类 号：O657.63[理学—分析化学] TS207.3[理学—化学]