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Abstract
As an enzyme which participates in the release of orthophosphate (DRP) from organic phosphorus, alkaline phosphatase activity was measured in seawater of Tokyo Bay. Alkaline phosphatase activity found in the present Tokyo Bay is now correlated negatively with DRP concentration, whereas the correlation was positive 10 years ago. This change can be attributed to an increase over the past ten years in DRP concentration above the 7 μg P/L threshold for inhibition of alkaline phosphatase production for the microbial habitants in Tokyo Bay.
Notes
To whom correspondence about this research should be addressed