固体废弃物的酸碱度与浸提剂pH值的相关性研究

22,1Vol22,No1,pp168-17020022SpectroscopyandSpectralAnalysisFebruary,2002pH陆莹,王志伟,310007pH:pH,pH(pH=2~4),,pH=4~8,,pHpH,,,,,,pH;pH;;:O65731:A:1000-0593(2002)01-0168-03:2000-12-17,:2001-08-18:,1961,,,,,,,,,pH,pH[1~3],,pHpHpH,111180-80;DHZ-C;pHS-3CpH;70212:GB5086-85;GB/T1555512-1995;--[4]Tab1TheamountofextractedmetalsandthepHvalueofsamples(mgkg-1)1#2#3#pH544930715128844107Cu119103630103735103112470Pb046103288100103283Cd391Zn305103184103584995103262103Mn543349103105103Cr713103367103520103565153103Fe01631060323106552103Ni125103146103133103402684221,,,,11,22pHpH,2pH,,pH,pH1262~1297,pH,Tab2TheextractedmetalsandthepHvalueoftheextractingsolventspH/(mgL-1)CuPbZnNiCr3+Cr6+Fe2002425935623001164554401#4004643173546004643163528004763163492001980223844713001920143864542#4001900143714566001890163964728001900163944722001061792698903001081802708813#400104172256877600100162262830800111177255896200300400600800071602580208021202242003004006008001341401441461543312,1#pH544,pH,pH4,2#3#,,,,,,,pH,,[1],,pH,,,,,pH32pH,pH,,,,,,1995pH56169140%[5]1992~1994,pH85%350~650,pH330[6],pH,,pH=6,,,,,,,,,,,,,,4,,,,,pH,pH,,,,,,,,,,,,,,,[1]QiWeng-qi,etal().EnvironmentalMonitoringinChina(),1997,13(2):10.[2]LIGuo-gang,etal().ShanghaiEnvironmentalSciences(),1995,14(10):4.[3]LIGuo-gang,etal().ShanghaiEnvironmentalSciences(),1995,14(10):7.[4].,:,1989,445.[5]LIUBing-jiang,etal().ChinaEnvironmentalSciences(),1998,18(1):1.[6]LIZhu-guo().ChinaEnvironmentalSciences(),1999,19(5):436.AStudyabouttheInterrelationbetweenthepHValuesofSolidWastesandExtractingSolventsLUYing,WANGZh-iweiHangzhouEnvironmentalMonitoringCenter,Hangzhou310007,ChinaAbstractApreliminarystudyabouttheinterrelationbetweenthepHvaluesofsolidwastesandextractingsolventshasbeenconduct-ed.TheresultshowedthattheamountoftracemetalsdissolvedwassignificantlydifferentwhenthesolidwastesampleswithdifferentpHvalueswereextractedbyextractingsolventsindifferentpHvalues.TheamountoftracemetalswasgreatforacidicwastesamplesinthelowpH(pH24)extractingsolvents.WhenthepHvaluesoftheextractingsolventswereatpH48,theamountofheavymetalsdissolvedreachedtheirendpoints.Forneutralsolidwastes,theamountofdissolvedmetalswerenotlargelyeffectedbythepHvaluesoftheextractingsolvents.Forbasicsolidwaste,therewerenotnoticeableamountofmetalsweredissolvedintheextractingsolventswithdifferentpHvalues.Moreover,thecompoundssformationofthemetalsinthesampleshadadirecteffectontheamountofmetalsdis-solved.Thisstudysuggestedthatitcouldbeveryenvironmentallyharmfulwhenimproperlystoredorburiedsolidwasteswerewashedorimmersedinacidrains.ThearticlealsosuggestedthatregionalenvironmentaltestingstandardsshouldbeestablishedbasedonthepHvalueoftheprecipitationinthearea.KeywordsSolidwastes;pHvalue;Extractingsolvents;Studyabouttheinterrelation(ReceivedDec.17,2000;acceptedAug.18,2001)17022