FAAS法测定桂郁金中镁的不确定度评定  

Uncertainty Evaluation on Determination of Magnesium in Guiyujin by FAAS

作　　者：陈福北[1] 张利敏 

机构地区：[1]广西工业职业技术学院石油与化学工程系,广西南宁530001 [2]通标标准技术服务(上海)有限公司矿产部,上海200000

出　　处：《化工技术与开发》2012年第6期33-35,4,共4页Technology & Development of Chemical Industry

基　　金：广西教育厅科研项目(200911LX502)

摘　　要：桂郁金(Guiyujin)为姜黄属植物广西莪术(Curcuma kwangsiensis S.G.Lee et C.F.Liang)的块根,据火焰原子吸收光度法(FAAS)测定结果,桂郁金中富含Ca、Mg、Fe。本文对FAAS法测定镁的不确定度进行了分析,评估了各参数的标准不确定度,通过评估,得出影响镁含量测定不确定度的主要因素是标准曲线拟合的不确定度,其它部分的不确定度对测量结果的不确定度影响要小些。The analytical results showed that Guiyujin was rich in Ca,Mg,Fe. In the paper, The uncertainty measurement of the Magnesium in Guiyujin samples by flame atomic absorption spectrophotometry was evaluate, the sources of the uncertainty were discussed and calculated. Results confirmed that the factor mostly affecting the determination uncertainty of Magnesium was the uncertainty of standard fitting curves in this method, and the other uncertainty components were relatively small.

关 键 词：郁金 镁 不确定度评定 

分 类 号：O657.31[理学—分析化学] O657.63[理学—化学]