广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2013年
24期
114-117
,共4页
不确定度%微库仑%氯%汽油
不確定度%微庫崙%氯%汽油
불학정도%미고륜%록%기유
uncertainty%microcoulometry%chloride%gasoline
通过分析微库仑法测定汽油中氯含量操作过程,对氯含量测定结果的不确定度进行了评定。不确定度主要来源于从仪器测得样品中的氯含量的不确定度;样品密度的不确定度以及回收率的不确定度。分析和量化各不确定度分量,发现回收率对不确定度的贡献最大。当汽油样品氯含量为16.0 mg/kg时,其扩展不确定度为1.1 mg/kg( k=2)。
通過分析微庫崙法測定汽油中氯含量操作過程,對氯含量測定結果的不確定度進行瞭評定。不確定度主要來源于從儀器測得樣品中的氯含量的不確定度;樣品密度的不確定度以及迴收率的不確定度。分析和量化各不確定度分量,髮現迴收率對不確定度的貢獻最大。噹汽油樣品氯含量為16.0 mg/kg時,其擴展不確定度為1.1 mg/kg( k=2)。
통과분석미고륜법측정기유중록함량조작과정,대록함량측정결과적불학정도진행료평정。불학정도주요래원우종의기측득양품중적록함량적불학정도;양품밀도적불학정도이급회수솔적불학정도。분석화양화각불학정도분량,발현회수솔대불학정도적공헌최대。당기유양품록함량위16.0 mg/kg시,기확전불학정도위1.1 mg/kg( k=2)。
The measurement uncertainty of chloride in gasoline by microcoulometry was evaluated based on the analysis of the operation process.The main sources of the uncertainty were the sample concentration of chloride measured by the instrument, the density of the sample and the measurement recovery.Based on analysis and quantification of uncertainty components, it was found that the uncertainty was mainly originated from measurement recovery.The chloridne content in a gasoline sample was 16.0 mg/kg while the expanded uncertainty was 1.1 mg/kg( k=2).