Long-Term Stability of Low-Concentration Chromium Solutions in Glass and Polyethylene Containers.
Preliminary rept. 6 Dec 72-1 Aug 73,
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX
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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
- Physical Chemistry