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Ocena zanieczyszczenia osadów Warty i jej dopływów - monitoring geochemiczny

Bojakowska I.

Zeszyty Naukowe. Górnictwo / Politechnika Śląska

2005

z. 267

55-61

Monitoringowe badania geochemiczne osadów wodnych w Polsce obejmują oznaczanie zawartości wybranych pierwiastków oraz trwałych zanieczyszczeń organicznych. Piętnastoletnie obserwacje w zlewni Warty wykazały występowanie podwyższonej zawartości metali ciężkich w osadach Warty na odcinku od Konina do ujścia rzeki do Odry i w górnym odcinku rzeki oraz w osadach niektórych dopływów Warty - w Nerze, Stradomce, środkowej Prośnie i Gwdzie. Średnia zawartość WWA w Osadach Warty i jej dopływów jest zbliżona do średniej zawartości WWA obliczonej dla rzek całej Polski. Najczęściej wykrywanymi związkami chloroorganicznych w osadach rzek był lindan oraz p,p'-DDD i p,p'-DDE.

The geochemical studies of water sediments in Poland include determinations of selected elements and persistent organie pollutants. Fifteenth years studies in the Warta river basin indicated the presence of increased contents of heavy metals in the Warta sediments at the river section from Konin to the connection with the Odra River and its upper-stream part and in sediments of the tributaries - the Ner river, the Stradomka river, the middle part of the Noteć river and the Prosna river. Mean concentration of PAHs in sediments of this area are similar to PAH contents observed in river sediments of whole Poland area. The most frequently detected chlorinated compounds were Lindane and p,p'-DDD and p,p'-DDE.

Chloroorganiczne pestycydy i polichlorowane bifenyle w osadach rzek Polski

Bojakowska I., Gliwicz T.

Przegląd Geologiczny

2005

Vol. 53, nr 8

649--655

Concentrations of chlorinated pesticides and polychlorinated biphenyls (PCB28, PCB52, PCB101, PCB118, PCB153, PCB138, PCB180), were determined in 80 river sediment samples collected from the whole area of Poland. Chlorinated pesticides were found in almost all samples. The most frequently detected pesticides were isomer y-HCH (Lindane) and the DDT group compounds. The concentrations of Lindane exceeding the detection limit were recorded in 95% of samples and Lindane contents above the PEL value were noted in 32.5% of the analysed samples. The high contests of pesticides were recorded mainly in river sediments near urban-industrial centres. The presence of p,p’-DDT was noted in 31 samples and its metabolite p,p’-DDE —in 78 samples, and p,p’-DDD —in 69 samples. The concentration of p,p’-DDE above PEL value (6.75 ug/kg) were detected in 9 samples, p’-DDD (8.51 ug/kg) —in 9 samples, p,p’-DDT —in 13 samples. Of the remaining pesticides the concentrations of heptachlor epoxide exceeding the detection limit were observed in 5 sediment samples, Dieldrin —in 15 samples, Aldrin —in 10 samples, Endrin —in 10 samples, Endosulfan I only in 1 sample, Endosulfan II — in 4 samples and Methoxychlor — in 2 samples. The concentrations of Heptachlor epoxide higher than the PEL value (2,74 ug/kg) were detected in 1 sample (1.3%). Of 48.8% of the analysed river sediment samples contained polychlorinated biphenyls above detection limit; in two locations the PCB concentrations were high enough to pose a threat for water organisms.