【英文标准名称】:StandardTestMethodforAnionsinWaterbyChemicallySuppressedIonChromatography
【原文标准名称】:用化学压缩离子色谱法对水中阴离子的标准试验方法
【标准号】:ASTMD4327-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:阴离子;水;色谱法;试验
【英文主题词】:anions;drinkingwater;ionchromatography;reagentwater;wastewater
【摘要】:Ionchromatographyprovidesforbothqualitativeandquantitativedeterminationofsevencommonanions,Fx2212;,Clx2212;,NO2x2212;,HPO4x2212;2,Brx2212;,NO3x2212;,andSO4x2212;2,inthemilligramperlitrerangefromasingleanalyticaloperationrequiringonlyafewmillilitresofsampleandtakingapproximately10to15minforcompletion.Note28212;ThistestmethodmaybeusedtodeterminefluorideifitspeakisinthewaterdipbyaddingonemLofeluent(at100x00D7;theconcentrationin8.3)toall100-mLvolumesofsamplesandstandardstonegatetheeffectofthewaterdip.(See6.3,andalsosee6.4.)Thequantitationofunretainedpeaksshouldbeavoided.Anionssuchaslowmolecularweightorganicacids(formate,acetate,propionate,etc.)thatareconductivecoelutewithfluorideandwouldbiasfluoridequantitationinsomedrinkingwatersandmostwastewaters.AnioncombinationssuchasClx2212;/Brx2212;andNO2x2212;/NO3x2212;,whichmaybedifficulttodistinguishbyotheranalyticalmethods,arereadilyseparatedbyionchromatography.1.1Thistestmethodcoversthesequentialdeterminationoffluoride,chloride,nitrite,ortho-phosphate,bromide,nitrate,andsulfateionsinwaterbychemicallysuppressedionchromatography.Note1Orderofelutionisdependentuponthecolumnused;see.1.2Thistestmethodisapplicabletodrinkingandwastewaters.Therangestestedforthistestmethodforeachanionwereasfollows(measuredinmg/L):Fluoride0.26to8.49Chloride0.78to26.0Nitrite-N0.36to12.0Bromide0.63to21.0Nitrate-N0.42to14.0o-Phosphate0.69to23.1Sulfate2.85to95.0