Atmospheric Semivolatile Organochlorine Compounds in European High-Mountain Areas (Central Pyrenees and High Tatras)

Barend L.Van Drooge; Joan O.Grimalt; Lluis CamareroJordi CatalanEvzen StuchlikCarlos J.Torres Garcia

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Atmospheric Semivolatile Organochlorine Compounds in European High-Mountain Areas (Central Pyrenees and High Tatras)

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Atmospheric samples from two European high-mountain areas showed similar composition of semivolatile organochlorine compounds (SOC),such as polychlorobi-phenyls (PCBs),DDTs,endosulfans,hexachlorobenzene (HCB),and hexachlorocyclohexanes(HCHs).Nearlyall compounds were predominantly found in the gas phase and only the less volatile such as some PCBs (e.g.,149,118,153,138,and 180) were found in higher abundance in the particulate phase.HCB,49-85 pg m~(-3),is the dominant SOC.This compound is only found in the gas phase exhibiting uniform concentrations irrespective of season and air mass origin.SOC of present use,like HCHs and endosulfans,were found in higher concentrations in the warm periods,32-46 and 4-10 pg m~(-3) in the gas+particulate phases,respectively,reflecting their seasonal pattern of use in many European countries.PCB and 4,4'-DDE,39-42 and 4-6 pg m~(-3) in the gas+particulate phases,respectively,also showed a seasonal trend despite neither the former nor the precursor of the latter (4,4'-DDT) being manufactured with their use drastically restricted since the 1980s.The seasonal differences are mainly due to a higher occurrence of air masses with strong continental inputs in the warm than in the cold periods.In this respect,samples whose air masses traveled at the high troposphere (backward air mass trajectories>6000 m) have been observed to carry considerably smaller PCB and 4,4'-DDE loads (9.3+-2.8 and 0.4+-0.05 pg m~(-3),respectively) than overall average.

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《Environmental Science & Technology: ES&T》 |2004年第13期|3525-3532|共8页
作者
Barend L.Van Drooge; Joan O.Grimalt; Lluis CamareroJordi CatalanEvzen StuchlikCarlos J.Torres Garcia;
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作者单位

Department of Environmental Chemistry,Institute of Chemical and Environmental Research (ICER-CSIC),Jordi Girona 18,08034 Barcelona,Catalonia,Spain;

Centre for Advanced Studies of Blanes (CEAB-CSIC),Acces Cala St.Francesc 14,Blanes 17300,Catalonia,Spain;

Department of Hydrology,Charles University,Vinicnd 7,12044 Prague,Czech RepublicIzana Atmospheric Observatory,National Institute of Meteorology,La Marina 20,38071 Santa Cruz de Tenerife,Canary Islands,Spain;

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正文语种英语
中图分类环境化学;
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Atmospheric Semivolatile Organochlorine Compounds in European High-Mountain Areas (Central Pyrenees and High Tatras)

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