Kilho Park

Deep-Sea pH

In the northeastern Pacific Ocean, north of 22 � N and east of 180 � W, a deep-sea pH maximum of 7.9 exists near 4000 meters. The effect of hydrostatic pressure on the dissociation constants of carbonic acid in sea water appears to be important in its formation.

Electrolytic Conductance of Sea Water: Effect of Calcium Carbonate Dissolution

Calcium carbonate dissolution in the presence of excess carbon dioxide increased the specific conductance of sea water by approximately 6 x 10-5 ohm-1cm-1 per millimole of carbonate dissolved. The observed conductance increase can be explained by the partial equivalent conductance of calcium bicarbonate and by the hindrance effect of uncharged carbon dioxide dissolved in sea water.

Alkalinity and pH off the coast of Oregon

Abstract Seasonal distributions of alkalinity and pH off the Oregon coast are complicated by coastal upwelling and by the presence of the Columbia River effluent in the upper 200 m. Between 200 and 1200 m, alkalinity and specific alkalinity do not change seasonally but increase linearly with depth. Their values are 2·29 mequiv./l. and 0·123 at 200 m and 2·45 mequiv./l. and 0·128 at 1200 m for alkalinity and specific alkalinity respectively. The vertical distribution of pH has a pattern similar to that of the oxygen distribution; the highest value is at the surface (8·2) and the lowest (7·5) in the oxygen minimum zone (800 m). The vertical distributions of alkalinity and pH are useful in the study of costal upwelling, and the horizontal distribution of specific alkalinity in the surface layers may be used to identify the Columbia River “plume” off the Oregon coast.

Partial equivalent conductance of electrolytes in sea water

Abstract : The partial equivalent conductances of sixteen electrolytes were measured in sea water. The electrolytes studied are: NaCl, KCl, MgCl2, CaCl2, SrCl2, Na2SO4, K2SO4, MgSO4, NaHCO3, KHCO3, Na2CO3, K2CO3, KH2PO4, KBr, HCl and NaOH. The equivalent conductance was obtained by comparing the specific conductance before and after the addition of one of the above electrolytes to sea water. Conductance ranged from 23/OHM sq cm for Na2CO3 to 310/OHM sq cm for HCl at 35.00 0/00 salinity and at 23C. (Author)

The partial equivalent conductances of electrolytes in seawater: a revision

Abstract The partial equivalent conductance of an electrolyte in seawater has been redefined to take into account the partial equivalent volume of the electrolyte. Previously published values of Park (1964) are revised in accordance with the new definition. They range from 20·7 Ω −1 cm 2 eq −1 for Na2CO3 to 286 Ω −1 cm 2 eq −1 for HCl at 35·04‰ salinity and at 23°C.

Gas chromatographic determination of dissolved oxygen in sea water using argon as carrier gas

Abstract A modification of the gas chromatographic method of Swinnerton, Linnenbom , and Cheek for the determination of dissolved oxygen in sea water is presented. Argon is used as the carrier gas. Relative standard deviation obtained by the modified method is ± 1·4 per cent for surface sea water samples. One analysis takes four minutes.