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【英文标准名称】:Waterquality-Determinationofinhibitionofgasproductionofanaerobicbacteria-Part1:Generaltest
【原文标准名称】:水质.厌气菌的气体生成的抑制测定.第1部分:一般试验
【标准号】:ISO13641-1-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-05
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC147
【标准类型】:()
【标准水平】:()
【中文主题词】:抑制;细菌纲;毒性;毒理测定;生物分析和试验;水质;微生物;厌气菌
【英文主题词】:Anaerobicbacteria;Bacteria;Biologicalanalysisandtesting;Inhibition;Microorganisms;Toxicity;Toxicologicaltesting;Waterquality
【摘要】:ThispartofISO13641specifiesascreeningmethodforassessingthepotentialtoxicityofsubstances,mixtures,surfacewaters,groundwatersandwastewaters,effluents,sludgesorotherenvironmentalsamplesbydeterminingtheproductionofbiogas(carbondioxideandmethane)fromtheanaerobicdigestionofsewagesludgeoverperiodsofupto3days.Thegrowthrateofanaerobicbacteriaismuchlowercomparedwiththatofaerobicmicroorganisms.Forthisreason,thetestperiodsarelongerforanaerobicmethodsthanthoseusedforaerobicbacteria.Thismethodisapplicabletosubstances,solubleorinsolubleinwater,includingvolatilechemicals(seeReference[1]intheBibliography).NOTESpecialcareisnecessarywithcompoundsoflowwater-solubility,andinthesecases,seeforexample,ISO10634.ForgeneralinformationonbiotestingseeISO5667-16.Thismethodcanprovideinformationthatisusefulinpredictingthelikelyeffectofatestmaterialonbiogasproductioninanaerobicdigesters.Forexample,onlylongertests,whichsimulateworkingdigestersmorecloselycanindicatewhetheradaptationofthemicroorganismstothetestmaterialcanoccurorwhethercompoundslikelytobeadsorbedontosludgecanbuilduptoatoxicconcentrationoveralongerperiodthanallowedinthistest.InformationobtainedbythispartofISO13641canalsobehelpfulinchoosingsuitableinitialmassconcentrationsforanaerobicbiodegradabilitytests(e.g.ISO11734).However,thispartofISO13641usingundilutedsludgeislesssuitablefortestingdilutedigestingsludgethanthemethoddescribedinPart2ofISO13641wherethemassconcentrationsareahundredfoldmoredilute.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_70
【页数】:14P;A4
【正文语种】:英语


Product Code:SAE AMS3270
Title:Chloroprene (Cr) Rubber Sheet, Cotton Fabric Reinforced, Weather Resistant
Issuing Committee:Ams P Polymeric Materials Committee
Scope:This specification covers cotton-fabric-reinforced chloroprene (CR) rubber in the form of sheet. Primarily for parts, such as gaskets and seals, requiring resistance to weather, moderate heat, water, and petroleum-base lubricating oil.