Limnological organic analyses by quantitative dichromate oxidation /

A limnological oxidation technique, based on procedures employed in soil chemistry, was developed and tested by use of purified organic compounds and various natural substrates. A sample is oxidized by dichromate in a strongly acid medium maintained at 100 C. The amount of dichromate reacting (determined titrimetrically as the difference between the initial and final quantities) is reckoned as Oxygen Consumed, or weigh of oxygen required by the sample. The oxidation serves as the principal step for sensitive determinations of organic carbon (as CO2) and nitrogen (as NH3).Research supported by the United States Department of the Interior, Fish and Wildlife Service.Includes bibliographical references (p. 51-56).Appendix -- Proximate components in limnological samples.Bibliography.Summary.Limnological examples of quantitative oxidation.Significance and utilization of analytical data.Methods of dichromate oxidative analysis.Reaction characteristics of dichromate and organic matter.Oxidants and oxidative procedures.Introduction.A limnological oxidation technique, based on procedures employed in soil chemistry, was developed and tested by use of purified organic compounds and various natural substrates. A sample is oxidized by dichromate in a strongly acid medium maintained at 100 C. The amount of dichromate reacting (determined titrimetrically as the difference between the initial and final quantities) is reckoned as Oxygen Consumed, or weigh of oxygen required by the sample. The oxidation serves as the principal step for sensitive determinations of organic carbon (as CO2) and nitrogen (as NH3).Mode of access: Internet