Akademik Veri Yönetim Sistemi
10th Regional IUAPPA Conference, İstanbul, Türkiye, 23 - 26 Eylül 1997, ss.305-310, (Tam Metin Bildiri)
At present, there is no generally accepted technology for sampling and analyzing SOC (polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs)) dry deposition. In this study, a new analytical technique was developed to collect, separate and analyze the PCBs and PAHs under strict QA/QC requirements. In order to quantify the amount of SOC deposited, two surrogate surfaces were employed. SOC dry deposition was measured with greased strips and a water surface sampler (WSS). Unlike greased strips, which only measure particulate phase flux, the WSS measures both gas and particulate phase fluxes. Twelve SOC dry deposition samples were taken in Chicago, IL USA from June to October 1995. The average total PCB and PAH fluxes measured by the WSS were 1160 ng/m(2)-d and 332500 ng/m(2)-d and for greased strips 240 ng/m(2)-d and 144000 ng/m(2)-d, respectively. The fluxes from WSS are bigger than those obtained from greased strips because WSS is able to capture not only particle but also gas SOCs, In general, medium molecular weight SOCs dominated in both flux samples.