DIN EN 938-2009 人类用水处理用化学试剂亚氯酸钠
时间:2024-05-02 01:23:08 来源: 标准资料网 作者：标准资料网 阅读：9920
【英文标准名称】:Chemicalsusedfortreatmentofwaterintendedforhumanconsumption-Sodiumchlorite;EnglishversionofDINEN938:2009-04
【原文标准名称】:人类用水处理用化学试剂亚氯酸钠
【标准号】:DINEN938-2009
【标准状态】:现行
【国别】:德国
【发布日期】:2009-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:化学元素和无机化合物;化学试剂;亚氯酸盐;交付;饮水;饮用水;饮用水处理;作标记;纯度;钠;氯化钠;储存;试验;运输;处理;使用;水;水常规;水净化;水质;给水;水处理
【英文主题词】:Chemicalelementsandinorganiccompounds;Chemicals;Chlorites;Delivery;Drinkingwater;Drinkingwatertreatment;Marking;Potablewater;Purity;Sodium;Sodiumchlorite;Storage;Testing;Transport;Treatment;Use;Water;Waterpractice;Waterpurification;Waterquality;Watersupply;Watertreatment
【摘要】:ThisEuropeanStandardisapplicabletosodiumchloriteusedfortreatmentofwaterintendedforhumanconsumption.Itdescribesthecharacteristicsofsodiumchloriteandspecifiestherequirementsandthecorrespondingtestmethodsforsodiumchlorite.Itgivesinformationonitsuseinwatertreatment.
【中国标准分类号】:G77
【国际标准分类号】:71_100_80
【页数】:36P.;A4
【正文语种】:英语
【英文标准名称】:Corrosionofmetalsandalloys-Evaluationofstresscorrosioncrackingbythedropevaporationtest.
【原文标准名称】:金属和合金的腐蚀.使用滴落蒸发试验评估应力腐蚀断裂
【标准号】:NFA05-312-2008
【标准状态】:现行
【国别】:法国
【发布日期】:2008-07-01
【实施或试行日期】:2008-07-11
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:合金;腐蚀;腐蚀试验;定义;滴水试验;评估;蒸发;蒸发损失;材料接合;材料测试;测量;金属;试样;张应力裂纹腐蚀;试验设备;测试
【英文主题词】:Alloys;Corrosion;Corrosiontests;Definition;Definitions;Drippingwatertest;Evaluations;Evaporation;Evaporationlosses;Materialscombination;Materialstesting;Measurement;Metals;Samples;Tensioncrackcorrosion;Testequipment;Testing
【摘要】:
【中国标准分类号】:H10
【国际标准分类号】:77_060
【页数】:15P.;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforExaminationofWater-FormedDepositsbyChemicalMicroscopy
【原文标准名称】:用化学显微镜作水沉积物的检验的标准实施规程
【标准号】:ASTMD1245-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:(Practice)
【标准水平】:()
【中文主题词】:晶体学;沉积;微量化学;显微术;定性分析;折射指数
【英文主题词】:crystallography;deposits;microchemistry;microscopy;qualitativeanalysis;refractiveindex
【摘要】:Chemicalcompositionofwater-formeddepositsisamajorindicatorofproperorimproperchemicaltreatmentofprocesswater,andisoftenanindicatorofoperationalparametersaswell,forexample,temperaturecontrol.Thispracticeallowsforrapiddeterminationofconstituentspresentinthesedeposits,particularlythoseindicationsofimproperwatertreatment,sincetheyusuallyhaveverydistinctiveandeasilyrecognizedopticalproperties.Thispractice,whereapplicable,eliminatestheneedfordetailedchemicalanalysis,whichistime-consuming,andwhichdoesnotalwaysrevealhowcationsandanionsaremutuallybound.Qualitativeuseofthispracticeshouldbelimitedtothosedepositswhosecontrolisgenerallyknownorpredictable,basedontreatmentandfeedwatermineralcontent,andwhoseconstituentsarecrystalline,orinotherwaysopticallyormorphologicallydistinctive.Ifthesecriteriaarenotmet,othertechniquesofanalysisshouldbeused,suchasPracticeD2332orTestMethodsD3483,orboth.Quantitativeuseofthispracticeshouldbelimitedtoestimatesonly.Formoreprecisequantitativeresults,othermethodsshouldbeused(see5.3).1.1Thispracticedescribesaprocedurefortheexaminationofwater-formeddepositsbymeansofchemicalmicroscopy.Thispracticemaybeusedtocomplementothermethodsofexaminationofwater-formeddepositsasrecommendedinPracticesD2331oritmaybeusedalonewhennootherinstrumentationisavailableorwhenthesamplesizeisverysmall.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:13_060_50
【页数】:7P.;A4
【正文语种】: