甲醇中甲苯溶液标准物质的研制
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摘要
介绍甲醇中甲苯溶液标准物质的制备方法。以重量–容量法制备甲醇中甲苯溶液标准物质,以计算值作为标准物质的特性量值。采用气相色谱法、卡尔·费休法、电感耦合等离子体质谱法等分别对原料中的主成分、金属元素及水分含量准确定量。方差分析和线性拟合结果表明,该溶液标准物质具有良好的均匀性和稳定性。甲醇中甲苯溶液标准物质特性值为996.73μg/mL,相对扩展不确定度为2%(k=2)。
The preparation method of toluene in methanol solution reference material was developed. Toluene in methanol solution reference material was prepared by weighting–volumetric method, and the calculated value was de?ned as the charecteristic value. The contents of toluene, metal impurities and water content in raw material were respectively determined by gas chromatography, Karl Fischer and inductively couple plasma mass spectrometry. The results of variance analysis and linear regression showed that the reference materials were homogeneous and stable. The mass concentration value of this developed toluene in methanol reference material was 996.73 μg/mL with the relative expanded uncertainty of 2%(k=2).
The preparation method of toluene in methanol solution reference material was developed. Toluene in methanol solution reference material was prepared by weighting–volumetric method, and the calculated value was de?ned as the charecteristic value. The contents of toluene, metal impurities and water content in raw material were respectively determined by gas chromatography, Karl Fischer and inductively couple plasma mass spectrometry. The results of variance analysis and linear regression showed that the reference materials were homogeneous and stable. The mass concentration value of this developed toluene in methanol reference material was 996.73 μg/mL with the relative expanded uncertainty of 2%(k=2).
引文
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[4]GB 3838-2002地表水环境质量标准[S].
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[14]张苏敏,张毅,代妍,等.甲苯中苯标准物质研制[J].化学试剂,2012,34(3):229-231.
[15]CNAS-GL 29标准物质/标准样品定值的一般原则和统计方法[S].
[16]杨嘉伟,代妍,白花,等.异辛烷中八氟萘溶液标准物质的研制[J].化学试剂,2014,36(12):1 101-1 103.
[17]王星,潘义,张鹏辉,等.粘度标准物质研制[J].中国测试,2015,41(5):5-8.
[18]JJG 1343-2012标准物质定值的通用原则及统计学原理[S].
[19]JJF 1059-1999测量不确定度评定与表示[S].
[20]荀其宁,张文申,侯倩倩,等.液相色谱仪检定用甲醇中胆固醇标准物质的研制[J].化学分析计量,2015,24(2):13-15.
[21]JJF 1059.1-2012测量不确定度评定与表示[S].
[2]ESTEVE-TURRILLAS F A,ARMENTA S,GARRIGUES S,et al.Headspace-mass spectrometry determination of benzene,toluene and mixture of ethylbenzene and xylene isomers in soil samples using chemonetrics[J].Anal Chim Acta,2007,587:89-96.
[3]杨建涛,朱琨,马娟,等.土壤中苯系物在表面活性剂溶液中的解吸研究[J].农业环境科学学报,2003,22(5):620-623.
[4]GB 3838-2002地表水环境质量标准[S].
[5]GB 8978-2017污水综合排放标准[S].
[6]GB/T 18883-2002室内空气质量标准[S].
[7]吴鹏鸣.环境监测原理与应用[M].北京:化学工业出版社,1991.
[8]封跃鹏,梁洪,彭鸿俊.五氯酚标准样品的研制[J].中国环境监测,1998,14(5):17-20.
[9]陈明,李少霞,姚敬,等.化学测定方法吹扫捕集-气质联用法测定涂料中的苯系物[J].中国卫生检验杂志,2010,20(12):3 232-3 233.
[10]梁向晖,毛秋平,钟伟强.利用GC-MS和NMR对未知有机化合物定性分析[J].分析仪器,2017(3):77-82.
[11]王丹丹.气相色谱法测定甘宝素中的甲苯残留量[J].化学分析计量,2014,23(2):78-79.
[12]李俊飞,李景喜,陈军辉,等.甲苯中微量金属元素测定及特征分析[J].分析测试学报,2012,31(2):164-168.
[13]王菊香,刘洁,韩晓.卡尔费休容量滴定法测定混胺燃料中水含量[J].化学分析计量,2013,22(1):66-68.
[14]张苏敏,张毅,代妍,等.甲苯中苯标准物质研制[J].化学试剂,2012,34(3):229-231.
[15]CNAS-GL 29标准物质/标准样品定值的一般原则和统计方法[S].
[16]杨嘉伟,代妍,白花,等.异辛烷中八氟萘溶液标准物质的研制[J].化学试剂,2014,36(12):1 101-1 103.
[17]王星,潘义,张鹏辉,等.粘度标准物质研制[J].中国测试,2015,41(5):5-8.
[18]JJG 1343-2012标准物质定值的通用原则及统计学原理[S].
[19]JJF 1059-1999测量不确定度评定与表示[S].
[20]荀其宁,张文申,侯倩倩,等.液相色谱仪检定用甲醇中胆固醇标准物质的研制[J].化学分析计量,2015,24(2):13-15.
[21]JJF 1059.1-2012测量不确定度评定与表示[S].
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