用激发发射荧光矩阵看水体腐殖质的光化学降解
- 岁月如歌
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2019-03-31 21:54:56
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用激发发射荧光矩阵看水体腐殖质的光化学降解RESEARCHPAPERCharacterizingthephotochemicaldegradationofaquatichumicsubstancesfromadystrophiclakeusingexcitation-emissionmatrixfluorescencespectroscopyandparallelfactoranalysisYukikoSenga1•SatoshiMoriai1•ChikaNaruoka1•RyomaNedachi1•ShigeharuTerui2Received:2March2016/Accepted:16May2016/Publishedonline:9June2016�TheJapaneseSocietyofLimnology2016AbstractThree-dimensionalexcitation-emissionmatrix(EEM)fluorescenceandparallelfactoranalysis(PAR-AFAC)wereusedtomonitorcompositionandreactivitychangescausedbythephotochemicaldegradationofaquatichumicsubstances(AHS)fromadystrophiclakeinKushiroWetland,Japan.AHS-richlakewaterwasexposedtothreetreatmentsinsummerandwinter2014:radiationwiththefullsolarwavelengthrange,radiationwiththe[320-nmsolarwavelengthrange,andnosolarradia-tion.IrradiationcausedAHS-likepeakstoshifttoshorterwavelengthsintheEEMcontourplots,implyingthatAHSphotodegradationcausedtheformationoflower-molecu-lar-weightfractionsormoresimplystructuredcomponents.Threecompone
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