红外分光光度法测定污泥中矿物油的不确定度评定
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摘要
分析探讨了红外红外分光光度法测定污泥中矿物油含量不确定度的影响因素,并对其不确定度分量进行了评定,计算得到相对标准不确定度urel(X)为0. 0187,污泥样品中矿物油含量的标准不确定度u(X)为1. 0450mg/L,扩展不确定度U为2. 0899mg/L(k=2),所测污泥样品中的矿物油的含量为X=55. 83±2. 0899mg/L(k=2)。扩展不确定度贡献较大的主要分量是样品重复测定和配置三波长校准溶液引入的标准不确定度分量。
The factors affecting the uncertainty of determination of mineral oil content in sludge by infrared spectrophotometry were analyzed in this study. And the uncertainty components were also assessed. The relative standard uncertainty urel( X) was 0. 0187. The standard uncertainty of mineral oil concentrations in sludge samples u( X) and expanded uncertainty U were 1. 0450 mg/L and 2. 0899 mg/L( k = 2),respectively. The standard mineral oil concentrations in sludge samples were expressed as X = 55. 83 ± 2. 0899 mg/L( k = 2). The results showed that the repeated determination of samples and the preparation of three wavelength calibration solutions were the main sources of the measurement uncertainty.
The factors affecting the uncertainty of determination of mineral oil content in sludge by infrared spectrophotometry were analyzed in this study. And the uncertainty components were also assessed. The relative standard uncertainty urel( X) was 0. 0187. The standard uncertainty of mineral oil concentrations in sludge samples u( X) and expanded uncertainty U were 1. 0450 mg/L and 2. 0899 mg/L( k = 2),respectively. The standard mineral oil concentrations in sludge samples were expressed as X = 55. 83 ± 2. 0899 mg/L( k = 2). The results showed that the repeated determination of samples and the preparation of three wavelength calibration solutions were the main sources of the measurement uncertainty.
引文
[1]HJ637-2012《石油类和动植物油类的测定红外分光光度法》[S].
[2]水和废水监测分析方法[M].国家环境保护总局.北京:中国环境科学出版社,2007.
[3]GB/T16488-1996《水质石油类和动植物油的测定红外光度法》[S].
[4]CJ/T211-2005《城市污水处理厂污泥检验方法》[S].
[5]武彦文,王颖,李冰宁,等.定量分析食品中的矿物油污染物[J].食品安全质量检测学报,2015(6):2145~2150.
[6]郑健,周建光,陈焕发,等.水体和土壤中矿物油的常用测量方法与仪器[J].分析仪器,2002,(3):1~9.
[7]外力,司马义,艾合买提·依布拉音.红外分光测油仪测量标准样品石油类不确定度的评定研究[J].环境科学与管理,2016,41(1):127~131.
[8]周海燕,刘国华,胡钦奎.红外分光测油仪测定水中油的不确定度评定.民营科技,2010,9:12.
[9]任松,张丽旭,陈卫卫,等.东海近海水质油类测定中的不确定度探讨.海洋环境科学,2005,24(4):67~70.
[10]洪泓.红外分光光度法测定水中动植物油的不确定度评定.环境科学与管理,2009,34(9):99~101.
[11]王立宛,刘佳,何丽梅.红外光度法测定水中油类的不确定度.广东化工,42(8):169,181.
[12]张令莉. JK-951型红外测油仪示值误差的不确定度分析.黑龙江环境通报,2016,40(4):81~82,90.
[13]JJF1059-1999《测量不确定度评定与表示》[S].国家质量技术监督局.
[14]CNAS-1 GL06:2006《化学分析中不确定度的评估指南》[M].中国合格评定国家认可委员会.中国计量出版社,2006.
[15]王秀平,李明亮,张明秀,等.原子荧光光谱法测定农田土壤中汞的不确定度评定研究.农产品质量与安全,2018,3:71~75.
[2]水和废水监测分析方法[M].国家环境保护总局.北京:中国环境科学出版社,2007.
[3]GB/T16488-1996《水质石油类和动植物油的测定红外光度法》[S].
[4]CJ/T211-2005《城市污水处理厂污泥检验方法》[S].
[5]武彦文,王颖,李冰宁,等.定量分析食品中的矿物油污染物[J].食品安全质量检测学报,2015(6):2145~2150.
[6]郑健,周建光,陈焕发,等.水体和土壤中矿物油的常用测量方法与仪器[J].分析仪器,2002,(3):1~9.
[7]外力,司马义,艾合买提·依布拉音.红外分光测油仪测量标准样品石油类不确定度的评定研究[J].环境科学与管理,2016,41(1):127~131.
[8]周海燕,刘国华,胡钦奎.红外分光测油仪测定水中油的不确定度评定.民营科技,2010,9:12.
[9]任松,张丽旭,陈卫卫,等.东海近海水质油类测定中的不确定度探讨.海洋环境科学,2005,24(4):67~70.
[10]洪泓.红外分光光度法测定水中动植物油的不确定度评定.环境科学与管理,2009,34(9):99~101.
[11]王立宛,刘佳,何丽梅.红外光度法测定水中油类的不确定度.广东化工,42(8):169,181.
[12]张令莉. JK-951型红外测油仪示值误差的不确定度分析.黑龙江环境通报,2016,40(4):81~82,90.
[13]JJF1059-1999《测量不确定度评定与表示》[S].国家质量技术监督局.
[14]CNAS-1 GL06:2006《化学分析中不确定度的评估指南》[M].中国合格评定国家认可委员会.中国计量出版社,2006.
[15]王秀平,李明亮,张明秀,等.原子荧光光谱法测定农田土壤中汞的不确定度评定研究.农产品质量与安全,2018,3:71~75.
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