First International Conference on MOLDAVIAN RISKS – FROM ...
First International Conference on MOLDAVIAN RISKS – FROM ...
First International Conference on MOLDAVIAN RISKS – FROM ...
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<str<strong>on</strong>g>First</str<strong>on</strong>g> <str<strong>on</strong>g>Internati<strong>on</strong>al</str<strong>on</strong>g> <str<strong>on</strong>g>C<strong>on</strong>ference</str<strong>on</strong>g> <strong>on</strong> <strong>MOLDAVIAN</strong> <strong>RISKS</strong> - <strong>FROM</strong> GLOBAL TO LOCAL SCALE<br />
16-19 May 2012, Bacau, Romania<br />
ANALYSIS OF HAZARD POLLUTION ON OLD PESTICIDE<br />
STORAGES IN MOLDOVA<br />
Oleg Bogdevich, Oleg Cadocinicov, Culighin Elena<br />
Academy of Science of Moldova, Institute of Geology and Seismology<br />
Corresp<strong>on</strong>ding author: Oleg Bogdevich, bogdevicholeg@yahoo.com<br />
Abstract: The inventory of old pesticide storages in Moldova executed by Ministry of<br />
Envir<strong>on</strong>ment and World Bank showed a large quantity of polluted sites (near 1500)<br />
remains after the repacking and evacuati<strong>on</strong> project. More that 15 % sites were determined<br />
as extra high polluted territory with the POPs c<strong>on</strong>centrati<strong>on</strong> in soil more 50,0 mg/kg. They<br />
include some of the world’s most harmful chemicals including highly toxic pesticides such<br />
as HCH, DDT and industrial chemicals such as PCBs. The aim of this work is to determine<br />
all polluti<strong>on</strong> spectrums <strong>on</strong> 50 polluted sites for Envir<strong>on</strong>mental Risk Assessment procedure<br />
and the remediati<strong>on</strong> acti<strong>on</strong> development. GC and GC/MS equipment and internati<strong>on</strong>al<br />
analytical methods (EPA, ISO, etc.) were used in accredited laboratory by ISO17025 for<br />
the determinati<strong>on</strong> of toxic substances in soil and other envir<strong>on</strong>mental samples. Five POPs<br />
compound groups namely ∑ DDT, ∑ HCH, Chlordane, Heptachlor and Toxaphene have<br />
been found <strong>on</strong> studied sites. They have an additi<strong>on</strong>al polluti<strong>on</strong> by trifluraline, triazines,<br />
perithroids, PAHs and other old pesticides. Small number of sites has high heavy metal<br />
polluti<strong>on</strong>. All sites were distributed <strong>on</strong> five polluti<strong>on</strong> clusters for the risk assessment<br />
procedure and the ranking of investigated sites: 0.10 <strong>–</strong> 1.0 mg/kg; 1.0 <strong>–</strong> 10.0 mg/kg; 10.0 <strong>–</strong><br />
50.0 mg/kg; 50.0 <strong>–</strong> 250.0 mg/kg; and more 250.0 mg/kg. The toxicity level, MAC and<br />
possible synergism effect were used for the risk assessment procedure of polluted sites.<br />
The c<strong>on</strong>clusi<strong>on</strong> is that polluti<strong>on</strong> spectrum is complex <strong>on</strong> investigated sites and it can be<br />
extrapolated for all polluted sites in Moldova. The possible remediati<strong>on</strong> acti<strong>on</strong> should to be<br />
developed after the complex study of polluti<strong>on</strong> spectrum and geotechnical c<strong>on</strong>diti<strong>on</strong>s for<br />
every site. Created database of polluted territories is used actually by local and central<br />
authorities for the waste management and planning of remediati<strong>on</strong> acti<strong>on</strong> in Republic of<br />
Moldova.<br />
Key words: Toxic Substances, GC, GC/MS, Envir<strong>on</strong>mental Impact Assessment.<br />
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