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Badan Riset dan Inovasi Nasional
07-11-2022
12-08-2024
b1ec5755-efea-4743-a59b-bd200d3248f5
INFORMASI: Data berikut ini masih dalam proses pemenuhan Prinsip SDI.
Geochemistry of heavy metals (Pb, Cr and Cu) in sediments and benthic communities of Berau Delta, Indonesia
Surficial sediments were collected from 17 locations in the estuarine region of the Berau Delta, Indonesia in April and September of 2007. Sediments were characterized by a simultaneous extraction procedure that estimates the concentration of metal partitioned onto operationally defined geochemical components of the sediment. The results showed that total metals in sediments were as follows, Pb (3–19 mgg 1 dry weight, dw), Cr (10–81 mgg1), and Cu (2–24 mgg1). These metal concentrations were higher in April than in September by a factor of 1.8. Most of these metals were also tightly bound in non-reactive component of sediments, and only a small fraction was associated with iron and manganese components (easily reducible and reducible fractions). The percentage of potentially bioavailable of each metal was 14.3 persen for Pb; 14.5 persen for Cr and 7.2 persen for Cu. We concluded that metal concentrations in sediment of Berau Delta were mostly not available to benthic biota. Coastal Marine Science 34(1): 000–000, 2010