ASTM D4135-1982(2004) 用深度综合采样器采集可繁殖海洋浮游生物
作者:标准资料网 时间:2024-05-19 19:16:33 浏览:8168
来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:StandardPracticeforSamplingPhytoplanktonWithDepth-IntegratingSamplers
【原文标准名称】:用深度综合采样器采集可繁殖海洋浮游生物
【标准号】:ASTMD4135-1982(2004)
【标准状态】:现行
【国别】:
【发布日期】:1982
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E47.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:抽样方法;污染控制;水质;浮游生物;资源回收;工艺
【英文主题词】:
【摘要】:Theadvantagesofthedepth-integratingsamplersareasfollows:4.1.1Thesamplersprovidetheonlymeansbywhicharepresentativesampleofphytoplanktoncanbeobtainedfromastream.4.1.2Thevarietyofsamplerdesignsresultintheavailabilityofasamplerthatcanbeusedinvirtuallyallvelocitiesofflow.4.1.3Samplesofknownvolumescanbeobtained.4.1.4Aquantitativesampleisobtained.Nanno-andultraplanktonarenotlostfromthesamplingdevice.4.1.5Someofthesamplerscanbeusedinwaterupto55mdeep.4.1.6Manyofthesamplersarelight-weightandcanbeusedwithoutauxiliaryequipment.Thedisadvantagesofthedepth-integratingsamplersareasfollows:4.2.1Thesamplerscanbeusedonlyinflowingstreamshavingavelocitygreaterthan1.5ft3/s.4.2.2Someofthesamplersareheavyandrequiretheuseofauxiliaryequipment,suchasacranewithhoist.4.2.3Thecollectionofsamplescanbeverytime-consuming.Thereareseveralspecialconsiderationsthatshallbeobservedwhenusingdepth-integratingsamplers.Theyareasfollows:4.3.1Thenozzleofthesamplershouldbeinspectedperiodicallyforchips,cracks,orothersignsofdamageandreplacedasnecessary.4.3.2Thesamplefromeachverticalprofilemustbecombinedwithothersimilarsamplesinacommoncontainer.Ifthecombinedsampleissubsequentlysubdivided,itmustbethoroughlymixedbeforedoingso.1.1Thispracticecoverstheproceduresforobtainingquantitativesamplesofaphytoplanktoncommunitybyuseofdepth-integratingsampler.Themethodissuitableforuseinflowingwaters.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z04
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:
【原文标准名称】:用深度综合采样器采集可繁殖海洋浮游生物
【标准号】:ASTMD4135-1982(2004)
【标准状态】:现行
【国别】:
【发布日期】:1982
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E47.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:抽样方法;污染控制;水质;浮游生物;资源回收;工艺
【英文主题词】:
【摘要】:Theadvantagesofthedepth-integratingsamplersareasfollows:4.1.1Thesamplersprovidetheonlymeansbywhicharepresentativesampleofphytoplanktoncanbeobtainedfromastream.4.1.2Thevarietyofsamplerdesignsresultintheavailabilityofasamplerthatcanbeusedinvirtuallyallvelocitiesofflow.4.1.3Samplesofknownvolumescanbeobtained.4.1.4Aquantitativesampleisobtained.Nanno-andultraplanktonarenotlostfromthesamplingdevice.4.1.5Someofthesamplerscanbeusedinwaterupto55mdeep.4.1.6Manyofthesamplersarelight-weightandcanbeusedwithoutauxiliaryequipment.Thedisadvantagesofthedepth-integratingsamplersareasfollows:4.2.1Thesamplerscanbeusedonlyinflowingstreamshavingavelocitygreaterthan1.5ft3/s.4.2.2Someofthesamplersareheavyandrequiretheuseofauxiliaryequipment,suchasacranewithhoist.4.2.3Thecollectionofsamplescanbeverytime-consuming.Thereareseveralspecialconsiderationsthatshallbeobservedwhenusingdepth-integratingsamplers.Theyareasfollows:4.3.1Thenozzleofthesamplershouldbeinspectedperiodicallyforchips,cracks,orothersignsofdamageandreplacedasnecessary.4.3.2Thesamplefromeachverticalprofilemustbecombinedwithothersimilarsamplesinacommoncontainer.Ifthecombinedsampleissubsequentlysubdivided,itmustbethoroughlymixedbeforedoingso.1.1Thispracticecoverstheproceduresforobtainingquantitativesamplesofaphytoplanktoncommunitybyuseofdepth-integratingsampler.Themethodissuitableforuseinflowingwaters.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z04
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:
下载地址: 点击此处下载