简介:本文对国家标准方法酸溶解-EDTA滴定法测定铅精矿中铅量的测量不确定度来源进行了分析,对Na2EDTA标准溶液的滴定度、滴定体积、不溶渣和滤液中铅量的测定、试样的质量、测试过程随机误差等不确定度分量进行了分析和量化,求得合成标准不确定度和扩展不确定度分别为0.11%和0.22%。
简介:Inductivelycoupledplasmaatomicemissionspectroscopy(ICP-AES),pioneeredbyVAFasselandSGreenfieldwiththeinspirationfromReed,isoneofthemostexcitingdevelopmentsinanalyticalinstrumentationsince1960’s.Itcandetermineabout70elementsontheperiodictablewithbetterprecisionandequalorbettersensitivitythanthatobtainedwithflameatomicabsorptionspectrometry(FAAS).Inaddition,certain"difficult"elementsforFAAS,suchasAl,B,C,P,SandTi,etc.,canbeeasilydeterminedbyICP.TheICPisnotonlyaveryusefulexcitatiomsourceforAES,butalsoaveryusefulsourceforatomizationinatomicfluorescencespectrometry(AFS)andforionizationinatomicmassspectrometry(MS).Thislecturedeals