COMPARISON BETWEEN AN ANIONIC EXCHANGER OF CHITOSAN QUATERNARY AMMONIUM SALT AND A COMMERCIAL EXCHANGER IN THE EXTRACTION OF AVAILABLE PHOSPHORUS IN SOILS

被引：15
作者：
Goncalves Junior, Affonso Celso [1 ]
Nacke, Herbert [1 ]
de Favere, Valfredo Tadeu [2 ]
Gomes, Gilmar Divino [3 ]
机构：
[1] Univ Estadual Oeste Parana, Ctr Ciencias Agr, BR-85960000 Marechal Candido Rodondo, PR, Brazil
[2] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil
[3] Fac Tecnol Int, BR-80020110 Curitiba, Parana, Brazil
来源：
QUIMICA NOVA | 2010年 / 33卷 / 05期
关键词：
chitosan; phosphorus extraction; soil; MICROSPHERES; ADSORPTION; REMOVAL; WATER; IONS; NMR;
D O I：
10.1590/S0100-40422010000500008
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
COMPARISON BETWEEN AN ANIONIC EXCHANGER OF CHITOSAN QUATERNARY AMMONIUM SALT AND A COMMERCIAL EXCHANGER IN THE EXTRACTION OF AVAILABLE PHOSPHORUS IN SOILS. The present work aimed modify chemically the chitosan (QTS) surface to obtain a reticulate chitosan quaternary ammonium salt (SAQQR), and compare this anionic exchanger with an commercial ion exchanger in the extraction of available phosphorus in soils. The results showed that the two exchangers are identical, extracting similar and proportional quantities of available phosphorus in the studied soils, and the anionic exchanger of SAQQR provides a high chemical stability, not affected by the pH difference of soils.
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收藏
页码：1047 / 1052
页数：6
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