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"A dissolved radioactive or stable isotope tracer was added to the sample which was held for a predetermined time at an unstated (usually documented elsewhere) light intensity before filtration to collect the particulate phase. This was then treated with acid to remove inorganic carbon."@en .
"accepted"@en .
"SDN:S03::S03204" .
"tracer doping, incubation at unspecified light level, filtration, acidification"@en .
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