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Citation
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HERO ID
3864334
Reference Type
Journal Article
Title
Multi-channel silicone rubber traps as denuders for gas-particle partitioning of aerosols from semi-volatile organic compounds
Author(s)
Kohlmeier, V; Dragan, GC; Karg, EW; Schnelle-Kreis, J; Breuer, D; Forbes, PBC; Rohwer, ER; Zimmermann, R
Year
2017
Is Peer Reviewed?
Yes
Journal
Environmental Science: Processes & Impacts
ISSN:
2050-7887
EISSN:
2050-7895
Volume
19
Issue
5
Page Numbers
676-686
Language
English
PMID
28378867
DOI
10.1039/c7em00044h
Web of Science Id
WOS:000402045700004
Abstract
During many measurements it is important to account for possible changes in the gas-particle distribution of aerosols containing semi-volatile organic compounds (SVOCs). If denuders are combined with currently used personal air samplers, a simultaneous differential sampling of the gas and particle phase is possible. Here we analysed the transmission efficiency of denuders based on multi-channel silicone rubber traps (setup: 9 cm long glass liner (ID 4 mm), containing 22 parallel silicone rubber tubes (55 mm long, ID 0.3 mm, OD 0.5 mm)) with polystyrene latex (PSL) particles for different scenarios. n-Hexadecane, dimethyl phthalate and diethylene glycol gases were used to measure the time-dependent gas phase collection efficiency of a denuder. Additionally, the evaporation of n-hexadecane aerosol particles passing through the denuders was investigated. Our results showed high transmission efficiencies from 91 to 100% (variation coefficients 3.69-9.65%) for the denuders operated vertically at a flow rate of 0.5 l min(-1). With regard to the gas phase collection efficiency, nonpolar n-hexadecane gas was trapped with higher efficiency (87% after 22 h) than dimethyl phthalate gas (27% after 22 h), while for highly polar diethylene glycol the gas phase collection efficiency was 50% after 2 h. Regarding the evaporation of aerosol particles, smaller particles and lower flow rates led to higher particle volume reduction inside the denuders. In conclusion, the tested denuders are suitable for determining the gas-particle partitioning of SVOC aerosols of nonpolar substances and show above 90% transmission for all tested particle sizes.
Tags
IRIS
•
Dibutyl Phthalate (DBP)
Database Searches
LitSearch Jan 2017 - July 2017
Pubmed
•
Phthalates – Targeted Search for Epidemiological Studies
Source – all searches
WOS
Excluded
Source - August 2017 Update (Private)
WOS
Source - August 2018 Update
WOS
Level 1 Screen - Title & Abstract
Excluded
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