[PDF]    http://dx.doi.org/10.3952/lithjphys.48406

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 48, 357–366 (2008)


PERSISTENT ORGANIC POLLUTANTS IN LITHUANIA: ASSESSMENT OF AIR AND SOIL CONTAMINATION
A. Milukaitėa, J. Klánováb, I. Holoubekb, I. Rimšelytėa, and K. Kvietkusa
aInstitute of Physics, Savanorių 231, LT-02300 Vilnius, Lithuania
E-mail: amk@ktl.mii.lt
bResearch Centre for Environmental Chemistry and Ecotoxicology of Masaryk University, Kamenice 126/3, CZ-62500 Brno, Czech Republic

Received 8 September 2008; revised 14 November 2008; accepted 4 December 2008

Persistent organic pollutants (POPs) such as polycyclic aromatic hydrocarbons (PAHs), polychlorbiphenyls (PCBs), and pesticides (hexachlorcyclohexanes (HCHs), dichlordiphenyltrichlormetilmetanes (DDTs)) were investigated in the atmospheric air and soil at 5 sites of Lithuania during March–August, 2006. POPs concentration at different sampling sites varied in the range of 6.39–127.8 ng m–3, 0.017–0.440 ng m–3, 0.088–0.310 ng m–3, and 0.006–0.360 ng m–3 in the atmospheric air and in the range of 29.5–529.3 ng g–1, 0.6–24.0 ng g–1, 0.4–1.1 ng g–1, and 0.3–7.7 ng g–1 in soil for PAHs, PCBs, HCHs, and DDTs, respectively. The direct relationship between the POPs concentration level in the atmospheric air and soil at all sampling sites was observed. The concentrations of PAHs dominated over those of other POP groups in the atmospheric air and soil as well. The highest concentrations of almost all POP compounds were determined in the atmospheric air and soil in Vilnius city at the site with intensive traffic and commercial activity. Such wide range investigations of POPs in the natural environment components have been performed for the first time in Lithuania.
Keywords: PAHs, PCBs, HCHs, DDTs, concentration, passive samplers, atmospheric air, soil
PACS: 82.33.Tb; 92.60.Mt; 07.88.+y


PATVARŪS ORGANINIAI TERŠALAI LIETUVOJE: TARŠOS ORE IR DIRVOJE ĮVERTINIMAS
A. Milukaitėa, J. Klánováb, I. Holoubekb, I. Rimšelytėa, K. Kvietkusa
aFizikos institutas, Vilnius, Lietuva
bMasaryko Universitetas, Brno, Čekija

Patvarių organinių teršalų (POT), tame tarpe policiklinių aromatinių angliavandenilių (PAA), polichlorbifenilų (PCB) ir pesticidų (heksachlorcikloheksanų (HCH), dichlordifeniltrichlormetilmetanų (DDT)), tyrimai atlikti 2006 m. kovo–rugpjūčio mėnesiais atmosferos ore ir dirvoje penkiose Lietuvos vietovėse. POT atmosferos ore tirti panaudojant pasyvius sorbentus, kurie pastaruoju metu yra plačiai taikomi atmosferos užterštumo tyrimams regioniniu ir globaliu mastu. Tyrimų rezultatai parodė, kad 16-kos PAA junginių, 7-ių PCB, 4-ių HCH ir 6-ių DDT suminės koncentracijos ore Lietuvos teritorijoje kito 6,4–127,8 ng m–3, 0,017–0,440 ng m–3, 0,088–0,310 ng m–3, 0,006–0,360 ng m–3 ribose, o dirvoje 29,5–529,3 ng g–1, 0,6–24,0 ng g–1, 0,4–1,1 ng g–1, 0,3–7,7 ng g–1 ribose. Nustatyta tiesioginė priklausomybė tarp koncentracijų POT atmosferos ore ir dirvoje. Tarp tirtų POT grupių policiklinių aromatinių angliavandenilių koncentracijos buvo didžiausios ir atmosferos ore, ir dirvoje. Beveik visų POT didžiausios koncentracijos buvo Vilniaus mieste, o mažiausios – Rūgšteliškio stebėsenos stotyje. Polichlorbifenilų, ypatingai PCB28, koncentracijos buvo didesnės vasarą, esant aukštesnei oro temperatūrai. Skirtingai nuo kitų POT, policiklinių aromatinių angliavandenilių koncentracija ore mažėjo nuo šildymo sezono iki vasaros pradžios. Vidutinės benz(a)pireno koncentracijos atmosferos ore vertės, nustatytos naudojant pasyvius sorbentus, buvo mažesnės už jų vidutines vertes, nustatytas imant oro bandinius mažu filtracijos greičiu. Tai rodo, kad pasyvių sorbentų metodas labiau tinka nustatant dujines negu aerozolines POT koncentracijas. Tokie plataus spektro patvarių organinių teršalų tyrimai gamtinės aplinkos sanduose Lietuvoje atlikti pirmą kartą.


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