摘要
利用气相色谱/质谱联用仪测定了湿地浮水植物水葫芦体内16种优先控制多环芳烃（PAHs）的含量,分析了PAHs的组成,并研究了体内脂肪含量对PAHs含量的影响。结果表明,不同进水方式（间歇和连续进水）时,水葫芦体内PAHs的含量差别不大,16种PAHs的含量分别为1 186.67 ng/g（dw）（间歇进水）和1 280.00 ng/g（dw）（连续进水）,且以2环、3环和4环为主。水葫芦体内,2环、3环、4环和5环PAHs在间歇进水百分比含量分别为27.55%、34.27%、23.31%和14.47%,连续进水百分比含量分别为29.43%、33.85%、23.81%和13.54%,6环PAHs在水葫芦体内没有检测到。水葫芦积累PAHs的量占湿地系统去除PAHs总量的1.16%~1.99%,其体内脂肪含量与其对PAHs的积累作用有一定的相关性,脂肪含量越高,PAHs的含量也越大。
The contents of 16 kinds of priority polycyclic aromatic hydrocarbons（ PAHs） in the water hyacinth in the constructed wetlands were measured by GC / MS. The PAHs compositions were determined,and the impact of fat content on PAHs content was analyzed. The results showed that the content of PAHs in the water hyacinth was little affected by different water feeding patterns（ intermittent or continuous feeding water）. The contents of 16 kinds of PAHs in intermittent and continuous feeding water conditions were 1 186. 67 ng / g（ dw） and1 280. 00 ng / g（ dw）,respectively. The most contents of PAHs are the 2 rings,3 rings and 4 rings. In water hyacinth,the percentages of 2 rings,3 rings,4 rings and 5 rings PAHs in the intermittent water were 27. 55%,34. 27%,23. 31% and 14. 47%,whereas there were 29. 43%,33. 85%,23. 81 % and 13. 54% in continuous water. 6 rings PAHs in water hyacinth was not detected. The enrichment rate of PAHs was 1. 16% —1. 99% for water hyacinth. There is some correlation between the concentration of fat content in water hyacinth and plants of PAHs,PAHs content increases with the increase of fat content.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第1期467-472,共6页
Chinese Journal of Environmental Engineering
基金
中央级公益性科研院所基本科研业务专项(2012-YSKY-14)
科技基础性工作专项(2015FY110900)
环境基准与风险评估国家重点实验室自由探索课题(2014-GOT-042-N-18)
关键词
多环芳烃
湿地
水葫芦
脂肪
polycyclic aromatic hydrocarbons
wetland
water hyacinth
fat
