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Comparisons of indoor active and passive air sampling methods for emerging and legacy halogenated flame retardants in Beijing, China offices

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Emerging Contaminants 2016年第2期2卷 80-88页

作者： Seth Newton Ulla Sellströom Stuart Harrad Gang Yu Cynthia A.de Wit Department of Environmental Science and Analytical Chemistry(ACES) Stockholm UniversitySE-10691 StockholmSweden Division of Environmental Health and Risk Management School of GeographyEarth and Environmental SciencesUniversity of BirminghamBirmingham B152TTUnited Kingdom Department of Environmental Science and Engineering POPs Research CentreTsinghua UniversityBeijing 100084China

One active and two passive air sampling configurations were deployed simultaneously in three offices in Beijing,China to test their comparability for sampling emerging and legacy halogenated flame retardants spanning a large range of octanoleair partition coefficients(KOA).sampling in each office was carried out for three consecutive 28-day periods in the spring-summer of *** active sampler was run for 2.5 h at different times every day for 28 days to parallel the passive samplers and sample a total volume comparable to that sampled by the passive samplers(~20 m^3).At the end of each 28-day sampling period,a separate active air sample was taken by running the sampler pump continuously for about 2.5 *** comparability of measured concentrations varied between the air sampling configurations and for different *** predominant compound measured in nearly all samples was BDE-209,a compound known to have heavy use in *** emerging flame retardants were also detected including DBE-DBCH,PBT,HBB,DDC-CO,and *** little of the tetra-hexabrominated BDEs associated with the technical PentaBDE product was observed.

关键词： Indoor air passive air sampling Active air sampling Flame retardants Emerging flame retardants BFR

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Levels and Sources of Atmospheric Polycyclic Aromatic Hydrocarbons Surrounding an Oil Refinery in Curacao

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Journal of Environmental Protection 2019年第3期10卷 431-453页

作者： Erin L.Pulster Giffe Johnson Dave Hollander James McCluskey Raymond Harbison Mote Marine Laboratory SarasotaFLUSA College of Public Health University of South FloridaTampaFLUSA College of Marine Science University of South FloridaSt.PetersburgFLUSA

This research measured ambient levels of polycyclic aromatic hydrocarbons (PAHs) surrounding a petrochemical complex on the island of Curacao using passive air sampling. In addition, source elucidation of PAHs was conducted using concentration profiles, distribution profiles, binary diagnostic ratios and factor analysis. passive air samplers with polyurethane foam collection disks (PAS-PUFs) were deployed in 2011 (n = 43) and in 2014 (n = 30) to evaluate the extent of the emission plume as well as spatial and temporal differences in ambient PAH concentrations. In general, ambient PAH concentrations in Curacao were consistent with other urban and industrialized regions of the world;however, the levels measured downwind of Isla Refineriá petrochemical complex were among some of the highest reported ambient PAHs globally. Ambient PAH concentrations ranged from 1.2 to 790 ng/m3 in 2011 and 27 to 660 ng/m3 in 2014, demonstrating no temporal differences. However, significant spatial differences were detected between samples collected upwind and downwind of the petrochemical complex. Significantly higher ambient PAH concentrations were found in the samples collected downwind of the petrochemical complex compared to those upwind in 2014

关键词： Petrochemical Polycyclic Aromatic Hydrocarbons Curacao passive air sampling Diagnostic Ratios

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Sources and Trends of Persistent Organic Pollutants at Three passive Monitoring Sites in South Africa

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Journal of Geoscience and Environment Protection 2020年第7期8卷 207-218页

作者： Lloyd Shorai Pisa Nelson Mhlanga Patricia Mumbengengwi Department of Environmental Science and Technology Marondera University of Agricultural Sciences and Technology Marondera Zimbabwe Oakridge Sustainability Consulting Milton Keynes United Kingdom Department of Travel and Recreation Chinhoyi University of Technology Chinhoyi Zimbabwe

The Stockholm Convention on Persistent Organic Pollutants (SCPOPs) is an international treaty that operates under the patronage of the United Nations (UN) to control certain chemicals that are considered persistent organic pollutants (POPs). They are of great concern because of their adverse effects on human health and the environment. Exposure to POPs may lead to cancer, infertility, respiratory infections, and other health complications. It is therefore critical to study the degree of human and environmental exposure to these POPs. passive air sampling was conducted in South Africa to evaluate the presence and trends of persistent organic pollutants at Barberspan (rural agricultural), Vanderbijl Park (urban industrial) and Molopo Nature Reserve (isolated nature reserve). Samples were collected in 2012. passive air samplers using poly were used for sampling. The Buchi System B-811 automatic extractor was used to analyze for dichloro-diphenyl-trichlorethane (DDT), pentachlorobenzene (PeCB), hexechlorobenzene (HCB) polychlorinated biphenyls (PCBs) and hexachlorocyclohexane (HCH). sampling was conducted for a period of one year. POPs concentrations were generally low at all sites, but Vanderbijl Park had the highest concentrations. Seasonal changes in concentrations were much the same at the three sites with temperatures and wind patterns being major factors. The presence of these chemicals in Molopo Nature Reserve and Barberspan is evidence of long range transportation over dry semi desert areas. Back-trajectories indicate possible sources, including areas where DDT is used for malaria control. The presence of POPs is areas they have never been in use poses health and environmental risks in these areas.

关键词： Persistent Organic Pollutants passive air sampling Long Range Transportation

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