3224
Accession Number
8904
Title Of Article Chaper
A rapid test for the detection of substances which will tarnish silver
Title Of Journal Book
Studies in Conservation
Volume
27
Issue
2
Pages
58-60
Collation
ill.
Publisher City
London
Language Of Text
English
Language Of Summary
French; German
Literature Type
Serial
Literature Level
Analytic
Abstract
A sodium azide based solution decomposes when in contact with materials which have the potential to tarnish silver by evolution of hydrogen sulphide. The rate of evolution of nitrogen gas from the reagent was used to assess the severity of the tarnishing. The test is microchemical and takes only a few minutes to perform.
Keywords
Silver, tarnish; Show-case material, gas emission; Storage container material, gas emission
pub_id
3224