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1、AbstractAbstractInrecentyears,peoplehavebeenveryfamiliartotheconceptofenvironmentalpollution,soenvironmentalpollutionpreventionandmanagementalsobecomestheurgent.Amongthese,thepollutionofheavymetalionstotheenvironmentandlifecanbeseeneverywhere,thesewaged
2、ischargesofrefinery,mineminingandheavymetalsinplantsandanimalsthroughthelayersenrichmentinthefoodchain,etc.Thisarticlerepresentedthemethodtodetectthemetalionsinenvironmentalwatersamples,teaanddrugpackagingshellsbycombiningthepreconcentrationofdispersion
3、liquid-liquidmicroextractionandperformanceliquidchromatography（HPLC）.Chapter1Severalcommonmethodsfordetectingofmetalionswerereviewedinthischapter.Bysummarizingtheothermethods,wehighlightssomeadvantagesofhighperformanceliquidchromatography(HPLC)method,al
4、sosomeenrichmentmethodscombinatedwithhighperformanceliquidchromatographywererepresented.Chapter2Inthischapter,wehavebuildanewmethodtotesttraceamountsofnickel,cobalt,copperandmercuryinenvironmentliquidbyhighperformanceliquidchromatography(HPLC).Toconcent
5、ratetheionsintheenvironmentalsamplesbyusingdispersiveliquid-liquidmicroextractionasenrichmentmethod,sodiumdiethyldithiocarbamateascomplexingagent,greenextractionagentoflaurylalcoholasextractingagent,thenthesamplewasimpeledintothecolumnthathasfixedratioo
6、fmobilephasefordetection.Inthismethod,therequirementforinstrumentislow,thesensitivityishigh,itissuitableforquantitytargetmetalionsdetectioninwatersamples.Thismethodissuittodetectthetargetheavymetalsinenvironmentalsamplesduetothecelerity,delicacyanlowreq
7、uesttotheapparatus.Chapter3Peoplehavebeendoubtoftheintegrityofthepharmaceuticalindustrybecauseofthetoxicitychromiumcapsules.Chromiumhastwovalencestate,whiletrivalencychromiumisbeneficialtohumanbody,hexavalentchromiumisharmfulelementtohumanbody.Inthischa
8、pter,themethodofcombiningdispersiveliquid-liquidmicroextractionwithhighperformanceliquidchromatography(HPLC)wasusuedfortheseparationanddetectionofdifferentvalenceofchromiumionsinchromiumcapsules.Thismethodachieveddepurposeofsepar
