The combined effects of sampling parameters on the sorbent tube sampling of phthalates in air

The adsorption properties of various sorbent materials were investigated to assess the factors affecting biases in the sorbent tube (ST) sampling of airborne phthalates. The recovery of phthalates was assessed critically in relation to four key sampling parameters: (1) three types of sorbent materia...

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Bibliographic Details
Published in:Scientific reports 2017-03, Vol.7 (1), p.45677-45677, Article 45677
Main Authors: Jo, Sang-Hee, Kim, Ki-Hyun, Kwon, Kyenghee
Format: Article
Language:English
Subjects:
704/172/169/895
704/172/4081
Adsorption
Calibration
Chromatography
Flow rates
Gas chromatography
Glass wool
Humanities and Social Sciences
Investigations
Mass spectrometry
Mass spectroscopy
Molecular weight
multidisciplinary
PCB
Phthalate esters
Phthalates
Pollutants
Polychlorinated biphenyls
Quartz
Sampling
Science
Scientific imaging
VOCs
Volatile organic compounds
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Summary:The adsorption properties of various sorbent materials were investigated to assess the factors affecting biases in the sorbent tube (ST) sampling of airborne phthalates. The recovery of phthalates was assessed critically in relation to four key sampling parameters: (1) three types of sorbent materials (quartz wool (QW), glass wool (GW), and quartz wool plus Tenax TA (QWTN)), (2) the concentration level of phthalate standards, (3) purge flow rate, and (4) purge volume for analysis based on a ‘sorbent tube-thermal desorption-gas chromatography-mass spectrometry (ST-TD-GC-MS)’ system. Among these parameters, the type of ST was the most influential in determining the recovery of phthalates. For a given ST type, the recovery of phthalates tends to improve with increases in the concentration level of standards. In case of QW and QWTN tubes, the breakthrough of phthalates was not observed up to the maximum purge volume (100 L) tested in this work; however, in case of GW, the recovery decreased drastically to 60% even at a purge volume of 1 L for low molecular weight phthalates. The results of our study demonstrate that accurate analysis of airborne phthalates can be achieved through proper control of key sampling parameters, particularly the choice of sorbent material.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep45677