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Determination of trace anionic impurities in concentrated inorganic acids by recycle ion chromatography

โœ Scribed by Mitsunori Murayama; Masao Suzuki; Shoji Takitani

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
461 KB
Volume
466
Category
Article
ISSN
1873-3778

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โœฆ Synopsis

A simple, sensitive and rapid method for determination of trace anions (chloride, nitrite, bromide, nitrate and sulphate ion) in concentrated inorganic acids (hydrochloric, nitric, phosphoric and sulphuric) has been developed. Each sample is diluted lOWOO-fold in water and neutralized with sodium hydroxide. The determination is made by recycle ion chromatography to separate an objective trace anion from the coexisting anion of the sample acid. The detection limit of each anion was 0.330.9 ppm in the sample acid.

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