90plus 纳米粒度仪应用案例-29
90plus纳米粒度仪应用案例
文献名：influenceofnanotubepreparationinaquaticbioassays
作者：alanj.kennedy1,*,jonasc.gunter2,marka.chappell1,jenniferd.goss3,matthews.hull4,roberta.kirgan1andjefferya.steevens2
1u.s.armyengineerresearchanddevelopmentcenter,environmentallaboratory,3909hallsferryroad,vicksburg,mississippi39180
2lunainnovations,3157statestreet,blacksburg,virginia24060,usa
3specpro,3909hallsferryroad,vicksburg,mississippi39180,usa
4virginiapolytechnicinstituteandstateuniversity,departmentofcivilandenvironmentalengineering,418durhamhall,blacksburg,virginia24061,usa
摘要：knowledgegapsinnanomaterialfateandtoxicitycurrentlylimittheabilityofriskassessmentstocharacterizetheenvironmentalimplicationsofnanomaterials.thisproblemisfurthercomplicatedbythelackofstandardizedcharacterizationandpreparationmethodologiesforresearcherstogaintheneededinformationtoassistriskassessors.inthepresentstudy,dataweregeneratedtodetermineifmultiwallednanotube(mwnt)fateandtoxicityarealteredbyengineeredsurfacemodificationsorbydifferentdispersalmethods.whiledissolvedorganicmatterwasagooddispersingagentofmwntsinwater,thehumicacidfractionwasamoreeffectivedispersantthanthefulvicacidfraction.whenstabilizedinorganicmatter,thefunctionalgroupattachedtothemwntcontrolleditstoxicity.underivatizedmwntsinducedrelativelymoderatetoxicitytoceriodaphniadubiaafter96h(25±19%survivalat26mg/l),whilehydrophilicgroups(hydroxyl,carboxyl)reducedthistoxicity(93±12%survivalat48mg/l).however,otherfunctionalgroups(alkyl,amine)increasedtoxicity(0±0%survivalat<15mg/l).indispersalmethodstudies,sonicationofmwntsincreasedfragmentationrelativetomagneticstirring.thesonicationtreatmentofmwntsalsoslightlyreducedthemortalityofc.dubiainthewatercolumnbutincreasedtoxicityinthesedimenttoleptocheirusplumulosusandhyalellaazteca.findingsinthepresentstudyindicatethatnanotubesengineeredforspecificapplicationsneedtobemanagedindependentlyandthatlaboratorymethodstodisperseandtestnanotubesinbioassaysneedtobestandardizedtoobtainrepeatableresultsforcomparisonofmaterials.
关键词：nanotube;toxicity;ceriodaphnia;leptocheirus;hyalella
蒸汽冷凝水回收泵操作规程
忻州重型货架主副架的区别
锚定“C位”，奥斯恩视环会之旅即将起航！
电子秤/称自动关机的处理办法
上海鹰牌衡器：电子汽车衡使用常识有哪些？
90plus 纳米粒度仪应用案例-29
污水处理设备优点
HB-GKF开关机械特性测试仪术语定义
摇臂钻床工作中钻头脱落怎么办
引伸计的等级及标定
6RA7025-6DV62-0-Z G44 G75 S00 K01 K11
洗浴中心污水处理设备
防火绝热岩棉板应用于建筑外墙的一道防火屏障
桥下金属防护栅栏网片
铝排冷库建造要求和冷库铝排管的特点
摩擦焊接机工作原理说明
减压阀FMD502选型
畜牧饲料水分测定仪应用行业-使用步骤
X-HC一体化霍尔转速传感器技术优势
无凸轮弹簧机的发展前景分析
文献名：influenceofnanotubepreparationinaquaticbioassays
作者：alanj.kennedy1,*,jonasc.gunter2,marka.chappell1,jenniferd.goss3,matthews.hull4,roberta.kirgan1andjefferya.steevens2
1u.s.armyengineerresearchanddevelopmentcenter,environmentallaboratory,3909hallsferryroad,vicksburg,mississippi39180
2lunainnovations,3157statestreet,blacksburg,virginia24060,usa
3specpro,3909hallsferryroad,vicksburg,mississippi39180,usa
4virginiapolytechnicinstituteandstateuniversity,departmentofcivilandenvironmentalengineering,418durhamhall,blacksburg,virginia24061,usa
摘要：knowledgegapsinnanomaterialfateandtoxicitycurrentlylimittheabilityofriskassessmentstocharacterizetheenvironmentalimplicationsofnanomaterials.thisproblemisfurthercomplicatedbythelackofstandardizedcharacterizationandpreparationmethodologiesforresearcherstogaintheneededinformationtoassistriskassessors.inthepresentstudy,dataweregeneratedtodetermineifmultiwallednanotube(mwnt)fateandtoxicityarealteredbyengineeredsurfacemodificationsorbydifferentdispersalmethods.whiledissolvedorganicmatterwasagooddispersingagentofmwntsinwater,thehumicacidfractionwasamoreeffectivedispersantthanthefulvicacidfraction.whenstabilizedinorganicmatter,thefunctionalgroupattachedtothemwntcontrolleditstoxicity.underivatizedmwntsinducedrelativelymoderatetoxicitytoceriodaphniadubiaafter96h(25±19%survivalat26mg/l),whilehydrophilicgroups(hydroxyl,carboxyl)reducedthistoxicity(93±12%survivalat48mg/l).however,otherfunctionalgroups(alkyl,amine)increasedtoxicity(0±0%survivalat<15mg/l).indispersalmethodstudies,sonicationofmwntsincreasedfragmentationrelativetomagneticstirring.thesonicationtreatmentofmwntsalsoslightlyreducedthemortalityofc.dubiainthewatercolumnbutincreasedtoxicityinthesedimenttoleptocheirusplumulosusandhyalellaazteca.findingsinthepresentstudyindicatethatnanotubesengineeredforspecificapplicationsneedtobemanagedindependentlyandthatlaboratorymethodstodisperseandtestnanotubesinbioassaysneedtobestandardizedtoobtainrepeatableresultsforcomparisonofmaterials.
关键词：nanotube;toxicity;ceriodaphnia;leptocheirus;hyalella
蒸汽冷凝水回收泵操作规程
忻州重型货架主副架的区别
锚定“C位”，奥斯恩视环会之旅即将起航！
电子秤/称自动关机的处理办法
上海鹰牌衡器：电子汽车衡使用常识有哪些？
90plus 纳米粒度仪应用案例-29
污水处理设备优点
HB-GKF开关机械特性测试仪术语定义
摇臂钻床工作中钻头脱落怎么办
引伸计的等级及标定
6RA7025-6DV62-0-Z G44 G75 S00 K01 K11
洗浴中心污水处理设备
防火绝热岩棉板应用于建筑外墙的一道防火屏障
桥下金属防护栅栏网片
铝排冷库建造要求和冷库铝排管的特点
摩擦焊接机工作原理说明
减压阀FMD502选型
畜牧饲料水分测定仪应用行业-使用步骤
X-HC一体化霍尔转速传感器技术优势
无凸轮弹簧机的发展前景分析