Indicele de geoacumulare şi gradul de poluare cu metale grele a sedimentelor subacvatice din Republica Moldova [Articol]
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Universitatea de Stat din Moldova
Abstract
Indicele geochimic (Igeo) al metalelor grele din sedimentele subacvatice din r. Prut şi din fl. Nistru, precum şi afluenţii acestora, caracterizează starea sedimentului ca nepoluat - moderat poluat, iar a celor din lacurile naturale Beleu şi Manta, artificiale Taraclia, Comrat, Cahul şi din mun. Chişinău nu sunt poluate cu metale grele (clasa 0, Igeo <0). S-a constatat o poluare puternică cu Pb în sedimentul râuleţului din s. Izvoare, r-nul Orhei (clasa 4, Igeo = 3,1-3,3) şi moderat - puternic poluate cu Cd (clasa 2-3, Igeo=2,2) din sedimentul râuleţelor Zonei Umede „Unguri-Holoşniţa.
The geochemical index (Igeo) of heavy metals in the Prut and the Nistru Rivers, underground sediments as well as their tributaries, characterize the state of the sediments as unpolluted - moderately polluted are those from the natural lakes Beleu and Manta, the artificial ones from Taraclia, Comrat, Cahul and Chisinau city are not polluted with heavy metals (class 0, Igeo is <0). It was found a strong pollution with Pb in the sediment of the rivers in Izvoare village, Orhei district (class 4, Igeo = 3.1-3.3) and a moderately - strongly pollution with Cd (class 2-3, Igeo = 2.2) in “Unguri-Holosnita” Humid Area small rivers.
The geochemical index (Igeo) of heavy metals in the Prut and the Nistru Rivers, underground sediments as well as their tributaries, characterize the state of the sediments as unpolluted - moderately polluted are those from the natural lakes Beleu and Manta, the artificial ones from Taraclia, Comrat, Cahul and Chisinau city are not polluted with heavy metals (class 0, Igeo is <0). It was found a strong pollution with Pb in the sediment of the rivers in Izvoare village, Orhei district (class 4, Igeo = 3.1-3.3) and a moderately - strongly pollution with Cd (class 2-3, Igeo = 2.2) in “Unguri-Holosnita” Humid Area small rivers.
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SANDU, Maria; Anatol TĂRÎŢĂ; Raisa LOZAN și Sergiu ŢURCAN. Indicele de geoacumulare şi gradul de poluare cu metale grele a sedimentelor subacvatice din Republica Moldova. Studia Universitatis Moldaviae. Seria Științe Reale și ale Naturii. 2018, nr. 1(111), pp. 179-187. ISSN 1814-3237. E-ISSN 1857-498X.