菲和壬基酚类物质在黄河兰州段水体颗粒物上的吸附行为分析

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1、Topic：StudyonSorptionofPhenanthreneandnonylphenolspecialsOntheparticlesinLanzhouReachoftheYellowRiverAbstractSorptionoforganicpollutantsontoparticles(suspendedparticles，sediments，etc)innaturalwatersystemisanimportantprocess，whichaffectsthetransport，degradation，fateandecologicalriskoforganic

2、pollutantssignificantly．TheYellowRiverisoneofthelargestriverinourcountry,andalsoithasthehighestcontentofsuspendedparticlematter(SPM)intheworld．LanzhouReachbelongstoupperreachesoftheYellowRivenItisamostimportantreachforthehighlevelofpollutiondischarge．ThecontentofNOM(naturalorganicmatters)is

3、verylow．TherearefewstudiesaboutthesorptionoforganicpollutantsontheselowNOMlevelparticlesuntilnow．Inthisthesis，concentrationandspatialdistributionofpolycyclicaromatichydrocarbon(PAils)，nonylphenolfNP)，andnonylphenolpolyethoxylate(NPnEO)welx：investigatedinfieldstudyinLanzhouReachofYellowRiver

4、．Andalsosorptionofphenanthrene，NP,andNPnEOonnaturalparticlesanddifferentcompoundsoftheparticlesWaSstudiedinlaboratoryusingnaturalparticles，clay(illites，kaoline)，andmetaloxidefartificialgoethite)aSsorhents．MechanismofsorptionWasanalyzedsubsequently．EffectsofpHvalue，pyrene，NP,andhumiaacidleve

5、lonthesorptionprocesswerealsostudied．Finally,desorptionofphenanthrenefromnaturalparticlesanditsinfluencingfactorswerealsostudied．Thefollowingwerethemainresults．PAHs，andNP／NPnEOwerewidelyexistedinallphaseofLanzhoureachoftheYellowRivenNaturalwaterparticlescartenrichthepollutantswithacertainex

6、tent(forPAHs：102_104，forNPnEO(n_O一3)：102M03)．ThereWaSself-purificationprocessexistingforthesepollutantsinthisreach．NPandNPnEO’SsorptionontheparticlesofLanzhoureachoftheYellowRiverhappenedquicklyinwater．ForNP,maximumsorptioncanbereachedin4hours，whileforNPnEO，amaximumSOrptionwasreachedat8hour

7、s，andthenadesorptionprocessinducedbybreakofmicellehappenedbeforethesorptionbalancewasachieved，Thedifferenceofsorptioncapabilityamongdifferentnaturalwaterparticleswasinconsistentwit}lthedifferenceoftheirNOMcontent．whichimpliedthatothercompoundsofthepartic