Organic matter in four Brazilian soil types: chemical composition and atrazine sorption

Química Nova

Centro de Ensino Superior de Rondonópolis, Rondonópolis, Brasil¹  Almeida, Paulo Sergio Gois¹  Knicker, Heike¹  Martinazzo, Rosane¹  Dick, Deborah Pinheiro¹  Technische Universität München, Freising, Germany¹  Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil¹ 

关键词: spectroscopy;    isotherms;    inorganic fraction.;   

DOI  :  10.1590/S0100-40422010000100003

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Soil organic matter is the main sorptive soil compartment for atrazine in soils, followed in a minor scale by the inorganic fraction. In this study, the soil organic matter quality and atrazine sorption were investigated in four different soil types. The pedogenic environment affected the humification and therefore the chemical composition of the organic matter. The organic matter contribution to atrazine sorption was larger (60-83%) than that of the inorganic fraction. The organic matter capacity in retaining the herbicide was favoured by a higher decomposition degree and a smaller carboxylic substitution of the aliphatic chains.

【 授权许可】

Unknown