Interaction between al 3+ and acrylic acid and polyacrylic acid in acidic aqueous solution: A model experiment for the behavior of al 3+ in acidified soil solution

Mayumi Etou, Yuka Masaki, Yutaka Tsuji, Tomoyuki Saito, Shuqin Bai, Ikuko Nishida, Yoshihiro Okaue, Takushi Yokoyama

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

From the viewpoint of the phytotoxicity and mobility of Al 3+ released from soil minerals due to soil acidification, the interaction between Al 3+ and acrylic acid (AA) and polyacrylic acid (PAA) as a model compound of fulvic acid was investigated. The interaction was examined at pH 3 so as to avoid the hydrolysis of Al 3+ . The interaction between Al 3+ and AA was weak. However, the interaction between Al3+ and PAA was strong and depended on the initial (COOH in PAA)/Al molar ratio (R P ) of the solution. For the range of 1/RP, the interaction between Al 3+ and PAA can be divided into three categories: (1) 1:1 Al-PAA-complex (an Al 3+ combines to a carboxyl group), (2) intermolecular Al-PAA-complex (an Al 3+ combines to more than 2 carboxyl groups of other Al-PAA-complexes) in addition to the 1:1 Al-PAA-complex and (3) precipitation of intermolecular complexes. In conclusion, R P is an important factor affecting the behavior of Al 3+ in acidic soil solution. 2011

Original languageEnglish
Pages (from-to)111-115
Number of pages5
Journalanalytical sciences
Volume27
Issue number1
DOIs
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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