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Flow-injection spectrophotometric determination of sulphate ion with a barium chloranilate-cellulose reaction column

✍ Scribed by Keihei Ueno; Fumio Sagara; Katsuya Higashi; Ken'shi Yakata; Isao Yoshida; Daido Ishii

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 445 KB
Volume: 261
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(92)80197-f

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✦ Synopsis

Flow-m]ectlon analysis was apphed to the determmatlon of sulphate m natural water The sample plug in the carrier stream (05% aqueous ammonmm chloride contaming 50% ethanol) passes through two columns in series The first column IS packed wth cation-exchange resm (ammonmm form) to remove mterfermg cations The second column IS packed Hrlth spherical beads of regenerated cellulose contammg sohd banum chloramlate partlcles Sulphate Ion m the sample reacts wth banum chlorandate m the reactlon column to release chlorandate Ion, which IS eventually monitored by a spectrophotometnc detector at 530 nm This approach IS an improvement of a previous technique m which the reactlon column was packed with fme barmm chlorandate powder With the use of spherlcal beads of cellulose contammg fme particles of banum chloramlate, the reactlon c~hunn can be packed more unrformly, glvmg a more stable basehne and better reproduclbdlty

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