PMID- 31642277
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20191023
LR  - 20200108
IS  - 1872-2059 (Electronic)
IS  - 1000-8713 (Linking)
VI  - 37
IP  - 11
DP  - 2019 Nov 8
TI  - [Determination of 67 volatile organic compounds in ambient air using thermal 
      desorption-gas chromatography-mass spectrometry].
PG  - 1228-1234
LID - 10.3724/SP.J.1123.2019.04043 [doi]
AB  - A method based on thermal desorption-gas chromatography-mass spectrometry 
      (TD-GC-MS) was developed for the simultaneous analysis of 67 volatile organic 
      compounds (VOCs) in ambient air. In this study, the adsorption effects of five 
      kinds of stainless steel sorbent tubes for 78 VOCs were compared. The results 
      revealed that a multisorbent bed with Carbograph 1TD and Tenax TA shows good 
      adsorption effect for the 67 target compounds. The breakthrough rates of all the 
      target compounds were less than 10% when high-purity helium gas was continuously 
      purged for 45 min at 30 mL/min. The analytes included aromatic hydrocarbons, 
      aliphatic hydrocarbons, halogenated hydrocarbons, and oxygen-containing volatile 
      organic compounds. The thermal desorption conditions for the determination of the 
      target substances were optimized. In the range 5-100 ng, the chromatographic 
      response of the target compounds had a good linear relationship with their 
      corresponding amounts, and the correlation coefficient (r) was between 1.0000 and 
      0.9977. The method detection limits (MDLs) were 0.3-2.4 ng or 0.3-2.4 mug/m(3), as 
      calculated by a 1 L sampling volume. The method was validated by means of 
      recovery experiments (n=7) with the addition of 20 ng standard samples. The 
      recoveries of all the target compounds were in the range of 81.6%-114.9%, and 
      their relative standard deviations (RSDs) were in the range of 1.2%-10.2%. The 
      VOCs present in the air in a carriage were detected using this method. The 19 
      target compounds included esters, halogenated alkanes, halogenated olefins, and 
      aromatic substances, whose concentrations ranged from 1.1 to 84.1 mug/m(3). These 
      results indicated that our method is accurate, reliable, and sensitive, and can 
      allow for accurate quantification of the 67 target pollutants in ambient air.
FAU - Zhu, Xiaoping
AU  - Zhu X
AD  - School of Environmental and Chemical Engineering, Dalian Jiaotong University, 
      Dalian 116028, China.
AD  - Chinese Academy of Sciences(CAS) Key Laboratory of Separation Science for 
      Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of 
      Sciences, Dalian 116023, China.
FAU - Ma, Huilian
AU  - Ma H
AD  - Chinese Academy of Sciences(CAS) Key Laboratory of Separation Science for 
      Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of 
      Sciences, Dalian 116023, China.
FAU - Zhu, Xiuhua
AU  - Zhu X
AD  - School of Environmental and Chemical Engineering, Dalian Jiaotong University, 
      Dalian 116028, China.
FAU - Chen, Jiping
AU  - Chen J
AD  - Chinese Academy of Sciences(CAS) Key Laboratory of Separation Science for 
      Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of 
      Sciences, Dalian 116023, China.
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
SB  - IM
OTO - NOTNLM
OT  - ambient air
OT  - breakthrough
OT  - sorbent tube
OT  - thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS)
OT  - volatile organic compounds (VOCs)
EDAT- 2019/10/24 06:00
MHDA- 2019/10/24 06:01
CRDT- 2019/10/24 06:00
PHST- 2019/10/24 06:00 [entrez]
PHST- 2019/10/24 06:00 [pubmed]
PHST- 2019/10/24 06:01 [medline]
AID - 10.3724/SP.J.1123.2019.04043 [doi]
PST - ppublish
SO  - Se Pu. 2019 Nov 8;37(11):1228-1234. doi: 10.3724/SP.J.1123.2019.04043.