ASTM D4192-2008 原子吸收分光光度法对水中钾含量的标准试验方法
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【英文标准名称】:StandardTestMethodforPotassiuminWaterbyAtomicAbsorptionSpectrophotometry
【原文标准名称】:原子吸收分光光度法对水中钾含量的标准试验方法
【标准号】:ASTMD4192-2008
【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】:analysis;atomicabsorption;potassium;water;Atomicabsorptionspectrophotometry/spectroscopy;Inorganiccompounds--water;Potassiumcontent--water;Spectrophotometry--atomicabsorption(water/wastewater);Totalrecoverableelements(inwater);Waste
【摘要】:Potassiumoccursinrocksinaformthatisnoteasilysolubilized;therefore,thepotassiumcontentofnaturalwatersisusuallylow.Mostnaturalwaterscontainlessthan20mg/Lofpotassium,butwaterscontainingseveralhundredmilligramsperlitreareoccasionallyfound.Potassiumisessentialtoanimalnutrition,butaconcentrationof1000to2000mg/Linstockwaterisregardedastheextremelimitpermissible.1.1Thistestmethodcoversthedeterminationoflowamountsofpotassiuminwatershavinglowsolidscontent.Theapplicablerangeofthistestmethodis0.20to4.0mg/Lwhenusingthe766.5-nmresonanceline.Therangemaybeextendedupwardbydilutionofanappropriatealiquotofsampleorbyusingtheless-sensitive404.4-nmresonanceline.Manyworkershavefoundthatthistestmethodisreliableforpotassiumlevelsto0.02mg/L,butuseofthistestmethodatthislowlevelisdependentontheconfigurationoftheaspiratorandnebulizersystemsavailableintheatomicabsorptionspectrophotometeraswellastheskilloftheanalyst.Theprecisionandbiasdatapresentedareinsufficienttojustifyuseofthistestmethodinthe0.02-mg/Lrange.1.2Thistestmethodhasbeenusedsuccessfullywithspikedreagentwater.Itistheanalyst''sresponsibilitytoensurethevalidityofthistestmethodtootherlowdissolvedsolidsmatrices.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecificprecautionarystatement,seeNote3.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:Low-frequencycablesandwireswithPVCinsulationandPVCsheath;part7:distributionwireswithsolidconductors,PVCinsulated,polyamidecoated,insingles,pairs,triples,quadsandquintuples;amendmentNo.1topublication60189-7:1982
【原文标准名称】:聚氯乙烯绝缘和聚氯乙烯护套的低频电缆和电线第7部分:聚氯乙烯绝缘、聚酰胺涂覆的实心导体单芯、双芯、三芯、四芯和五芯配电用线修改1
【标准号】:IEC60189-7AMD1-1989
【标准状态】:作废
【国别】:国际
【发布日期】:1989-07-01
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC46C
【标准类型】:()
【标准水平】:()
【中文主题词】:绝缘线;绝缘;电线;配电线;聚氯乙烯绝缘材料;电缆;电缆;低频;绝缘电缆;低频电缆;聚氯乙烯;电气工程
【英文主题词】:electriccables;cables;lowfrequencies;electricwires;electricalengineering;distributionwires;low-frequencycables;polyvinylchloride;pvcinsulations;insulations;insulatedwires;insulatedcables
【摘要】:ThisstandardisLow-frequencycablesandwireswithPVCinsulationandPVCsheath;part7:distributionwireswithsolidconductors,PVCinsulated,polyamidecoated,insingles,pairs,triples,quadsandquintuples;amendmentNo.1topublication60189-7:1982.
【中国标准分类号】:K13;K12
【国际标准分类号】:29_060_10
【页数】:21P.;A4
【正文语种】:英语
【英文标准名称】:Resistancewelding-Spotweldingofaluminiumandaluminiumalloys-Weldability,weldingandtesting
【原文标准名称】:电阻焊接.铝和铝合金的点焊.可焊性、焊接和测试
【标准号】:BSENISO18595-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-09-28
【实施或试行日期】:2007-09-28
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:铝;铝合金;铝薄板材;定义;电极;精整;材料;特性;质量;耐力;电阻点焊;电阻焊接;剪切强度;规范(验收);点焊;测试;厚度;可焊性;焊接;电焊条;焊接工程;焊机;焊接工艺
【英文主题词】:Aluminium;Aluminiumalloys;Aluminiumsheets;Definitions;Electrodes;Finishes;Materials;Properties;Quality;Resistance;Resistancespotwelding;Resistancewelding;Shearstrength;Specification(approval);Spotwelding;Testing;Thickness;Weldability;Welding;Weldingelectrodes;Weldingengineering;Weldingmachines;Weldingprocesses
【摘要】:ISO18595:2007specifiesrequirementsforresistancespotweldinginthefabricationofassembliesofaluminiumsheet,extrusions(bothwork-andage-hardeningalloys)and/orcastmaterialcomprisingtwoorthreethicknessesofmetal,wherethemaximumsingle(sheet)thicknessofcomponentstobeweldediswithintherange0,6mmto6mm.ISO18595:2007isapplicabletotheweldingofsheetsorplatesofdissimilarthicknesswherethethicknessratioislessthanorequalto3:1.Itappliestotheweldingofthreethicknesseswherethetotalthicknessislessthanorequalto9mm.WeldingwiththefollowingtypesofmachinesiswithinthescopeofISO18595:2007:pedestalweldingmachines;gunwelders;automaticweldingequipmentwherethecomponentsarefedbyrobotsorautomaticfeedingequipment;multi-welders;roboticwelders.Theweldingofcoatedmaterial,e.g.zinccoatedoranodisedmaterial,isnotwithinthescopeofISO18595:2007.
【中国标准分类号】:J33
【国际标准分类号】:25_160_10
【页数】:30P.;A4
【正文语种】:英语