资源描述：
《论文摘要翻译》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、EnvironmentalToxicologyandChemistry,Vol.31.No.I.pp.II5-I21.2012；C201ISETAC；PriniedintheUSADOI:IO.IOO2/etc.7l9NanomaterialsintheEnvironmentDETECTINGNANOPARTICULATESILVERUSINGSINGLE-PARTICLEINDUCTIVELYCOUPLEDPLASMA-MASSSPECTROMETRYAbstract—Theenvironmentalp
2、revalenceofengineerednanomaterials,particularlynanoparticulatesilver(AgNP),isexpectedtoincreasesubstantially.TheubiquitoususeofcommercialproductscontainingAgNPmayresultintheirreleasetotheenvironment,andthepotentialforecologicaleffectsisunknown.Detectingen
3、gineerednanomaterialsisoneofthegreatestchallengesinquantifyingtheirrisks.Thus,itisimperativetodeveloptechniquescapableofmeasuringandcharacterizingexposures,whiledealingwiththeinnatedifficultiesofnanomaterialdetectioninenvironmentalsamples,suchaslow-engine
4、erednanomaterialconcentrations,aggregation,andcomplexmatrices・Heretheauthorsdemonstratetheuseofinductivelycoupledplasma-massspectrometry,operatedinasingle-particlecountingmode(SP-ICP-MS)，todetectandquantifyAgNP.Inthepresentstudy,twoAgNPproductsweremeasure
5、dbySP-ICP-MS,includingoneofpreciselymanufacturedsizeandshape,aswellasacommercialAgNP-containinghealthfoodproduct.Serialdilutions,filtration,andacidficationwereappliedtoconfirmthatthemethoddetectedparticles.Differentiationofdissolvedandparticulatesilver(Ag
6、)isafeatureofthetechnique・AnalysisoftwowastewatersamplesdemonstratedtheapplicabilityofSP-ICP-MSatnanogramsperliterAgconcentrations・Inthispilotstudy,AgNPwasfoundat100to200ng/Linthepresenceof50to500ng/LdissolvedAg.Themethodprovidestheanalyticalcapabilitytom
7、onitorAgandothermetalandmetaloxidenanoparticlesinfate,transport,stability,andtoxicitystudiesusingacommonlyavailablelaboratoryinstrument.RapidthroughputandelementspeftfcityareadditionalbenefitsofSP-ICP-MSasameasurementtoolformetalandmetaloxideengineerednan
8、oparticles.Environ・Toxicol.Chem・2012;31:115-121.环境中工程纳米材料的含量，尤其是纳米银，看起来正在增长。含纳米银商业产品的广泛使用，可能导致它们释放到环境当中，以及潜在的未知的生态效应。在对它们的危害进行量化的工作中，检测工程纳米材料是其中一个最大的挑战。所以，必须发展出可以测量和描绘其暴露水平的技术，以及解决在环境样品中纳米材料检测的固有缺陷，例如低工程纳米材料浓度，聚集性和复
