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洞庭湖水体异味物质及其与藻类和水质的关系

邓绪伟 陶敏 张路 谢平 陈隽 张静

邓绪伟, 陶敏, 张路, 谢平, 陈隽, 张静. 洞庭湖水体异味物质及其与藻类和水质的关系[J]. 环境科学研究, 2013, 26(1): 16-21.
引用本文: 邓绪伟, 陶敏, 张路, 谢平, 陈隽, 张静. 洞庭湖水体异味物质及其与藻类和水质的关系[J]. 环境科学研究, 2013, 26(1): 16-21.
DENG Xu-wei, TAO Min, ZHANG Lu, XIE Ping, CHEN Jun, ZHANG Jing. Relationships between Odors and Algae and Water Quality in Dongting Lake[J]. Research of Environmental Sciences, 2013, 26(1): 16-21.
Citation: DENG Xu-wei, TAO Min, ZHANG Lu, XIE Ping, CHEN Jun, ZHANG Jing. Relationships between Odors and Algae and Water Quality in Dongting Lake[J]. Research of Environmental Sciences, 2013, 26(1): 16-21.

洞庭湖水体异味物质及其与藻类和水质的关系

基金项目: 国家科技基础性工作专项(2006FY110600)

Relationships between Odors and Algae and Water Quality in Dongting Lake

  • 摘要: 以洞庭湖水体中异味物质为研究对象,开展异味物质调查,并结合藻类结构、水质及其营养状况等因素,深入分析洞庭湖异味物质的来源和变化情况. 结果表明,DMS(dimethylsulfide,甲硫醚)、DMTS(dimethyltrisulfide,二甲基三硫醚)、β-cyclocitral(β-环柠檬醛)、MIB(2-methylisoborneol,二甲基异冰片)和GSM(geosmin,土嗅素)在全湖广泛存在,其最高质量浓度分别达到500.80、28.80、21.84、14.50和22.40 ng/L. 结合与藻类生物量的相关分析发现,直链藻、冠盘藻等硅藻可能是洞庭湖中DMS、DMTS和β-cyclocitral的重要来源,湖区土壤、沉积物中的微生物和死亡分解的藻类是MIB和GSM主要来源. 洞庭湖水体绝大部分处于中营养水平,其中东洞庭湖TLI(综合营养状态指数,为48.3)最高,南洞庭湖(为47.3)其次,西洞庭湖(为42.7)最低. 异味物质含量和水质的相关分析发现,异味物质质量浓度与TLI、水温、pH、ρ(DO)、ρ(TN)和ρ(CODMn)显著相关,说明水质对异味物质含量有重要影响.

     

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出版历程
  • 收稿日期:  2012-05-04
  • 修回日期:  2012-08-10
  • 刊出日期:  2013-01-25

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