文章编号：1673-887X(2023)01-0077-03原子荧光法同时测定土壤中砷和汞前处理方法初探张开志，罗婷婷，高金晓，孟摆，金保元，苏朝顺（瑞丽市农产品质量安全检测站，云南瑞丽678600）摘要文章建立一种新的土壤样品前处理方法，处理后可利用原子荧光法同时测定土壤中的砷和汞。样品采用硝酸、盐酸混合试剂加热消解，在优化的测量条件下，对石墨消解仪和水浴加热消解前处理方法检测比较，找到原子荧光法同时测定土壤中砷汞最佳的前处理方法。水浴消解法在80℃、150min条件下，消解效果最好；石墨消解在80℃、180min条件下，消解效果最好。砷准确度在91.8%~101%，RSD在0.20%~3.1%，汞准确度在97.0%~98.5%，RSD在3.9%~5.8%，满足土壤中砷汞测定要求。关键词原子荧光分析法；土壤；砷；汞；测定中图分类号S155.5+5文献标志码Adoi:10.3969/j.issn.1673-887X.2023.01.027NovelPretreatmentMethodforSimultaneouslyDeterminedArsenicandMercuryinSoilbyAtomicFluorescenceSpectrometryZhangKaizhi,LuoTingting,GaoJinxiao,MengBai,JinBaoyuan,SuChaoshun(RuiliAgriculturalProductsQualityandSafetyInspectionStation,Ruili678600,Yunan,China)AbstractAbstract：Anovelpretreatmentmethodforarsenicandmercuryinsoilwasestablished,whichcanbeusedforsimultaneousdetermi‐nationofarsenicandmercuryinsoilbyatomicfluorescencespectrometry.Thesamplewasheatedanddigestedwithnitricacidandhydrochloricacid.Undertheoptimizedmeasuringconditions,thegraphitedigesterandthewaterbathheatingpretreatmentmethodswerecompared,therefore,thebestpretreatmentmethodforsimultaneousdeterminationofarsenicandmercuryinsoilbyatomicfluo‐rescencespectrometrywasfound.Thebestresultswereobtainedbywaterbathdigestionat80℃for150minandgraphitedigestionat80℃for180min.Arsenicaccuracyis91.8%~101%,RSDis0.20%~3.1%.Mercuryaccuracyis97.0%~98.5%,RSDis3.9%~5.8%,whichcanmeettherequirementsofdeterminationofarsenicandmercuryinsoil.Keywords：AtomicFluorescenceSpectrometry,soil,arsenic,mercury,determination砷、汞元素经食物链进入人体，可在人体内积蓄，对人体危害较大。通过测量土壤中的砷、汞含量，从源头上对农产品进行把关，对农产品质量安全具有重要的意义。砷、汞元素极易挥发，前处理较难，稍有不慎就会导致检测结果不准确，因此做好...
