Landfills and waste water treatment plants as sources of ... - GKSS
Landfills and waste water treatment plants as sources of ... - GKSS
Landfills and waste water treatment plants as sources of ... - GKSS
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
STUDY 1: LANDFILLS AS SOURCES<br />
musk fragrances are emitted from <strong>w<strong>as</strong>te</strong> accumulated at l<strong>and</strong>fills but the air concentrations<br />
may partly be interfered by other (local) <strong>sources</strong>.<br />
Except for sample RF16, PBDEs from g<strong>as</strong>-ph<strong>as</strong>e samples were not detected in this study.<br />
These findings are in contr<strong>as</strong>t to those <strong>of</strong> St-Am<strong>and</strong> et al. (2008) who detected air<br />
concentrations <strong>of</strong> PBDEs up to 7 pg m -3 near to a sanitary l<strong>and</strong>fill in Ottawa, Canada.<br />
However, several studies from Europe revealed that airborne PBDEs generally decre<strong>as</strong>e from<br />
urban sites <strong>as</strong> local <strong>sources</strong> to more rural are<strong>as</strong> (Jaward et al. 2004a; Jaward et al. 2004b; Lee<br />
et al. 2004; Gioia et al. 2006). UK is regarded <strong>as</strong> regional source for continental Europe (Law<br />
et al. 2008). As trajectory revealed, air m<strong>as</strong>ses were arriving partly from these directions.<br />
However, elevated concentration could not be observed on l<strong>and</strong>fills <strong>and</strong> RFs. Therefore<br />
neither l<strong>and</strong>fills nor nearby local <strong>sources</strong> or long-range transport influenced PBDE air<br />
concentrations.<br />
BDE183 w<strong>as</strong> the only congener that w<strong>as</strong> detected in particle-ph<strong>as</strong>e samples. The<br />
concentration differences between samples <strong>of</strong> LA <strong>and</strong> the corresponding RF were not<br />
significantly different. In contr<strong>as</strong>t, concentrations <strong>of</strong> LB samples were significantly higher<br />
than those <strong>of</strong> the corresponding RF (p<br />
PFCs > PBDEs. Air concentrations <strong>of</strong> musk fragrances usually exceed those <strong>of</strong> PFC by<br />
factors <strong>of</strong> 3 to 14 (p