[PDF]    http://dx.doi.org/10.3952/lithjphys.47205

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 47, 203–210 (2007)


ORGANIC AND ELEMENTAL CARBON IN COASTAL AEROSOL OF THE BALTIC SEA
A. Milukaitė, K. Kvietkus, and I. Rimšelytė
Institute of Physics, Savanorių 231, LT-02300 Vilnius, Lithuania
E-mail: amk@ktl.mii.lt

Received 28 March 2007; revised 10 May 2007

Investigation of organic (OC) and elemental (EC) carbon in atmospheric aerosol was performed at the Preila Environmental pollution research background station on 19–28 June 2006. In parallel, the measurement of black carbon by the reflectometric method was carried out. The sources of carbonaceous compounds were detected by using air mass backward trajectories. The highest concentrations of OC and EC were transported with air masses of the southwestern direction, from the “black triangle” (bordering areas of Czech Republic, Germany, and Poland), and the lowest concentrations of carbonaceous compounds were associated with air masses from the Atlantic Ocean. The input of westerly air mass exceeded 50% of total pollution, which is in agreement with earlier determined peculiarities of background pollution formation in the Baltic region.
Keywords: organic carbon, elemental carbon, black carbon, coastal aerosol, air mass backwards trajectories
PACS: 82.33.Tb, 92.60.Mt, 92.60.Sz, 07.88.+y


ORGANINĖ IR ELEMENTINĖ ANGLIS BALTIJOS JŪROS PAKRANTĖS AEROZOLYJE
A. Milukaitė, K. Kvietkus, I. Rimšelytė
Fizikos institutas, Vilnius, Lietuva

Organinė ir elementinė anglis atmosferos aerozolyje buvo tirta 2006 m. birželio 18–28 dienomis Preilos Aplinkos užterštumo tyrimų stotyje. Organinės ir elementinės anglies koncentracijos buvo įvertintos termooptiniu metodu. Lygiagrečiai reflektometriniu metodu buvo atlikti juodosios anglies matavimai. Turinčių anglies junginius aerozolio dalelių, įvertinant jų šaltinius, pernaša analizuota naudojant atgalines oro masių pernašos trajektorijas 1000, 500 ir 20 m virš žemės paviršiaus. Trajektorijos skaičiuotos NOAA (National Oceanic and Atmospheric Administration, JAV) HYSPLIT modelio metodika [11]. Rasta, kad didžiausios organinės ir elementinės anglies koncentracijos aerozoliuose buvo susijusios su pietvakarinėmis oro masėmis, praslinkusiomis virš „juodojo trikampio” (Lenkijos, Čekijos, Vokietijos pasienio teritorija), o žemiausios – su oro masėmis nuo Atlanto vandenyno. Organinė ir elementinė anglis, nešama vakarinių oro masių, Preilos foninėje stotyje sudarė daugiau nei 50 % visos anglį turinčių medžiagų taršos. Gauti rezultatai atitinka Pabaltijo atmosferos užterštumo fono formavimosi dėsningumus, nustatytus anksčiau kitiems teršalams.


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