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Effect of film formation on the normal pulse polarographic behaviour of sulphide

✍ Scribed by D.R. Canterford

Publisher
Elsevier Science
Year
1974
Weight
170 KB
Volume
52
Category
Article
ISSN
0022-0728

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✦ Synopsis

Recently 1, differential pulse polarography has been shown to be suitable for the determination of small concentrations of anions (e.9., sulphide, halides) which give rise to anodic polarographic waves corresponding to mercury compound formation. The present communication reports on the application of the normal (or integral) pulse method to this type of electrode process. In particular, the pulse polarographic behaviour of sulphide was studied and compared with the previously reported direct current 2 and differential pulse I behaviour.

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For calcium lanthanum sulphide (CLS) formation, the effect of the sulphurizing agent is studied. CS 2 and sulphur are used as sulphurizing agents to sulphurize the lanthanum and calcium carbonate precursors which are formed by a coprecipitated method. With CS2 as a sulphurizing agent, the intermedia