基本信息
| 标准名称： | B系列气动基地式仪表三笔记录调节仪表 产品质量分等 |
| 替代情况： | JB/T57316-94 |
| 发布部门： | 全国工业过程测量和控制标委会 |
| 发布日期： | 1999-08-06 |
| 实施日期： | 2000-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
适用范围
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前言
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目录
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引用标准
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所属分类： 仪器 仪表 工业自动化仪表与控制装置 流量与物位仪表
【英文标准名称】:StandardTestMethodfor24-hBatch-TypeMeasurementofContaminantSorptionbySoilsandSediments
【原文标准名称】:24小时分批测量土壤和沉积物的污染物吸附作用的标准试验方法
【标准号】:ASTMD4646-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D34.01.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Organiccompounds--water;Oxidation-reductionpotential(ORP);Physicochemicalprocesses;PCBs(polychlorinatedbiphenyls);Photodegradation;Resourcerecovery;Rotarysolidwasteextractor;Sedimenttoxicitytesting;Soil;Solutesorption;Sorptioncapac
【摘要】:Thistestmethodismeanttoallowforarapid(24h)indexofageomedia''ssorptionaffinityforgivenchemicalsorleachateconstituents.Alargenumberofsamplesmayberunusingthistestmethodtodetermineacomparativerankingofthosesamples,basedupontheamountofsolutesorbedbythegeomedia,orbyvariousgeomediaorleachateconstituents.The24-htimeisusedtomakethetestconvenientandalsotominimizemicrobialdegradationwhichmaybeaprobleminlonger-timedprocedures.WhileKdvaluesaredirectlyapplicableforscreeningandcomparativerankingpurposes,theiruseinpredictivefieldapplicationsgenerallyrequirestheassumptionthatKdbeafixedvalue.Whilethistestmethodmaybeusefulindetermining24-hKdvaluesfornonvolatileorganicconstituents,interlaboratorytestinghasbeencarriedoutonlyforthenonvolatileinorganicspecies,arsenicandcadmium.However,theprocedurehasbeentestedforsinglelaboratoryprecisionwithpolychlorinatedbiphenyls(PCBs)andisbelievedtobeusefulforallstableandnonvolatileinorganic,andorganicconstituents.Thistestmethodisnotconsideredappropriateforvolatileconstituents.The24-htimelimitmaybesufficienttoreachasteady-stateKd.However,toreportthisdeterminationasasteady-stateKd,thistestmethodshouldbeconductedforintermediatetimes(forexample,12,18and22h)toensurethatthesolubleconcentrationsinthesolutionhavereachedasteadystateby24h.RefertoTestMethodD4319foranalternateprocedureoflongerduration.1.1Thistestmethoddescribesaprocedurefordeterminingthesorptionaffinityofwastesolutesbyunconsolidatedgeologicmaterialinaqueoussuspension.Thewastesolutemaybederivedfromavarietyofsourcessuchaswells,underdrainsystems,orlaboratorysolutionssuchasthoseproducedbywasteextractiontestsliketheTestMethodD3987shakeextractionmethod.1.2Thistestmethodisapplicableinscreeningandprovidingrelativerankingsofalargenumberofgeomediasamplesfortheirsorptionaffinityinaqueousleachate/geomediasuspensions.Thistestmethodmaynotexactlysimulatesorptioncharacteristicsthatwouldoccurinunperturbedgeologicsettings.1.3Whilethisproceduremaybeapplicabletobothorganicandinorganicconstituents,caremustbetakenwithrespecttothestabilityoftheparticularconstituentsandtheirpossiblelossesfromsolutionbysuchprocessesasdegradationbymicrobes,light,orhydrolysis.Thistestmethodshouldnotbeusedforvolatilechemicalconstituents(see6.1).1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z18
【国际标准分类号】:13_080_05
【页数】:4P.;A4
【正文语种】:英语