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洪湖沉积物中有机氯农药的释放动力学模拟

龚香宜 祁士华 吕春玲 苏秋克

龚香宜, 祁士华, 吕春玲, 苏秋克. 洪湖沉积物中有机氯农药的释放动力学模拟[J]. 环境科学研究, 2010, 23(11): 1351-1354.
引用本文: 龚香宜, 祁士华, 吕春玲, 苏秋克. 洪湖沉积物中有机氯农药的释放动力学模拟[J]. 环境科学研究, 2010, 23(11): 1351-1354.
GONG Xiang-yi, QI Shi-hua, Lv Chun-ling, SU Qiu-ke. Simulation of Organochlorine Pesticides Release Kinetics from Sediments of Honghu Lake[J]. Research of Environmental Sciences, 2010, 23(11): 1351-1354.
Citation: GONG Xiang-yi, QI Shi-hua, Lv Chun-ling, SU Qiu-ke. Simulation of Organochlorine Pesticides Release Kinetics from Sediments of Honghu Lake[J]. Research of Environmental Sciences, 2010, 23(11): 1351-1354.

洪湖沉积物中有机氯农药的释放动力学模拟

基金项目: 生物地质与环境地质教育部重点实验室开放基金项目(BGEGF200806);武汉科技大学引进人才科研启动基金项目(620033)

Simulation of Organochlorine Pesticides Release Kinetics from Sediments of Honghu Lake

  • 摘要: 以洪湖表层沉积物为研究对象,通过模拟试验,对悬浮状态下沉积物中有机氯农药的释放动力学过程进行了研究. 结果表明,沉积物中有机氯农药的释放具有初始阶段释放速度快而后释放速度减慢的规律. 并且,沉积物中有机氯农药的释放强度主要受化合物的水溶性控制. 水溶性相对较高的物质(如α-HCH)在水中的释放浓度较高,释放时间也更长. 另外,温度对有机氯农药的释放也有重要的影响,随着温度的升高,沉积物中有机氯农药的释放明显加强. 最后,通过试验数据分析,建立了沉积物中有机氯农药释放的一级动力学模型并确定了模型参数. 释放动力学模型的验证结果表明,实测值与模拟值吻合较好.

     

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出版历程
  • 收稿日期:  2010-04-17
  • 修回日期:  2010-07-05
  • 刊出日期:  2010-11-25

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