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生态学杂志 ›› 2011, Vol. 30 ›› Issue (02): 395-400.

• 方法与技术 • 上一篇    下一篇

污水和污泥中的人工合成麝香分析方法

田艺心1,王美娥2,陈卫平2**,汪自强1   

  1. 1浙江大学农业与生物技术学院, 杭州 310029;2中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京 100085
  • 出版日期:2011-02-08 发布日期:2011-02-08

Analytical methods for synthetic musk in wastewater and sewage sludge.

TIAN Yi-xin1, WANG Mei-e2, CHEN Wei-ping2**, WANG Zi-qiang1    

  1. 1College of Agricultural and Biotechnology Science, Zhejiang University, Hangzhou 310029, China|2State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
  • Online:2011-02-08 Published:2011-02-08

摘要: 市政污水和污泥排放是人工合成麝香输入土壤环境的主要途径,污染物排放是生态风险评价中暴露分析模型的必要输入参数。目前有关土壤中人工合成麝香的生态风险研究较少报道,其中缺乏快捷、简便、准确的检测技术是限制这方面研究的主要因素之一。本研究针对污水的固相萃取法和液液萃取法,以及脱水污泥的索氏萃取法和快速溶剂萃取(ASE)法进行比较和优化,结果表明,采用液液萃取法和ASE法结合硅胶小柱净化过程检测水样和污泥样品中的人工合成麝香能够获得较好的回收率。最后利用这2种方法检测了北京某污水处理厂的进出水和脱水污泥中的佳乐麝香(HHCB)和吐纳麝香(AHTN)的含量,结果表明,进水中的HHCB和AHTN的含量分别为897~1270 ng·L-1和331~488 ng·L-1,出水中含量分别为201~226 ng·L-1和65~130 ng·L-1,脱水污泥中的含量分别为137~348 ng·g-1和64~138 ng·g-1

关键词: 水利工程影响, 河流生态系统, 服务功能, 评价方法

Abstract: The discharge of municipal wastewater and sewage sludge is the main pathway of synthetic musk entering soil environment. Parameters for the discharge are necessary for ecological risk assessment models, but few have been reported regarding the ecological risk assessment of synthetic musk in soil partly due to the shortage of convenient, quick and efficient techniques for the detection of synthetic musk in the environment. To promote the analytic methodology of synthetic musk, we compared and optimized the techniques for extracting two typical kinds of synthetic musk, galaxolide (HHCB) and tonalid (AHTN), in municipal wastewater by solid-phase extraction and liquid-liquid extraction, and in dehydrated sludge by soxhlet extraction and accelerated solvent extraction (ASE). The results showed that liquid-liquid extraction and ASE followed by silica gel column cleaning process had higher recovery in detecting synthetic musk in water and sludge samples. The two optimized methods were adopted to detect the HHCB and AHTN concentrations in the inflow and effluent water and the dehydrated sludge from a Beijing sewage treatment plant, and their concentrations were 897-1270 ng·L-1 and 331-488 ng·L-1 in inflow water, 201-226 ng·L-1 and 65-130 ng·L-1 in effluent water, and 137-348 ng·g-1 and 64-138 ng·g-1 in dehydrated sludge, respectively.

Key words: Hydraulic engineering, River ecosystem, Ecosystem services, Assessment approaches