Accession Number : AD0752440

Title :   The Evaluation of Existing Field Test Kits for Determining Free Chlorine Residuals in Aqueous Solutions,

Corporate Author : ARMY MEDICAL ENVIRONMENTAL ENGINEERING RESEARCH UNIT EDGEWOOD ARSENAL MD

Personal Author(s) : Guter,K. J. ; Cooper,W. J.

Report Date : OCT 1972

Pagination or Media Count : 71

Abstract : An evaluation of five commercially available test kit procedures which measure free available chlorine has been conducted on both synthetic water (chemically treated distilled water) and five natural waters. Synthetic water samples were used to evaluate parameters of interest, such as accuracy and precision, as influenced by temperature and pH. The ability of test kit procedures to differentiate free available chlorine from other previously reported chlorine test interfering ions, Mn(+2) and NO2(-), and the compounds mono- and dichloramine was also studied. The primary objective of the natural water studies was to evaluate the test kit procedures on a variety of natural waters that could be encountered around the world. Accuracy, precision and specificity for free available chlorine were evaluated. Procedural modifications should be attempted in order to increase the specificity of the N,N-diethyl-p-phenylene diamine procedure and to improve the accuracy of the Syringaldazine (Liquid) procedure, without adversely affecting their other qualities. (Author)

Descriptors :   (*CHLORINE, *COLORIMETRIC ANALYSIS), (*WATER POLLUTION, CHLORINE), (*SURVIVAL KITS, COLORIMETRIC ANALYSIS), WATER SUPPLIES, AMINES, ORGANIC NITROGEN COMPOUNDS, IMPURITIES, ERRORS, MANGANESE, NITRITES

Subject Categories : Inorganic Chemistry
      Escape, Rescue and Survival
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE