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Biomonitoring studies for estimation population health surveillance and exposure risk assessment of different
chemical contaminants such as chlorinated compounds or polycyclic aromatic hydrocarbon (PAH) compounds has
become an important task especially after the Stockholm Convention. If before the toxicological evaluation of humans
were done using invasive methods like surgery or pricking, today many scientists tried to elaborate non-invasive
analytical methods without disparage the final results.
During the last years studies it was observed a relative higher pollution with organochlorine and polycyclic
aromatic hydrocarbon compounds in surrounding regions of Dej, Transylvania. These past studies shown that pollution
with chlorinated compounds as chlorinated solvents are attributed to the industrial activities from this region. The levels
in soil and river water of these compounds were: ≈ 20 - 60 μg·kg-1 and ≈ 15 - 45 μg·L-1, respectively. In case of PAHs
the following results were obtained for soil and river water: for two ring specie was between ≈ 26 - 35 μg·kg-1 and ≈ 21
- 30 μg·L-1, respectively; for three ring species was 15 - 35 μg·kg-1 and ≈ 10 - 24 μg·L-1, respectively; and in case of
four ring species was between 10 - 20 μg·kg-1 and ≈ 3 - 15 μg·L-1, respectively.
These results carry on concern regarding the bioaccumulation of these pollutants by humans through food web
chain. In order to establish the uptake level of these compounds by humans, home grown animal hair as pig and cow
were analyzed through SIM-GC-MS mode and ECD-FID-GC. The presence of chlorinated solvents detected in pig and
cows hair were as follows: compounds from chloromethane family ≈ 5 - 10 ng·kg-1 dry weight; compounds from
chloroethane family ≈ 7 - 34 ng·kg-1 dry weight for pig hair, and ≈ 12 - 17 ng·kg-1 dry weight for compounds from
chloromethane family and 14 - 48 ng·kg-1 dry weight for cow hair. Difference between accumulation levels of PAH
metabolites were observed also between cow and pig hair samples.
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