第32卷,第7期2023年7月化学分析计量CHEMICALANALYSISANDMETERAGEVol.32,No.7Jul.2023电感耦合等离子体发射光谱法测定可溶性镁合金中高含量镍张喜林,钱亚锋,孙志阳,吴洋(鹤壁市产品质量检验检测中心,河南鹤壁458030)摘要建立电感耦合等离子体发射光谱法测定可溶性镁合金中高含量镍元素含量的分析方法。采用10mL盐酸溶液(1+1)溶解可溶性镁合金样品,选择Ni216.556nm为分析谱线,采用基体匹配法建立校正曲线,通过基体匹配消除基体干扰,使用电感耦合等离子体发射光谱仪测定样品溶液中镍含量。镍元素质量分数在0.5%~5%范围内与发射光谱强度线性关系良好,相关系数为0.9999。样品加标平均回收率为99.0%~101.7%,测定结果的相对标准偏差为0.70%~1.15%(n=6)。该方法可用于可溶性镁合金中高含量镍元素的测定。关键词电感耦合等离子体发射光谱法;可溶性镁合金;镍中图分类号:O657.3文献标识码:A文章编号:1008-6145(2023)07-0017-04DeterminationofhighcontentnickelinsolublemagnesiumalloysbyinductivelycoupledplasmaatomicemissionspectrometryZHANGXilin,QIANYafeng,SUNZhiyang,WUYang(HebiProductQualityInspectionandTestingCenter,Hebi458030,China)AbstractAnanalyticalmethodforthedeterminationofnickelwithhighcontentinsolublemagnesiumalloysbyinductivelycoupledplasmaatomicemissionspectrometrywasestablished.Thesolublemagnesiumalloysamplewasdissolvedwith10mLhydrochloricacidsolution(1+1),Ni216.556nmwasselectedastheanalyticalspectralline,thecalibrationcurvewasestablishedbymatrixmatchingmethod,matrixinterferencewaseliminatedbymatrixmatching,thecontentofnickelinthesamplesolutionwasdeterminedbyinductivelycoupledplasmaatomicemissionspectrometer.Thelinearrelationshipbetweentheemissionspectrumintensityandthemassfractionofnickelwasgoodintherangeof0.5%-5%,thecorrelationcoefficientwas0.9999.Theaveragerecoveryrateofspikingwas99.0%-101.7%,andtherelativestandarddeviationofthedeterminationresultswas0.70%-1.15%(n=6).Themethodcanbeusedforthedeterminationofhighcontentnickelinsolublemagnesiumalloys.Keywordsinductivelycoupledplasmaemissionspectrometry;solublemagnesiumalloy;nickel镁合金是以镁为基体加入其它元素组成的合金,其密度小,比强度高,散热好,承受冲击...