原子荧光光谱法测定水中痕量汞的方法优化研究-豆柴文库

您所在位置：网站首页 / 原子荧光光谱法测定水中痕量汞的方法优化研究.docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

原子荧光光谱法测定水中痕量汞的方法优化研究
Title:OptimizationofAtomicFluorescenceSpectrometryfortheDeterminationofTraceMercuryinWater
Abstract:
Mercurycontaminationinwaterhasbecomeasignificantenvironmentalconcernduetoitstoxiceffectsonhumanhealthandecosystems.Atomicfluorescencespectrometryoffersasensitiveandselectivemethodforthedeterminationoftracemercuryinwatersamples.Thispaperaimstooptimizetheexperimentalconditionsandparametersforatomicfluorescencespectrometrytoimproveitsanalyticalperformanceinthemeasurementoftracemercuryinwater.Severalkeyfactors,suchassamplepreparation,instrumentsettings,andcalibrationstandards,willbediscussedandoptimized.Theresultsdemonstratethattheoptimizedmethodprovidesenhancedsensitivity,accuracy,andreproducibility,makingitavaluabletoolforroutineanalysisofmercuryinwater.
1.Introduction:
Mercury(Hg)isanotoriousheavymetalthatposesserioushealthriskstohumansandtheenvironment.Inwaterbodies,mercurycanaccumulateinthefoodchain,leadingtobioaccumulationandbiomagnification.Therefore,itiscrucialtodevelopsensitiveandaccurateanalyticalmethodsforthedeterminationoftracemercuryinwater.Atomicfluorescencespectrometry(AFS)offersexcellentsensitivityandselectivityformercuryanalysis,makingitanidealtechniqueforthispurpose.
2.SamplePreparation:
Theefficiencyofsamplepreparationiscrucialfortheaccuratedeterminationoftracemercuryinwater.Severalmethods,suchascoldvaporatomicabsorptionspectrometry(CVAAS)andhydridegenerationatomicabsorptionspectrometry(HGAAS),havebeencommonlyemployedforsamplepretreatment.However,thesetechniquesoftensufferfromtime-consumingproceduresandpotentialinterferences.Inthisstudy,asimpleandefficientmethod,suchasaciddigestion,ultrasonicextraction,orsolid-phaseextraction,willbeselectedandoptimized.
3.Instrumentation:
Theatomicfluorescencespectrometerusedforthisstudyshouldbeequippedwithahigh-performancemercury/hydridegenerationsystem,ahigh-intensityexcitationsource,andasensitivefluorescencedetectionsystem.Theoptimizationofinstrumentalparameters,includingtheexcitationwavelength