Comparison of high-performance liquid chromatographic and atomic spectrometric methods for the determination of Fe(III) and Al(III) in soil and clay samples

✍ Scribed by Mary Meaney; Michelle Connor; Christopher Breen; Malcolm R. Smyth

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 659 KB
• Volume: 449
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(00)94383-8

✦ Synopsis

A comparison has been made of high-performance liquid chromatographic and atomic absorption spectrometric methods for the determination of Fe(II1) and Al(II1) in soil and clay samples, following five different digestion/extraction schemes. Good correlations were obtained in the case of Fe(II1) determinations in both matrices, but correlation was only achieved for Al(III) determinations following an hydrochloric acid digestion and a dithionite-citrate-bicarbonate extraction of the clay sample. Attempts have been made to explain the differences in results between the two methods in terms of the Al(II1) species which are likely to be present following extraction. Confirmatory

evidence to support some of the conclusions made with respect to the speciation of these metal ions in these matrices has been obtained using X-ray diffraction studies.