Reports

Inorganic Precipitation of Carbon in Productivity Experiments Utilizing Carbon-14

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Science  22 Jun 1962:
Vol. 136, Issue 3521, pp. 1049-1050
DOI: 10.1126/science.136.3521.1049

Abstract

In a series of experiments where iron was added to natural waters and photosynthesis was measured by the radiocarbon method, we found that inorganic precipitation of carbon-14, presumably by mechanisms of occlusive coprecipitation, resulted from additions of 100 or more micrograms of iron per liter. Low levels of iron and prefiltered controls are suggested as correction measures.

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