Study on the Test Method of Recovery Rate for Environmental Test Chamber

Hai-ou ZHU; Gui-zhen ZHANG; Zhi-gang LU

doi:10.12326/j.2096-9694.2021033

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Study on the Test Method of Recovery Rate for Environmental Test Chamber
1.Nanjing Customs Industrial Products Testing Center，Nanjing 210001，Jiangsu，China
Vol. 36, Issue 1, Pages: 75-79(2022)
DOI： 10.12326/j.2096-9694.2021033

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朱海欧,张桂珍,卢志刚.环境测试舱回收率测试方法的研究[J].木材科学与技术,2022,36(01):75-79.

ZHU Hai-ou,ZHANG Gui-zhen,LU Zhi-gang.Study on the Test Method of Recovery Rate for Environmental Test Chamber[J].Chinese Journal of Wood Science and Technology,2022,36(01):75-79.
朱海欧,张桂珍,卢志刚.环境测试舱回收率测试方法的研究[J].木材科学与技术,2022,36(01):75-79. DOI： 10.12326/j.2096-9694.2021033.

ZHU Hai-ou,ZHANG Gui-zhen,LU Zhi-gang.Study on the Test Method of Recovery Rate for Environmental Test Chamber[J].Chinese Journal of Wood Science and Technology,2022,36(01):75-79. DOI： 10.12326/j.2096-9694.2021033.

摘要

采用液体标样注入、采样管先连续后间隔采样、自动热脱附仪（ATD）和气相色谱/质谱（GC/MS）联用分析、数据拟合积分计算等方法和技术，建立了挥发性有机化合物（VOCs）环境测试舱（简称VOCs舱）对8种VOCs（甲苯、乙烯基环己烯、对二甲苯、苯乙烯、2-乙基己醇、萘、4-苯基环己烯和正十二烷）的回收率测试方法。对比两台VOCs舱回收率的测试结果发现，对小分子化合物的回收率数据基本一致，均在83%~99%之间；但对大分子化合物的回收率数据存在明显差异，建议尽早开展制定VOCs舱回收率的测试标准。甲醛测试舱（简称甲醛舱）对8种VOCs的回收率测试结果远低于VOCs舱，尤其是萘和4-苯基环己烯，其回收率小于11%，建议在采用改造甲醛舱进行VOCs测试时多关注甲醛舱对于VOCs回收率的影响。

Abstract

The recovery rate of eight volatile organic compounds (VOCs), including Toluene, Vinylcyclohexene, p-Xylene, Styrene, 2-Ethylhexyl Alcohol, Naphthalene, 4-Phenylcyclohexene and n-Dodecane, was determined in the environmental test chamber by the liquid standard injection, continuous sampling and interval sampling, automatic thermal desorption (ATD) and gas chromatography/mass spectrometry (GC/MS) analysis, and integral area calculation. The comparison of the recovery rate of the two VOCs environmental test chambers showed that the recovery rate of small molecular compounds were consistent, ranging from 83% to 99%; however, there were significant differences in the recovery rate of large molecular compounds. It was recommended that it was urgent to develop the test method standards of VOCs for the test chamber recovery rate. The recovery rate of eight VOCs in the formaldehyde chamber was much lower than that in the environmental test chamber, especially for Naphthalene and 4-Phenylcyclohexene, for which the recovery rates were less than 11%. It was recommended to pay more attention to the impact of the formaldehyde chamber on the recovery rate of the VOCs when the formaldehyde chamber was modified for VOCs testing.

关键词

环境测试舱回收率挥发性有机化合物（VOCs）

Keywords

environmental test chamberrecovery ratevolatile organic compounds (VOCs)

references

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