【英文标准名称】:StandardTestMethodsforLeadinWater
【原文标准名称】:水中铅含量的试验方法
【标准号】:ASTMD3559-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D19.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:atomicabsorption;chelation-extraction;graphitefurnacespectrophotometry;lead;voltammetry;Atomicabsorption;Chelation-extraction;Differentialpulseanodicstrippingvoltammetry;Graphitefurnaceatomicabsorptionspectrometry(GFAAS);Inorgan
【摘要】:ThetestforleadisnecessarybecauseitisatoxicantandbecausethereisalimitspecifiedforleadinpotablewaterintheNationalInterimPrimaryDrinkingWaterRegulations.Thistestservestodeterminewhethertheleadcontentofpotablewaterisaboveorbelowtheacceptablelimit.1.1Thesetestmethodscoverthedeterminationofdissolvedandtotalrecoverableleadinwaterandwastewaterbyatomic-absorptionspectrophotometryanddifferentialpulseanodicstrippingvoltammetry.Fourtestmethodsareincludedasfollows:
ConcentrationRange
Sections
TestMethodAx2014;AtomicAbsorption,Direct
1.0to10mg/L
7to15
TestMethodBx2014;AtomicAbsorption,Chelation-Extraction
100to1000x03BC;g/L
16to24
TestMethodCx2014;DifferentialPulseAnodicStrippingVoltammetry
1to100x03BC;g/L
25to35
TestMethodDx2014;AtomicAbsorption,GraphiteFurnace
5to100x03BC;g/L
36to44
基本信息
| 标准名称： | 余甘子类树皮 |
| 英文名称： | Emblic leafflowers bark |
| 中标分类： |
农业、林业 >>
林业 >>
林产化工原料 |
| 替代情况： | 原标准号GB 7645-1987;被LY/T 1324-2012代替 |
| 发布日期： | 1987-03-05 |
| 实施日期： | 1987-10-01 |
| 首发日期： | |
| 作废日期： | 2012-07-01 |
| 出版日期： | |
| 页数： | 2页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 农业 林业 林业 林产化工原料
【英文标准名称】:StandardPracticeforDesigningaProcessforCleaningTechnicalGlasses
【原文标准名称】:工程玻璃清洗过程的设计的标准实施规程
【标准号】:ASTMC912-1993(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【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】:C14.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:cleaning;glass;solubility;solvents;technical
【摘要】:Manyofthelow-silicatechnicalglasseswhichcontainsolubleorreactiveoxidesrequireprocessingorinvolveapplicationsthatrequirecleaning.Veryoftenthesecleaningprocedureshaveevolvedoverseveraldecadesandareconsideredanart.Theyusuallycontainnumeroussteps,someofquestionablevalidity.Itisthepremiseofthispracticethatcleaningglasscanbemorescientific.Designofacleaningprocedureshouldinvolve(1)adefinitionofthesoiltoberemoved,(2)anawarenessoftheconstraintsimposedbytheglasscomposition,and(3)arationalselectionofalternativemethodsthatwillremovethesoilandleavetheglassinaconditionsuitableforitsintendedapplication.Thispracticeprovidesinformationtoassistinstep(3).Generalreferencesonglasscleaningandonvariousmethodsofevaluatingcleanlinessandassociatedinformationhasbeenpublished.1.1Thispracticecoversinformationthatwillpermitdesignofarationalcleaningprocedurethatcanbeusedwithaglassthatissomewhatsolubleinmanyaqueouschemicalsolutions.Typically,thistypeofglassisusedinapplicationssuchasopticalware,glass-to-metalseals,lowdielectriclossproducts,glassfibers,infraredtransmittingproducts,andproductsresistanttometallicvapors.1.2Inmostcases,thistypeofglasscontainshighconcentrationsofoxidesthattendtoreactwithanumberofaqueouschemicals.SuchoxidesincludeB2O3,Al2O3,R2O,RO,La2O3,ZnO,PbO,P2O5,andFe2O3.Themoreconventionalhigh-silicaglassesareusuallymorechemicallyresistant,butthecleaningprinciplesoutlinedherealsoapplytothem.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection4andTable1.
【中国标准分类号】:Q34
【国际标准分类号】:81_040_01
【页数】:6P.;A4
【正文语种】:英语