Jesu li borove iglice bioindikatori onečišćenja zraka? Usporedba razina organoklorovih spojeva u borovim iglicama i zraku

Levels of six PCB congeners and seven organochlorine pesticides were investigated and compared in ambient air and in pine needle samples. The applied methods are suitable for the analysis of PCBs and organochlorine pesticides in environmental samples and for their detection in recent intakes. DDE, HCB, lindane, PCB-28, PCB-52, PCB-101, PCB-138 and PCB-153 were found in all pine needle and air samples. The highest median values were found for PCB-28, PCB-101 and γ-HCH, and the lowest for PCB-180 and DDD. The median value of α-HCH/ γ-HCH ratios was 0.2 in both matrices. DDE/DDT ratios were close to or below 1 in some pine needle and ambient air samples. The results showed a correspondence between air and pine needle pollution; the same compounds were present in the highest or in the lowest levels in both types of matrices. These results suggest that pine needles are passive biomonitors of air pollution.Ispitane su i uspore|ene razine šest indikatorskih kongenera PCB-a i sedam organoklorovih pesticida u uzorcima zraka i borovih iglica. Primijenjene metode prikladne su za analizu PCB-a i organoklorovih pesticida u uzorcima iz okoliša te za određivanje njihova unosa u okoliš. DDE, HCB, lindan, PCB-28, PCB- 52, PCB-101, PCB-138 i PCB-153 na|eni su u svim uzorcima zraka i borovih iglica. PCB-28, PCB-101 i γ-HCH prisutni su u najvišoj, a PCB-180 i DDD u najnižoj razini. U obje matrice omjer α-HCH/γ-HCH je 0.2. Omjer DDE/DDT jednak je ili manji od jedinice u nekim uzorcima zraka i borovih iglica. Iz prikazanih rezultata vidljivo je da je onečišćenje zraka i borovih iglica slično, tj. da su isti spojevi prisutni u najvišim odnosno najnižim razinama u obje matrice. Rezultati upućuju na to da su vrste i razine organoklorovih spojeva u borovim iglicama dobar pokazatelj prosječnog profila onečišćenja zraka