ASTM D6569-2005(2009) pH值在线测量的标准试验方法

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【英文标准名称】:StandardTestMethodforOn-LineMeasurementofpH1
【原文标准名称】:pH值在线测量的标准试验方法
【标准号】:ASTMD6569-2005(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:hydrogenion;on-line;pH;processmeasurement;Automatedprocedures--wateranalysis;Hydrogenionconcentration;ISFET(ion-selectivefield-effecttransducer);Onlinemonitoring(inwateranalysis);pH--water;Processstreamanalysis
【摘要】:pHisameasureofthehydrogenionactivityinwater.Itisamajorparameteraffectingthecorrosivityandscalingpropertiesofwater,biologicallifeinwaterandmanyapplicationsofchemicalprocesscontrol.Itisthereforeimportantinwaterpurification,useandwastetreatmentbeforereleasetotheenvironment.On-linepHmeasurementispreferredoverlaboratorymeasurementtoobtainrealtime,continuousvaluesforautomaticcontrolandmonitoringpurposes.1.1ThistestmethodcoversthecontinuousdeterminationofpHofwaterbyelectrometricmeasurementusingtheglass,theantimonyortheion-selectivefield-effecttransistor(ISFET)electrodeasthesensor.1.2Thistestmethoddoesnotcovermeasurementofsampleswithlessthan100x03BC;S/cmconductivity.RefertoTestMethodD5128.1.3ThistestmethoddoesnotcoverlaboratoryorgrabsamplemeasurementofpH.RefertoTestMethodD1293.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:71_040_50
【页数】:7P.;A4
【正文语种】:英语

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【英文标准名称】:Standardrepresentationofgeographicpointlocationbycoordinates
【原文标准名称】:使用坐标系的地理位置定位的标准表示法
【标准号】:ISO6709-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC211
【标准类型】:()
【标准水平】:()
【中文主题词】:坐标系(地理);数据交换;数据处理;数据表示;定义;深度;可扩展标记语言;地理信息;高度;信息交流;信息交换;标记语言;XML
【英文主题词】:Construction;Coordinates(geography);Dataexchange;Dataprocessing;Datarepresentation;Definitions;Depth;ExtensibleMarkupLanguage;Geographicinformation;Height;Informationexchange;Informationinterchange;Length;Markuplanguage;Position;Width;XML
【摘要】:ThisInternationalStandardisapplicabletotheinterchangeofcoordinatesdescribinggeographicpointlocation.Itspecifiestherepresentationofcoordinates,includinglatitudeandlongitude,tobeusedindatainterchange.Itadditionallyspecifiesrepresentationofhorizontalpointlocationusingcoordinatetypesotherthanlatitudeandlongitude.Italsospecifiestherepresentationofheightanddepththatmaybeassociatedwithhorizontalcoordinates.Representationincludesunitsofmeasureandcoordinateorder.ThisInternationalStandardisnotapplicabletotherepresentationofinformationheldwithincomputermemoriesduringprocessingandintheiruseinregistersofgeodeticcodesandparameters.ThisInternationalStandardsupportspointlocationrepresentationthroughtheeXtensibleMarkupLanguage(XML)and,recognizingtheneedforcompatibilitywiththepreviousversionofthisInternationalStandard,ISO6709:1983,allowsfortheuseofasinglealpha-numericstringtodescribepointlocations.Forcomputerdatainterchangeoflatitudeandlongitude,thisInternationalStandardgenerallysuggeststhatdecimaldegreesbeused.Itallowstheuseofsexagesimalnotations:degrees,minutesanddecimalminutesordegrees,minutes,secondsanddecimalseconds.ThisInternationalStandarddoesnotrequirespecialinternalprocedures,file-organizationtechniques,storagemedium,languages,etc.,tobeusedinitsimplementation.
【中国标准分类号】:L72
【国际标准分类号】:35_040
【页数】:28P;A4
【正文语种】:英语