广西师范大学学报（自然科学版） ›› 2014, Vol. 32 ›› Issue (4): 142-151.

• • 上一篇    

会仙湿地水体百草枯污染及其固定/转化率

蓝运华1, 江绍锋1, 龚有丽1, 李云飞1, 夏樱花1, 陆祖军1,2,3   

  1. 1.广西师范大学生命科学学院,广西桂林541004;
    2.珍稀濒危动植物生态与环境保护省部共建教育部重点实验室,广西桂林541004;
    3.广西高校野生动植物生态学重点实验室,广西桂林541004
  • 收稿日期:2014-06-11 发布日期:2018-09-26
  • 通讯作者: 陆祖军(1963-),男(壮族),广西百色人,广西师范大学教授,博士。E-mail:luzujun2002@aliyun.com
  • 基金资助:
    国家科学与技术计划支撑项目(2012BAC16B03);广西研究生教育创新计划项目(YCSZ2014090);广西壮族自治区自然科学基金(2013GXNSFAA019059)

Pollution and Fixed/Transformed Ratio of Paraquat in Water of Huixian Wetland

LAN Yun-hua1, JIANG Shao-feng1, GONG You-li1, LI Yun-fei1, XIA Ying-hua1, LU Zu-jun1,2,3   

  1. 1. College of Life Science, Guangxi Normal University, Guilin Guangxi 541004, China;
    2. Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection Guangxi Normal University, Ministry of Education, Guilin Guangxi 541004, China;
    3. Key Ecological Laboratory of Wild Animal and Plant Species of Guangxi Colleges and Universities, Guilin Guangxi 541004, China
  • Received:2014-06-11 Published:2018-09-26

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摘要： 采用微量热法结合高效液相色谱法,研究会仙湿地上覆水、周边居民饮用水百草枯污染状况,同时测定百草枯对湿地底泥微生物代谢活性的影响及对百草枯(0~120 μg/g)的固定/转化率。结果表明,居民饮用水尚检测不出百草枯,但湿地上覆水已检出(1~16.8 μg/kg);相同实验条件下,微生物热功率生长曲线表现出相似性,均出现第二指数生长期;只有120 μg/g(干土)者使微生物生长曲线明显往后推移;外加入的百草枯的转化率为52%~55%(96 h),意味着通过淋溶冲刷至流动水体中的量高达40%~50%。研究结果说明,百草枯对会仙湿地区域中哺乳动物和人类的健康可能存在潜在的安全隐患,建议将百草枯纳入附近水质指标检测范围。

关键词: 会仙湿地, 百草枯, 底泥微生物, 微量热法, 高效液相色谱法

Abstract: The pollution statue of paraquat in the overlying water of Huixian Wetland as well as the residents’ drinking water around the Wetland were investigated used microcalorimetric methods and high performance liquid chromatography (HPLC), meanwhile, the effect of paraquat on the activity of the wetland’s sediment microbes and its fixed/transformed ratio (concentration of 0~120 μg/g) were measured. The results showed that paraquat could not be detected in the drinking water but in the overlying water (1~16.8 μg/kg); microorganisms in the sediment showed similar power-time curves and all with a second logarithmic growth phase under the same laboratory conditions; only 120 μg/g(dry soil) paraquat obviously postponed the microbes growing;52%~55% of added Paraquat was fixed/transformed (96 h) by the sediment, which meant that as high as 40%~50% of the added does would be scoured or leached into the flowing water then transported far away from its occurence. The results indicated that there existed potential Paraquat security risks against mammals and human health in the region of Huixian Wetland, so the paraquat was suggested to be listed in the cheking range of water-quality index around this wetland.

Key words: Huixian Wetland, paraquat, sediment microbes, microcalorimetric methods, HPLC

中图分类号: 

  • X53
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[1] 余丽娟, 杨必俊. 桂林会仙湿地水体细菌学研究[J]. 广西师范大学学报（自然科学版）, 2015, 33(1): 159-164.
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