DIN EN 13368-1-2001 肥料.用离子色谱法测定螯合剂含量.第1部分:乙二胺四乙酸(EDTA)、羟乙基乙烯二胺三醋酸(HEDTA)和二乙酰三胺五醋酸(DTPA)
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【英文标准名称】:Fertilizers-Determinationofchelatingagentsinfertilizersbyionchromatography-Part1:EDTA,HEDTAandDTPA;GermanversionEN13368-1:2001
【原文标准名称】:肥料.用离子色谱法测定螯合剂含量.第1部分:乙二胺四乙酸(EDTA)、羟乙基乙烯二胺三醋酸(HEDTA)和二乙酰三胺五醋酸(DTPA)
【标准号】:DINEN13368-1-2001
【标准状态】:现行
【国别】:德国
【发布日期】:2001-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:测量规程;试验;土壤改良物质;肥料;螯合剂;EDTA;离子交换色谱法;色谱法;测定
【英文主题词】:Chelatingagents;Chromatography;Determination;Determinationprocedures;EDTA;Fertilizers;Ion-exchangechromatography;Soilimprovingmaterials;Testing
【摘要】:ThedocumentspecifiesaquantitativemethodforthedeterminationofthechelatingagentsEDTA,HEDTAandDTPAinfertilizersbyionchromatography.#,,#
【中国标准分类号】:B10
【国际标准分类号】:65_080
【页数】:9P;A4
【正文语种】:德语
基本信息
| 标准名称： | 氧气站设计规范(试行) |
| 中标分类： |
工程建设 >>
供热、供气、空调及制冷工程 >>
供气工程 |
| 替代情况： | 被GB 50030-1991代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1990-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1992-07-01 |
| 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： 工程建设 供热 供气 空调及制冷工程 供气工程
【英文标准名称】:StandardPracticeforFlowControlandTemperatureControlforOn-LineWaterSamplingandAnalysis
【原文标准名称】:用于在线水取样和分析的流量和温度控制标准规范
【标准号】:ASTMD5540-1994a(2003)
【标准状态】:现行
【国别】:
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D19.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:取样;水;状态调节;流动;水应用;在线监测系统;在线水取样;流速和流率;样品状态;样品冷却器;规程;控制;分析;温度控制;渣滓;离子沉积作用;在...之上;减压;温度补偿
【英文主题词】:crud;flowcontrol;ionicdeposition;on-lineanalysis;pressurereduction;sampleconditioning;samplecooler;temperaturecompensation;temperaturecontrol;
【摘要】:Sampleconditioningsystemsmustbedesignedtoaccommodateawiderangeofsamplesourcetemperaturesandpressures.Additionally,effortsmustbemadetoensurethattheresultantsamplehasnotbeenalteredduringtransportandconditioningandhasnotsufferedexcessivetransportdelay.Studieshaveshownthatsamplestreamswillexhibitminimaldepositionofionicandparticulatematteronwettedsurfacesatspecificflowrates(1x2013;5).45.1.1Toensurethatthephysicalandchemicalpropertiesofthesamplearepreserved,thisflowratemustbecontrolledthroughoutthesamplingprocess,regardlessofexpectedchangesofsourcetemperatureandpressure,forexample,duringstartuporchangingprocessoperatingconditions.Theneedtouseanalyzertemperaturecompensationmethodsisdependentontherequiredaccuracyofthemeasurement.Facilitiesdealingwithultra-purewaterwillrequirebothcloselycontrolledsampletemperatureandtemperaturecompensationtoensureaccuratemeasurements.Thetemperaturecanbecontrolledbyaddingasecondortrimcoolingstage.Thetemperaturecompensationmustbebasedonthespecificcontaminantsinthesamplebeinganalyzed.Inotherfacilitiesinwhichsomevariationinwaterchemistrycanbetolerated,theuseofeithertrimcoolingoraccuratetemperaturecompensationmayprovidesufficientaccuracyofprocessmeasurements.Thisdoesnotnegatethehighlyrecommendedpracticeofconstanttemperaturesampling,especiallyat25x00B0;C,asthemostprovenmethodofensuringrepeatableandcomparableanalyticalresults.Aseparateclassofanalysisexiststhatdoesnotrequireor,infact,cannotusethefullyconditionedsampleforaccurateresults.Forexample,thecollectionofcorrosionproductsamplesrequiresthatthesampleremainatnearfullsystempressure,butcooledbelowtheflashtemperature,inordertoensurearepresentativecollectionofparticulates.Onlysomeoftheprimaryconditioningcriteriaapplyinthiscase,asinothers.Temperaturecompensationisnotapplicablesincethematerialbeinganalyzedisnotinaliquidstate.1.1Thispracticecoverstheconditioningofaflowingwatersamplefortheprecisemeasurementofvariouschemicalandphysicalparametersofthewater,whethercontinuousorgrab.Thispracticeaddressestheconditioningofbothhigh-andlow-temperatureandpressuresamplestreams,whetherfromsteamorwater.1.2Thispracticeprovidesproceduresfortheprecisecontrolofsampleflowratetominimizechangesofthemeasuredvariable(s)duetoflowchanges.1.3Thispracticeprovidesproceduresfortheprecisecontrolofsampletemperaturetominimizechangesofthemeasuredvariable(s)duetotemperaturechanges.1.4ThevaluesstatedineitherSIorinch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P12
【国际标准分类号】:13_060_10;17_120_10
【页数】:4P.;A4
【正文语种】:
