黑龙江环境通报
黑龍江環境通報
흑룡강배경통보
Heilongjiang Environmental Journal
2015年
3期
31-34
,共4页
靛酚蓝分光光度法%公共场所空气%氨%不确定度%评定
靛酚藍分光光度法%公共場所空氣%氨%不確定度%評定
전분람분광광도법%공공장소공기%안%불학정도%평정
Indophenol blue spectrophotometry%Air in public places%Ammonia%Uncertainty%Assessment
分析了应用靛酚蓝分光光度法(GB/T18204.25-2000)测试公共场所空气氨过程中不确定度的影响因素,其主要来源为标准溶液、标准曲线拟合、样品重复测定、分光光度计、取吸收液体积和采集气样标况体积这六部分引入的不确定度.相对合成不确定度为4.89%;其中采样部分引起的相对不确定度为1.2%;吸收液中待测物质量引起的相对不确定度为4.74%.最大的相对不确定度分量,是标准曲线拟合引起的相对不确定度为4.17%;其次是样品重复测定引入不确定度为1.7%.本次测量结果为:0.346±0.034mg/m3,k=2.(约95%置信水平).
分析瞭應用靛酚藍分光光度法(GB/T18204.25-2000)測試公共場所空氣氨過程中不確定度的影響因素,其主要來源為標準溶液、標準麯線擬閤、樣品重複測定、分光光度計、取吸收液體積和採集氣樣標況體積這六部分引入的不確定度.相對閤成不確定度為4.89%;其中採樣部分引起的相對不確定度為1.2%;吸收液中待測物質量引起的相對不確定度為4.74%.最大的相對不確定度分量,是標準麯線擬閤引起的相對不確定度為4.17%;其次是樣品重複測定引入不確定度為1.7%.本次測量結果為:0.346±0.034mg/m3,k=2.(約95%置信水平).
분석료응용전분람분광광도법(GB/T18204.25-2000)측시공공장소공기안과정중불학정도적영향인소,기주요래원위표준용액、표준곡선의합、양품중복측정、분광광도계、취흡수액체적화채집기양표황체적저륙부분인입적불학정도.상대합성불학정도위4.89%;기중채양부분인기적상대불학정도위1.2%;흡수액중대측물질량인기적상대불학정도위4.74%.최대적상대불학정도분량,시표준곡선의합인기적상대불학정도위4.17%;기차시양품중복측정인입불학정도위1.7%.본차측량결과위:0.346±0.034mg/m3,k=2.(약95%치신수평).
The paper analyses influnce factors of uncertainty in the process of determining ammonia in public places with indophenol blue spectrophotometry GB/T18204.25-2000. The main influnce factors are standard solution,standard curve fitting,sample repeated measurements,spectroscopic photometer,absorption liquid volume and standard volume of gas samples. Relative combined uncertainty is 4.89%, where the the relative uncertainty caused by sampling part is 1.2%and the relative uncertainty caused by absorption of liquid analyte mass is 4.74%. The largest relative uncertainty component is caused by the relative standard curve fitting of 4.17%;followed by repeated measurements of sample introduction uncertainty of 1.7%. The measurement result is:0.346 ± 0.034mg/m3,k=2. (Approximately 95%confidence level) .
