光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
3期
695-697
,共3页
谢超波%吴静%曹知平%杨林%钱易%吕清%张仁泉
謝超波%吳靜%曹知平%楊林%錢易%呂清%張仁泉
사초파%오정%조지평%양림%전역%려청%장인천
三维荧光光谱%水体%水质%预警
三維熒光光譜%水體%水質%預警
삼유형광광보%수체%수질%예경
Excitation-emission matrix%Water body%Water quality%Early-warning
荧光光谱因与水样一一对应而被称为“水质荧光指纹”,越来越多地被用于水环境监测。研究了大流量河道A河的水质荧光指纹特征及变化。结果表明,该河的三维荧光光谱中含有三个典型的荧光峰,分别在230/340,280/320和250/450 nm附近,而三个峰的强度变化很大,而且有突变的现象。同期的CODMn没有明显变化。研究表明,荧光指纹很适合显示大流量水体的水质变化,且可以弥补常规参数不能反映成分变化的不足,是水质预警的好工具。
熒光光譜因與水樣一一對應而被稱為“水質熒光指紋”,越來越多地被用于水環境鑑測。研究瞭大流量河道A河的水質熒光指紋特徵及變化。結果錶明,該河的三維熒光光譜中含有三箇典型的熒光峰,分彆在230/340,280/320和250/450 nm附近,而三箇峰的彊度變化很大,而且有突變的現象。同期的CODMn沒有明顯變化。研究錶明,熒光指紋很適閤顯示大流量水體的水質變化,且可以瀰補常規參數不能反映成分變化的不足,是水質預警的好工具。
형광광보인여수양일일대응이피칭위“수질형광지문”,월래월다지피용우수배경감측。연구료대류량하도A하적수질형광지문특정급변화。결과표명,해하적삼유형광광보중함유삼개전형적형광봉,분별재230/340,280/320화250/450 nm부근,이삼개봉적강도변화흔대,이차유돌변적현상。동기적CODMn몰유명현변화。연구표명,형광지문흔괄합현시대류량수체적수질변화,차가이미보상규삼수불능반영성분변화적불족,시수질예경적호공구。
In the present study ,the three-dimensional fluorescence spectra of River A with great flow rate were investigated . The results showed that there existed three unambiguous peaks in the excitation-emission matrix of River A at λex/λem of around 230/340 ,280/320 and 250/450 nm respectively .The fluorescence intensity varied significantly and had sharp fluctuation some-times .But the CODMn of the samples remained quite stable .This study indicated that fluorescence technique could demonstrate the pollution in the water bodies with great flow rate and furthermore make up for the deficiency of the conventional parameters related to organic pollution ,i .e .invalidation to exhibit the components of pollutants .It is a good tool for the early-warning of the w ater quality .