title: [Vertical transporting risk of nitrogen in purple soil affected by surfactant].
abstract: The simulated leaching experiment was conducted to determine the effects of surfactant of sodium dodecyl benzene sulphonate (SDBS) on vertical transporting of nitrogen in purple soil. SDBS could reduce NH4+ -N loss from soil, and the higher concentration of SDBS, the less loss. SDBS could increase NO3- -N loss from soil, and the order of accumulation loss is SDBS100 > SDBS40 > SDBS0 > SDBS5. Lower concentration SDBS decrease TKN loss, but higher concentration SDBS had a reverse effect, and compared with SDBS0, the accumulation loss TKN of SDBS40, SDBS100 increased by 16.8%, 22.36%, respectively. SDBS could affect vertical transporting of nitrogen in purple soil, that is, the significant down-transporting of nitrogen was observed after leaching with SDBS, and the higher concentration of SDBS, the more obviously transporting trend.
authors.affiliation: Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China. chenyucheng@swu.edu.cn
authors.forename: Yu-cheng
authors.initials: YC
authors.lastname: Chen
authors.forename: Zhi-min
authors.initials: ZM
authors.lastname: Yang
authors.forename: Ling
authors.initials: L
authors.lastname: Jiang
authors.forename: Qing-hu
authors.initials: QH
authors.lastname: Chen
authors.forename: Meng
authors.initials: M
authors.lastname: Gao
mesh_terms: D001557:Benzenesulfonates / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D001557:Benzenesulfonates; D000644:Quaternary Ammonium Compounds; D012987:Soil; D012989:Soil Pollutants; D013501:Surface-Active Agents; C001114:dodecylbenzenesulfonic acid; D009584:Nitrogen