title: Impact of atrazine and nitrogen fertilizers on the sorption of chlorotoluron in soil and model sorbents.
abstract: Sorption of chlorotoluron in ammonium sulfate, urea and atrazine multi-solutes system was investigated by batch experiments. The results showed application of nitrogen fertilizers to the soil could affect the behavior of chlorotoluron. At the same concentration of N, sorption of chlorotoluron decreased as the concentration of atrazine increased on the day 0 and 6 in soil, respectively. The sorption of chlorotoluron increased from 0 to 6 d when soils were preincubated with deionized water, ammonium sulfate and urea solution for 6 d. That indicated incubation time was one of the most important factors for the sorption of chlorotoluron in nitrogen fertilizers treatments. The individual sorption isotherms of chlorotoluron in rubbery polymer and silica were strictly linear in single solute system, but there were competition sorption between pesticides or between pesticides and nitrogen fertilizers. That indicated the sorption taken place by concurrent solid-phase dissolution mechanism and sorption on the interface of water-organic matter or water-mineral matter.
authors.affiliation: College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China. gaominling@yahoo.com.cn
authors.forename: Min-Ling
authors.initials: ML
authors.lastname: Gao
authors.forename: Shu-Gui
authors.initials: SG
authors.lastname: Dai
authors.forename: Yong-Min
authors.initials: YM
authors.lastname: Ma
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D001280:Atrazine / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry; D005308:Fertilizers; D006540:Herbicides / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D010671:Phenylurea Compounds / Q000737:chemistry*; D012117:Resins, Synthetic / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D012989:Soil Pollutants / Q000737:chemistry*
chemical_list: D005308:Fertilizers; D006540:Herbicides; D010671:Phenylurea Compounds; D012117:Resins, Synthetic; D012989:Soil Pollutants; D012822:Silicon Dioxide; D002482:Cellulose; D009584:Nitrogen; D001280:Atrazine; C007033:chlortoluron