NDLI: Development of a sampling method for the simultaneous monitoring of straight-chain alkanes , straight-chain saturated carbonyl compounds and monoterpenes in remote areas

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Detournay, Anaïs Sauvage, Stéphane Locoge, Nadine Gaudion, Vincent Leonardis, Thierry Fronval, Isabelle Kaluzny, Pascal Galloo, Jean-Claude
Description	Country affiliation: France Author Affiliation: Detournay A ( Université de Lille Nord de France, F-59000 Lille, France.)
Abstract	Studies have shown that biogenic compounds, long chain secondary compounds and long lifetime anthropogenic compounds are involved in the formation of organic aerosols in both polluted areas and remote places. This work aims at developing an active sampling method to monitor these compounds (i.e. 6 straight-chain saturated aldehydes from C6 to C11; 8 straight-chain alkanes from C9 to C16; 6 monoterpenes : α-pinene, β-pinene, camphene , limonene , α-terpinene, & γ-terpinene; and 5 aromatic compounds : toluene , ethylbenzene , meta-, para- and ortho-xylenes) in remote areas. Samples are collected onto multi-bed sorbent cartridges at 200 mL $min^{−1}$ flow rate, using the automatic sampler SyPAC (TERA-Environnement, Crolles, France). No breakthrough was observed for sampling volumes up to 120 L (standard mixture at ambient temperature, with a relative humidity of 75%). As ozone has been shown to alter the samples (losses of 90% of aldehydes and up to 95% of terpenes were observed), the addition of a conditioned manganese dioxide $(MnO_{2})$ scrubber to the system has been validated (full recovery of the affected compounds for a standard mixture at 50% relative humidity—RH). Samples are first thermodesorbed and then analysed by GC/FID/ MS . This method allows suitable detection limits (from 2 ppt for camphene to 13 ppt for octanal —36 L sampled), and reproducibility (from 1% for toluene to 22% for heptanal ). It has been successfully used to determine the diurnal variation of the target compounds (six 3 h samples a day) during winter and summer measurement campaigns at a remote site in the south of France.
File Format	HTM / HTML
ISSN	14640325
Issue Number	4
Volume Number	13
e-ISSN	14640333
Journal	Journal of Environmental Monitoring
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2011-04-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Environmental Health Alkanes Analysis Environmental Monitoring Methods Ketones Monoterpenes Humidity Limit Of Detection Journal Article Validation Studies
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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