Pelagic bacteria represent the potentially most predominant biological, particulate sorptive surface for hydrophobic organic contaminant (HOC) and constitute a food source for the microheterotrophic food web, which conceivably continues up to pelagic fish. However, no data have been reported on HOCs in bacteria. Therefore, this fraction (0.2−2 μm) was isolated with a new technique in situ in the Baltic Sea followed by HOC analysis (HRGC-MS). Results show bacterial concentrations (PAHs and PCBs) in the same order as or higher than the larger particulate fraction (2−90 μm), which clearly illustrates the significance of heterotrophes for the distribution and dynamics of HOCs in marine waters.
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Broman et al. (1996) studied this question.
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