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苯基荧光酮-溴化十六烷基三甲胺体系分光光度法测定烟道灰中微量锗的研究.docx

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苯基荧光酮-溴化十六烷基三甲胺体系分光光度法测定烟道灰中微量锗的研究 Abstract Aspectrophotometricmethodhasbeendevelopedtodeterminetraceamountofgermaniuminflueashbasedonthereactionbetweenbenzophenonefluoresceinandcetyltrimethylammoniumbromide(CTAB)withgermanium.Themethodshowedgoodlinearityintherangeof0.5-15μg/mLwithacorrelationcoefficientof0.998andadetectionlimitof0.17μg/mL.Themethodwassuccessfullyappliedtothedeterminationofgermaniuminflueashsampleswithsatisfactoryresults. Introduction Germaniumisawidelyusedelementintheelectronicindustryduetoitsuniqueelectricalproperties.Withtheincreasingdemandforelectronicproducts,theproductionandconsumptionofgermaniumhavebeenrisingrapidly.However,themainsourceofgermanium,thezincandleadsmeltingprocess,hasledtotheaccumulationofgermaniumintheenvironment,causingharmtohumanhealthandtheecosystem.Therefore,theaccuratedeterminationoftraceamountsofgermaniuminenvironmentalsamples,especiallyinsolidmatricessuchasflueash,isofgreatimportance. Numerousanalyticalmethodshavebeendevelopedforthedeterminationofgermanium,includingatomicabsorptionspectrometry(AAS),inductivelycoupledplasma-massspectrometry(ICP-MS),andX-rayfluorescencespectrometry(XRF).However,thesemethodsareeitherexpensive,complex,orrequiresophisticatedinstruments.Therefore,thedevelopmentofasimple,cost-effective,andsensitivemethodforthedeterminationoftraceamountsofgermaniuminsolidmatricesisstillachallenge. Fluorescencespectrophotometryhasbeenwidelyappliedinchemicalanalysisduetoitshighsensitivityandselectivity.Benzophenonefluorescein(BPF)isanovelfluorescentreagentthathasbeenreportedtoformahighlyfluorescentcomplexwithgermaniumionsinsolution.However,thedirectdeterminationofgermaniuminsolidmatricesusingBPFisprohibitedduetotheinterferenceofmatrixcomponents.Cetyltrimethylammoniumbromide(CTAB)isacationicsurfactantcommonlyusedinenvironmentalanalysis.ThecombinationofBPFandCTABhasbeenreportedtoenhancethesolubilityandsensitivityofgermaniumdetectioninsolution.Therefore,thepresentstudyaimedtodevelopaspectrophotometricmethodbasedonthe