现代食品现代食品XIANDAISHIPIN177177/分析检测分析检测AnalysisandTestingdoi:10.16736/j.cnki.cn41-1434/ts.2022.24.047ICP-MS与测汞仪法测定水产品中汞元素含量的对比研究ComparativeStudyonDeterminationofMercuryinAquaticProductsbyICP-MSandMercuryVapourmeter◎黄冰洋1,2,李哲1,2,陈景周1,2,李秀英1,2,杨东成1,2,冯倬诚1,2(1.广州检验检测认证集团有限公司,广东广州511447;2.国家加工食品质量检验检测中心(广东),广东广州511447)HUANGBingyang1,2,LIZhe1,2,CHENJingzhou1,2,LIXiuying1,2,YANGDongcheng1,2,FENGZhuocheng1,2(1.GuangzhouInspectionTestingandCertificationGroupCo.,Ltd.,Guangzhou511447,China;2.NationalQualityInspectionandTestingCenterforProcessedFoods(Guangdong),Guangzhou511447,China)摘要:目的:比较超级微波消解-电感耦合等离子体质谱法(InductivelyCoupledPlasmaMassSpectrometry,ICP-MS)和测汞仪法测定水产品中总汞(Hg)含量的区别。方法:ICP-MS法采用超级微波进行消解,测汞仪法无需消解前处理,直接进样测定,两种方法均用外标法定量。结果:在实验的最终测定条件下,ICP-MS测定的汞元素在0~2.0μg·L-1线性关系良好,相关系数R=1.0000,检出限为1.0μg·kg-1,精密度为2.71%~3.44%,样品加标回收率为92.2%~98.6%。直接测汞仪法测定汞元素在0~20ng线性较好,相关系数R=0.9997,检出限为0.05μg·kg-1。精密度为4.63%~6.45%,样品加标回收率为101.7%~109.3%。结论:两种检测方法准确率高、线性关系好、检出限低,均能快速有效测定水产品中的汞元素含量。大量检测水产品汞元素可选用ICP-MS检测法,而少量水产品则可选用测汞仪法。关键词:电感耦合等离子体质谱法;测汞仪;汞;水产品Abstract:Objective:Tocomparethedifferencebetweenthedeterminationoftotalmercury(Hg)inaquaticproductsbyultramicrowavedigestioninductivelycoupledplasmamassspectrometry(ICP-MS)andmercuryvapourmeter.Method:ICP-MSmethodadoptssupermicrowavedigestion,whilemercuryvapourmetermethoddidnotrequirepretreatmentbeforedigestion,anddirectlydeterminedbysampleinjection.Bothmethodswerequantitativebyexternalstandardmethod.Result:Underthefinalmeasurementconditionsoftheexperiment,theHgdeterminationbyICP-MShadagoodlinearrelationshipintherangeof0~2.0μg·L-1withthecorrelatio...