By E. Crompton (Auth.)

This publication covers all facets of the research of seawater together with the main complicated actual suggestions. Sampling, the choice of anions, disolved gases, atomic absorption, tracking radioactive degrees, non-metallic compounds are all mentioned in flip

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Analysis of Seawater

This ebook covers all facets of the research of seawater together with the main complex actual thoughts. Sampling, the selection of anions, disolved gases, atomic absorption, tracking radioactive degrees, non-metallic compounds are all mentioned in flip

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And Frache, R. In Proceedings of the 3rd Congress of the Association of Italian Oceanology and Limnology, Sorrento, Italy. Pergamon Press, Oxford, p. 433 (1978) 108. E. S. Analytical Chemistry, 50, 444 (1978) 109. L. and Grant, V. In Estuarine Research (ed. E. Cronin) Academic Press, New York, p. 188 (1975) 91. 92. 93. 94. 95. 1 Chloride Chloride, at the levels that occur in seawater, is usually determined by classical titration procedures using standard silver nitrate as the titrant and potassium chromate indicator, or alternatively by the mercuric thiocyanate procedure using dithizone as indicator.

Even in the presence of 1 mg NH 3 -N per litre the indophenol blue reaction will consume only 3% of the phenol leaving most of the phenol to act as a pH buffer. Ethanol was used to solubilize the high concentration of phenol used in the system. 8 (a). 9). In addition to the chemical effects of varying salinity, there are optical interferences in colorimetric analysis which are peculiar to estuarine samples. Saline waters and river waters have, in the absence of colorimetric reagents, an apparent absorbance arising from: 1.

The ammonia in the sample passes through the membrane and the change in pH in the internal solution is detected by the glass electrode. The behaviour and characteristics, including theoretical detection limits, of the system are discussed. Le Corre and Treguer [71] developed an automated procedure based on oxidation of the ammonium ion to nitrite by hypochlorite in the presence of sodium bromide followed by spectrophotometric determination of the nitrite. The validity of automatic analysis of ammonium nitrogen in seawater was tested.

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