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- W2031957025 abstract "The concentrations of heavy metals in the fine fraction (<63 microm) of 19 surficial sediment samples from the border region of Baja California (Mexico) and California (USA) were determined. The concentration ranges (in microg g(-1)) of the metals were: Cu, 4.9-23; Zn, 39-188; Ni, 16-44; Cr, 56-802; Pb, 6-21; Cd, 0.08-0.64; Ag, 0.01-0.28; and Mn, 392-1506; the intervals (percentage) for Fe and Al were 1.36-4.6 and 3.61-8.55, respectively. The heavy metals in these sediments indicate a relative enrichment of Cr (>3000%), Zn (>350%), Ni (>300%) and Cu (>150%) off the wastewater outfall at Punta Bandera in Tijuana, Baja California, with respect to non-polluted sediments of the region. Pb, Cd and Ag have low concentrations off the same outfall and enrichment factors are generally lower than 300% (Pb) and lower than 150% (Cd and Ag). This suggests that these metals have a different origin, or that they are controlled by a different geochemical mechanism than the former. The concentrations of Mn, Fe and Al occurred within ranges typical for coastal areas and probably reflect the mineralogical composition of the sediments of the region." @default.
- W2031957025 created "2016-06-24" @default.
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- W2031957025 date "2000-06-01" @default.
- W2031957025 modified "2023-09-26" @default.
- W2031957025 title "Heavy metals in the fine fraction of coastal sediments from Baja California (Mexico) and California (USA)" @default.
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- W2031957025 doi "https://doi.org/10.1016/s0269-7491(99)00222-5" @default.
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