Accession Number : AD0770021

Title :   Long-Term Stability of Low-Concentration Chromium Solutions in Glass and Polyethylene Containers.

Descriptive Note : Preliminary rept. 6 Dec 72-1 Aug 73,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Anand,Vir D. ; Ducharme,Donald M.

Report Date : OCT 1973

Pagination or Media Count : 13

Abstract : The stability of chromium solutions of low concentration (50 microg/dl), stored in either borosilicate glass or polyethylene containers previously subjected to a variety of surface treatments, has been evaluated over a period of 6 months. Polyethylene containers are not appropriate for storage of chromium solutions of low concentrations. Effects of surface adsorption, leading to significant losses in concentration, become obvious within 2 weeks in polyethylene vessels. Borosilicate glass containers, washed with water, are preferred for storage of such solutions for up to 6 months. Acid-washed and acid washed-basified-siliconized borosilicate glass vessels are equally satisfactory for the storage of Cr(+6) solutions of low concentrations. (Author)

Descriptors :   (*Solutions(Mixtures), Stability), (*Polyethylene, Surface properties), (*Glass, Surface properties), Adsorption, Containers, Chromium

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE