Development of benzene, toluene, ethylbenzene and xylenes certified gaseous reference materials

被引：1

作者：

Brum, M. C. ^{[1
]}

Sobrinho, D. C. G. ^{[1
]}

Fagundes, F. A. ^{[1
]}

Oudwater, R. J. ^{[1
]}

Augusto, C. R. ^{[1
]}

机构：

[1] Inst Nacl Metrol Qualidade & Tecnol Inmetro, Div Metrol Quim Dquim, BR-25250020 Xerem, RJ, Brazil

来源：

8TH BRAZILIAN CONGRESS ON METROLOGY (METROLOGIA 2015) | 2016年 / 733卷

关键词：

D O I：

10.1088/1742-6596/733/1/012035

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The work describes the production of certified gaseous reference materials of benzene, toluene, ethylbenzene and xylenes (BTEX) in nitrogen from the gravimetric production up to the long term stability tests followed by the certifying step. The uncertainty in the amount fractions of the compounds in these mixtures was approximately 4 % (relative) for the range studied from 2 to 16 mu mol/mol. Also the adsorption of the BTEX on the cylinder surface and the tubing were investigated as potential uncertainty source.

引用

页数：5

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