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):

Report Date:

1973-10-01

Pagination or Media Count:

13.0

Abstract:

The stability of chromium solutions of low concentration 50 microgdl, 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 Cr6 solutions of low concentrations. Author

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE