TY - JOUR
T1 - Interaction between al3+ and acrylic acid and polyacrylic acid in acidic aqueous solution
T2 - A model experiment for the behavior of al3+ in acidified soil solution
AU - Etou, Mayumi
AU - Masaki, Yuka
AU - Tsuji, Yutaka
AU - Saito, Tomoyuki
AU - Bai, Shuqin
AU - Nishida, Ikuko
AU - Okaue, Yoshihiro
AU - Yokoyama, Takushi
PY - 2011
Y1 - 2011
N2 - From the viewpoint of the phytotoxicity and mobility of Al3+ released from soil minerals due to soil acidification, the interaction between Al3+ 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 Al3+. The interaction between Al3+ and AA was weak. However, the interaction between Al3+ and PAA was strong and depended on the initial (COOH in PAA)/Al molar ratio (RP) of the solution. For the range of 1/RP, the interaction between Al3+ and PAA can be divided into three categories: (1) 1:1 Al-PAA-complex (an Al3+ combines to a carboxyl group), (2) intermolecular Al-PAA-complex (an Al3+ 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, RP is an important factor affecting the behavior of Al3+ in acidic soil solution. 2011
AB - From the viewpoint of the phytotoxicity and mobility of Al3+ released from soil minerals due to soil acidification, the interaction between Al3+ 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 Al3+. The interaction between Al3+ and AA was weak. However, the interaction between Al3+ and PAA was strong and depended on the initial (COOH in PAA)/Al molar ratio (RP) of the solution. For the range of 1/RP, the interaction between Al3+ and PAA can be divided into three categories: (1) 1:1 Al-PAA-complex (an Al3+ combines to a carboxyl group), (2) intermolecular Al-PAA-complex (an Al3+ 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, RP is an important factor affecting the behavior of Al3+ in acidic soil solution. 2011
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U2 - 10.2116/analsci.27.111
DO - 10.2116/analsci.27.111
M3 - Article
C2 - 21233571
AN - SCOPUS:78651239354
SN - 0910-6340
VL - 27
SP - 111
EP - 115
JO - analytical sciences
JF - analytical sciences
IS - 1
ER -