A survey might have been done on top sediment types of 10 channels along side Feni River estuary was indeed analyzed to character the newest buildup, source and you may contaminants degrees of heavier precious metals. The results showed that the common content (?g grams-1) of 7 selected hefty metals used the order off Mn () > Cr () > Ni () > Co () > Pb (six.47) > Ag (step 1.09) > As the (0.85) > Hg (0.71), plus the concentrations ranged spatially and you may seasonally that have relatively highest levels within upward station and you can inside the rainy 12 months. Threshold feeling concentration (TEC) and you will probable perception concentration (PEC) viewpoints showed that brand new intensity of simply Ni and Cr was basically probably sporadically display undesireable effects on the ecosystem. Enrichment grounds (EF), geo-buildup index (Igeo) and you can contamination basis (CF) analyses revealed that Ag, Co and you will Hg was basically at the reasonable so you can higher contaminants membership and the fresh new sleeps (Once the, Cr, Ni, Pb and you can Mn) were in the no in order to reduced pollution account. Continue reading “Predicated on sediment top quality guidance (SQGs), the sediment samples was basically greatly polluted with Ag and Hg, and you can meagerly which have Co”
Contáctanos