ASTM D932-1985(2002) 水和水沉积物中嗜铁细菌含量的标准试验方法

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【英文标准名称】:StandardTestMethodforIronBacteriainWaterandWater-FormedDeposits
【原文标准名称】:水和水沉积物中嗜铁细菌含量的标准试验方法
【标准号】:ASTMD932-1985(2002)
【标准状态】:现行
【国别】:
【发布日期】:1985
【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】:D19.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;铁;水;沉积物;细菌纲;含量测定
【英文主题词】:ironbacteria;water;water-formeddeposits
【摘要】:Ironbacteriaisageneralclassificationformicroorganismsthatutilizeferrousironasasourceofenergyandarecharacterizedbythedepositionofferrichydroxideintheirmucilaginoussheaths.Theprocessiscontinuouswiththesegrowths,andoveraperiodoftimelargeaccumulationsofslimeybrowndepositscanoccur.Ironbacteriamayclogwaterlines,reduceheattransfer,andcausestaining;objectionableodorsmayarisefollowingdeathofthebacteria.Theorganicmatterinthewaterisconsequentlyincreased,andthisinturnfavorsthemultiplicationofotherbacteria.1.1Thistestmethodcoversthedeterminationofironbacteriabyexaminationunderthemicroscope.Themethodprovidesfortheidentificationofthefollowinggeneraofbacteriafoundinwaterandwater-formeddeposits:Siderocapsa,Gallionella(Dioymohelix),Sphaerotilus,Crenothrix,Leptothrix,andClonothrix.1.2Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50(EXAMINATIONOFWATERFORCHEMICALSUBSTANCES)
【页数】:7P.;A4
【正文语种】: