東京湾内湾部における懸濁有機物の炭素安定同位体比 [in Japanese] Stable isotope ratios of particulate organic carbon in surface water at inner part of Tokyo Bay [in Japanese]
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Stable isotope ratios of particulate organic carbon (δ<sup>13</sup>C)were determined for surface water of inner part of Tokyo Bay in 1982-1984. δ<sup>13</sup>C values ranged from -12.3 ‰ to -25.3 ‰ (mean -19.3 ‰) at St-25 and -10.6 ‰ to -22.9 ‰ (mean -17.0 ‰) at St-35 during April to August 1982. Good linear relationships between δ<sup>13</sup>C values and salinity, silicate, ammonium and phosphate were observed, respectively at four stations locating from the estuary of the Arakawa River to the southward. This suggests that river water inflows to the Bay and spreads to the southward. δ<sup>13</sup>C values of litter' and soil were -25.7 ‰ and -29.3 ‰ respectively : these were apparently lower than those of marine plankton.
Chikyukagaku 20(1), 13-19, 1986
The Geochemical Society of Japan