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- W2380878049 abstract "In order to evaluate short-term stability of opened stocks of certified reference materials(CRMs) in the analysis of volatile organic compounds(VOCs),CRMs LVOC-1RPM and SS-524RPM(including 54 VOCs and 2 surrogates in methanol,respectively,manufactured by ChemService Inc.,USA) the stocks were transferred into 2 mL brown bottles equipped with Teflon-lined screw-caps,stored at-18℃ and protected from light.The variation of the CRMs' compounds with storage time was tested by Gas Chromatography-Mass Spectrometry(GC-MS).The results showed that the standard deviations of all the compounds of the 2 CRMs ranged from 12-60 mg/L,the maximum relative standard deviation is 2.97%(n=5) and the maximum relative uncertainty is below 5.39%.In the 95% confidence interval,the chi-squared test(χ2-test) and uncertainty estimation show that precision and accuracy of the measurements is acceptable.In addition,the measurement deviation is not significant when the range of compounds of the CRMs are within(2000±128) mg/L.The experimental data also shows that the preservation period of the opened stocks of LVOC-1RPM CRMs is not more than 65 days and that of the opened stocks of SS-524RPM CRMs is not less than 65 days within the period of validity of the CRMs." @default.
- W2380878049 created "2016-06-24" @default.
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- W2380878049 date "2012-01-01" @default.
- W2380878049 modified "2023-10-02" @default.
- W2380878049 title "The Evaluation of Short-term Stability of Opened Stocks of Certified Reference Materials in the Analysis of Volatile Organic Compounds" @default.
- W2380878049 hasPublicationYear "2012" @default.
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