High-performance liquid chromatographic determination of aluminium and iron(III) in solar salt in the form of their 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone chelates
1993; Elsevier BV; Volume: 633; Issue: 1-2 Linguagem: Inglês
10.1016/0021-9673(93)83146-j
ISSN1873-3778
Autores Tópico(s)Environmental Chemistry and Analysis
ResumoAluminium and iron(III) ions in solar salts were separated and simultaneously determined in the form of their 1-phenyl- 3-methyl-4-benzoyl-5-pyrazolone (PMBP) chelates by HPLC. Four imported solar salt samples were subjected to this investigation. The samples were dissolved in dilute nitric acid with heating. An aliquot of the solution was pipetted and adjusted to pH 3 with acetate buffer, then 10 ml of 0.02 M PMBP—methanol solution were added. The chelates obtained were dissolved in dioxane and 10μl were injected and analysed by HPLC. The determinations were completed within 20 min and the recoveries of each metal were satisfactory. Divalent metal ions did not interfere under the same chromatographic conditions.
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