叶绿素荧光检测技术及仪器的研究

Research on the technique and instrument of chlorophyll fluorescence measurement

湖泊水华的爆发给人们日常生活和生产带来很大的危害,水体富营养化、水中浮游植物和藻类的大量繁殖是产生水华的主要原因。水中叶绿素可作为水体营养的跟踪指示器,快速检测水中的叶绿素含量可以预警水体营养程度和水质污染。基于叶绿素荧光的光谱特征,提出了一种可快速现场用的水体营养检测技术、研制了叶绿素荧光检测仪器,通过现场实验跟踪监测了天津大学敬业湖水体在春夏之交的浮游植物含量的分布、生长和气候变化的影响。

Water bloom in lakes brings a great danger to daily life and production,which is primarily due to water eutrophication and rapid increase of the amount of algae and phytoplankton.As an indicator of water eutrophication,rapid detection of chlorophyll content in water can predict the extent of water eutrophication and pollution.Based on the spectral characteristics of chlorophyll fluorescence,this paper reports a new technique for the measurement of eutrophication and a chlorophyll fluorescence detecting instrument.The sensitivity of the instrument is up to 3×10-6.A lot of experiments of tracking the distribution and growth of phytoplankton,and the impact of climate change were carried out in the Jingye lake in Tianjin University.