Accession Number : AD0782330

Title :   Spectrophotometric Determination of Copper at Low Levels in Fresh or Saline Water. Determination of Chemical Oxygen Demand (COD) Employing Ceric Ion as Oxidant.

Descriptive Note : Interim rept. 1 Jul 73-1 Jan 74,

Corporate Author : NAVAL ACADEMY ANNAPOLIS MD ENVIRONMENTAL PROTECTION RESEARCH AND DEVELOPMENT TEAM

Personal Author(s) : Rollins,Orville W.

Report Date : 02 MAY 1974

Pagination or Media Count : 26

Abstract : An accurate spectrophotometric method has been developed for determination of copper in fresh or saline waters. The method uses the orange colored complex formed by Cu(I) and Bathocuproine and it may be used where the concentration of copper is as low as one part per billion (ppb). A modification of the standard method for determination of Chemical Oxygen Demand (COD) is proposed using ceric iron as the oxidant. The method which is described reduces the refluxing time from two hours to one-half hour and enables the analyst to determine COD values in saline waters where the chloride ion concentration is as high as 12,500 ppm without using a correction factor. (Author)

Descriptors :   *Copper, *Sea water, Spectrophotometry, Chemical analysis, Cerium, Oxidizers

Subject Categories : Physical and Dynamic Oceanography
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE