How sulfate content and soil depth affect the adsorption/desorption of selenate and selenite in tropical soils?
Anderson Mendes Araujo, Josimar Henrique de Lima Lessa, Luiz Gustavo Chanavat, Nilton Curi, Luiz Roberto Guimarães Guilherme, Guilherme Lopes
Abstract
Sorption of selenate (SeO 4 2- ) and selenite (SeO 3 2- ) is poorly understood in Brazilian agroecosystems, especially in soils from agricultural areas containing different contents of competing anions, such as sulfate (SO 4 2- ). This study aimed to assess the sorption behavior of selenate and selenite at different soil layers of a tropical soil treated with different rates of agricultural gypsum (thus, containing different contents of sulfate), collected under a coffee plantation. Soil samples from [...]
Topics & Concepts
SelenateSulfateSoil waterSorptionSeleniumGypsumEnvironmental chemistryDesorptionChemistryAdsorptionEnvironmental scienceSoil scienceGeologyPaleontologyOrganic chemistrySelenium in Biological SystemsHeavy Metal Exposure and ToxicityMercury impact and mitigation studies