The study of 14C penetration into filters in primary productivity measurements using double side counting

Theodórsson, P.

Limnology and Oceanography 20(2): 288-291

1975


ISSN/ISBN: 0024-3590
DOI: 10.4319/lo.1975.20.2.0288
Accession: 068500797

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Abstract
The 14C-labeled assimilated organic matter penetrates into filters when primary productivity is measured but does not lie in a thin layer on the surface as has been assumed. This has been demonstrated by counting the filters from both sides with a Geiger-Müller counter and confirmed by measuring the counting efficiency of individual filters. When the double side counting indicates deeper penetration, the Geiger-Müller efficiency decreases as expected.