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《电感耦合等离子体发射光谱法测定载金炭中铜铁钙镁.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2012年4月岩矿测试Vo1.31.No.2April2012R0CKANDMINERALANALYSIS263~267文章编号:0254—5357(2012)02—0263—05电感耦合等离子体发射光谱法测定载金炭中铜铁钙镁夏珍珠(紫金矿业集团股份有限公司,福建龙岩364200)摘要:样品经灼烧灰化后,用盐酸、硝酸溶解残渣,在稀王水介质中用电感耦合等离子体发射光谱法测定载金炭中的铜、铁、钙和镁。试验了烘样温度、灼烧坩埚的材质、温度和时间、测定介质及共存元素干扰等因素的影响。结果表明,载金炭的烘样温度宜选择1
2、50℃,石英材质的坩埚耐侵蚀性高于瓷坩埚,且空白值低、结果稳定,载金炭中共存元素不干扰铜、铁、钙和镁的测定。该方法用于样品的分析,相对标准偏差(RSD)为0.78%~2.69%,加标回收率为97.1%~104.5%,各元素的测定值与火焰原子吸收光谱法的结果基本一致。方法简便,实用性强。关键词:载金炭;铜;铁;钙;镁;电感耦合等离子体发射光谱法中图分类号:TF831;0657.31文献标识码:BDeterminationofCopper,Iron,CalciumandMagnesiuminGold-Loaded
3、CarbonbyInductivelyCoupledPlasma-AtomicEmissionSpectrometryXlAZhen.zhu(ZijinMiningGroupCooperation,Ltd.,Longyan364200,China)Abstract:ThisarticleintroducesamethodofInductivelyCoupledPlasma—AtomicEmissionSpectrometry(ICP—AES)forthedeterminationofcopper,iron,c
4、alciumandmagnesiumingold—loadedcarbon.Afterincineration,theresiduaofthesampleweredissolvedbyHC1andHN03,andthenthesolutionindilutedaquaregiawasdeterminedbyICP—AES.Factorssuchassampledryingtemperature,thematerialofthecrucible,incinerationtemperature,incinerat
5、iontime,andmediafortestingandtheinterferenceofthecoexistingelementswasstudiedindetailOilhowtheyinfluencetheresult.Theresultsshowthatthepropersampledryingtemperatureforthegold—loadedcarbonwas150~C.Theinoxidabilityofthequa~zpotishigherthanthatofceramiccrucibl
6、e,anditalsohasalowerblank,andstableresults.Throughaninterferencetest,thecoexistingelementsinthegold—loadedcarbondidnotinterferewiththedeterminationofcopper,iron,calciumandmagnesium.Thismethodwasappliedtotheanalysisofsampleswiththerelativestandarddeviations(
7、RSDs)forCu,Fe,CaandMgintherangeof0.84%一1.45%,0.80%一1.44%,0.78%一2.69%and0.96%一2.61%,respectively.StandardadditionrecoveriesforCu,Fe,CaandMgwereintherangeof98.5%一100.9%,99.4%一102.0%,97.1%一102.5%and100.7%一104.5%.repectively.Themethodwassimple.andsuitableforsim
8、ultaneousdeterminationofmultipleelements.Keywords:gold—loadedcarbon;copper;iron;calcium;magnesium;inductivelycoupledplasma-atomicemissionspectrometry收稿日期:2012一o1—09;接受日期:2012—02—20作者简介:夏珍珠,高级工程师,主要从事分析
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