Particle Size Distribution of Halogenated Flame Retardants and Implications for Atmospheric Deposition and Transport

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F14%3A00079396" target="_blank" >RIV/00216224:14310/14:00079396 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.acs.org/doi/full/10.1021/es5044547" target="_blank" >http://pubs.acs.org/doi/full/10.1021/es5044547</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/es5044547" target="_blank" >10.1021/es5044547</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Particle Size Distribution of Halogenated Flame Retardants and Implications for Atmospheric Deposition and Transport

Popis výsledku v původním jazyce

This study investigates the distribution of polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane (HBCD) and a group of novel flame retardants (NFRs) on atmospheric aerosols. Two high volume cascade impactors were used to collect particulate fractions of ambient air over a one year period at urban and rural sites. The majority of FRs were found on the finest aerosols (&lt;0.95 mu m). Concentrations of HBCD were higher than those of SPBDEs. Moreover, we noted seasonality and spatial differencesin particle size distributions, yet a large portion of the observed differences were due to differences in particulate matter (PM) itself. When normalized by PM, the size distributions of the FRs exhibited much greater heterogeneity. Differences existedbetween the FR distributions by molecular weight, with the higher molecular weight FRs (e.g., BDE-209, Dechlorane Plus) distributed more uniformly across all particulate size fractions.

Název v anglickém jazyce

Particle Size Distribution of Halogenated Flame Retardants and Implications for Atmospheric Deposition and Transport

Popis výsledku anglicky

This study investigates the distribution of polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane (HBCD) and a group of novel flame retardants (NFRs) on atmospheric aerosols. Two high volume cascade impactors were used to collect particulate fractions of ambient air over a one year period at urban and rural sites. The majority of FRs were found on the finest aerosols (&lt;0.95 mu m). Concentrations of HBCD were higher than those of SPBDEs. Moreover, we noted seasonality and spatial differencesin particle size distributions, yet a large portion of the observed differences were due to differences in particulate matter (PM) itself. When normalized by PM, the size distributions of the FRs exhibited much greater heterogeneity. Differences existedbetween the FR distributions by molecular weight, with the higher molecular weight FRs (e.g., BDE-209, Dechlorane Plus) distributed more uniformly across all particulate size fractions.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DI - Znečištění a kontrola vzduchu

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ENVIRONMENTAL SCIENCE &amp; TECHNOLOGY

ISSN

0013-936X

e-ISSN

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Svazek periodika

48

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

14426-14434

Kód UT WoS článku

000346686100045

EID výsledku v databázi Scopus

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