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- W4316022496 abstract "Abstract A gas certified reference materials containing 30 volatile organic compounds (VOCs) including alkane, alkene and aromatic hydrocarbons in nitrogen at 1 µmol/mol level were developed using gravimetric method with four-step dilution and home-made liquid gasifying and filling apparatus. All components were analyzed using gas chromatograph with hydrogen flame ionization detector (GC-FID) and the repeatability of the analytical method was between 0.2-1.0%. Three types of cylinders were involved to test the adsorption/desorption/reaction of components on the inner wall and domestic treated cylinder were chosen for preparation. The results of within-homogeneity demonstrated that all the components remain stable above 2MPa. Furthermore, no significant change of the concentration was tested at least 16 months. Meanwhile, low temperature freezing test showed that extreme low temperature in transportation had no effect on the concentration of the gas standard material. Finally, the relative expended uncertainty ( k = 2) of 30 components were evaluated using gravimetric method which were calculated as 2.2%~4.3% ." @default.
- W4316022496 created "2023-01-14" @default.
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- W4316022496 date "2023-01-13" @default.
- W4316022496 modified "2023-10-12" @default.
- W4316022496 title "Development of gas standard reference material containing thirty volatile organic compounds at 1μmol/mol in nitrogen" @default.
- W4316022496 doi "https://doi.org/10.21203/rs.3.rs-2362095/v1" @default.
- W4316022496 hasPublicationYear "2023" @default.
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