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Use of aluminium in the marsh test

✍ Scribed by J.S.H.

Publisher
Elsevier Science
Year
1929
Tongue
English
Weight
48 KB
Volume
208
Category
Article
ISSN
0016-0032

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✦ Synopsis

Use of Aluminium in the Marsh Test. ELMER B. SVENSON. (Chemist-Analyst, 1929, 18, No. 3, 5) recommends the use of metallic aluminium, in the form of rod, instead of zinc in the Marsh test for arsenic. The aluminium is entirely free from arsenic, and readily reacts with hydrochloric acid to produce nascent hydrogen. When sulphuric acid is used, the aluminium should be activated by immersion in a slightly acid solution of a salt of copper or mercury until a light coat deposits on the rod. CoplSer-coated rod may be dried and stored. Mercury-coated rod is more active, but must be freshly prepared. The Marsh test, thus modified, gives accurate and sensitive results.

J. S. H.

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