摘要
以合肥市塘西河为研究对象,2014-2015年逐月对其水体水质和异味物质进行监测,同时结合塘西河浮游植物群落结构调查,综合分析塘西河异味物质变化规律及其影响因素.研究发现,塘西河异味暴发集中发生在夏季,夏季二甲基异莰醇浓度可达4909 ng/L,土腥素浓度可达197 ng/L.浮游植物群落结构调查表明,秋、冬季塘西河优势种类为蓝藻,春、夏季为硅藻、绿藻或隐藻.主成分分析得到5种主成分分别解释了光照、有机质、微生物活动、氮、磷等对水质的影响.相关性分析结果表明,氮是塘西河异味的限制因素,水体中氮浓度较高是异味产生的重要原因.
The spatio-temporal variation of odor compounds,together with water quality parameters and composition and quantity of algae,were monitored in Tangxi River,Hefei City,during 2014-2015. The results showed that the odor in Tangxi River outbroke in summer and the highest concentration of 2-methylisoborneol and geosmin were 4909 and 197 ng / L,respectively. Extensive algae composition analysis revealed that Cyanophyta was the dominant species in autumn and winter,while Euglenophyta,Chlorophyta or Cryptophyta were the dominant species in spring and summer. Principal component analysis showed that the water quality was influent by light,organic compound,microbial activity,nitrogen and phosphorus in water. Additionally,significant relationships were detected between nitrogen concentration and odor compounds,which indicated that nitrogen was one of the main reasons for odor problems in Tangxi River.
出处
《湖泊科学》
EI
CAS
CSCD
北大核心
2016年第2期312-318,共7页
Journal of Lake Sciences
基金
国家水体污染控制与治理科技重大专项(2011ZX07303-001)资助
