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Polarographic Determination Of Nitrate In Sea Water, David Tung-Whei Chow, Rex J. Robinson
Polarographic Determination Of Nitrate In Sea Water, David Tung-Whei Chow, Rex J. Robinson
Journal of Marine Research
A new and accurate method for the determination of nitrate in sea water, based on the pola.rographic reduction of nitrate in the presence of uranyl ions, is presented. Sulfate ions depress the reduction current by a definite proportion, depending on the chlorinity of the water sample; for chlorinities in the range of 14 to 19 ‰, this effect is rather constant. Fluoride interferes strongly with the reduction of nitrate, but aluminum or zirconyl salts may satisfactorily eliminate this effect. Other interfering ions and preservatives are also discussed. A procedure for the determination of nitrate in sea water ha.s been proposed …
Further Observations On The Breeding And Migration Of The Bermuda Spiny Lobster, Panulirus Argus, W. H. Sutcliffe Jr.
Further Observations On The Breeding And Migration Of The Bermuda Spiny Lobster, Panulirus Argus, W. H. Sutcliffe Jr.
Journal of Marine Research
Some results of investigations of breeding, distribution, and migration of Panulirus argus in Bermuda during 1951 and 1952 are given. A graphic schedule of breeding events for females includes the times of appearance of the first and second spermatophores and the first and second eggs.