THE DETERMINATION AND DISTRIBUTION OF ORGANIC PHOSPHORUS IN SEA WATER. PART 1. THE DETERMINATION OF ORGANIC PHOSPHORUS IN SEA WATER WITH PERCHLORIC ACID OXIDATION
Abstract
A method is proposed for determining the organic P content in sea water by which the organic material is oxidized with HClO sub 4 and the organic P is converted to phosphate. HClO sub 4 was a better medium for oxidation that H sub 2 SO sub 4 in 2 respects: (1) the perchlorate salts formed upon the digestion of sea water were more readily H sub 2 O-soluble, and (2) HClO sub 4 required a smaller blank correction for impurities. By heating the samples with concentrated HCl, arsenic interference through the volatilization of the chloride was prevented. Total P was determined colorimetrically; organic P was calculated by deducting the inorganic P. For samples of high organic content, preliminary digestion with HNO sub 3 was desirable before HClO sub 4 digestion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1952
- Accession Number
- AD0003617
Entities
People
- Andrew L. Hansen
- Rex J. Robinson
Organizations
- University of Washington