1492Ch24
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2020-01-11 19:44:54
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Manahan,StanleyE.CHEMICALANALYSISOFWATERANDWASTEWATEREnvironmentalChemistryBocaRaton:CRCPressLLC,200024CHEMICALANALYSISOFWATERANDWASTEWATER____________________________________________________24.1.GENERALASPECTSOFENVIRONMENTALCHEMICALANALYSISScientists’understandingoftheenvironmentcanonlybeasgoodastheirknow-ledgeoftheidentitiesandquantitiesofpollutantsandotherchemicalspeciesinwater,air,soil,andbiologicalsystems.Therefore,proven,state-of-the-arttechniquesofchemicalanalysis,properlyemployed,areessentialtoenvironmentalchemistry.Nowisaveryexcitingperiodintheevolutionofanalyticalchemistry,characterizedbythedevelopmentofnewandimprovedanalysistechniquesthatenabledetectionofmuchlowerlevelsofchemicalspeciesandavastlyincreaseddatathroughput.Thesedevelopmentsposesomechallenges.Becauseofthelowerdetectionlimitsofsomeinstruments,itisnowpossibletoseequantitiesofpollutantsthatwouldhaveescapeddetectionpreviously,resultingindifficultquestionsregardingthesettingofmaximumallowablelimitsofvariouspollutant
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