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(潮州韩山师范学院化生系,广东 521041) ,,。,,、、。 DeterminationofTotalSaltContentinAqueousSolutionwithConductionMethodLiWei LiuJunpeng(DepartmentofBiochemistry,HanshanNormalCollege,Guangdong 521041)Abstract Inthispaper,thedeterminationoftotalcontentinaqueoussolutionwithconduetionmethodhasbeenintrodueed.Theresultsshowthekofsaltsolutionisdirectlytopinlowerconcentration.Theproposedmethodisprovedtobemorerapid,simpleandaccuratethanthegravimetricmethod.Keywords conductivity totaltsaltcontent regressionanalysis ,[1,2],。。,,[3]。,、、、、。,,,[4]。、、[5,6]。(),Ca2+、Mg2+、Na+、K+、SO42-、Cl-、HCO-3SiO32-[7]。,。,,,,。,,。1 1.1 DDS-11A TG328 501MgSO4、CaCl2、NaHCO3、KNO3 1.2 MgSO4、CaCl2、NaHCO3、KNO31.00mg/L,·83·2002304。k,Q,QkN(N=Q/k)。N,,,,,。2 2.1 Mg2+、SO42-NKNO3、CaCl2、NaHCO3:20mg/L、40mg/L、80mg/L,Mg2+、SO42-,。1。(,mg/L,μs/cm。)1 Mg2+、SO42-NMg2+SO42-(ρ/mg.L-1)QKμs/cmN4.0415.961602280.7016.0623.941702410.7048.0831.921802580.69710.1039.901902710.70112.1247.882002870.6981,Mg2+、SO42-,N,,0.7002,S0.0028,Mg2+、SO42-N。2.2 Ca2+、Cl-NKNO3、MgSO4、NaHCO3:20mg/L、40mg/L、80mg/L,Ca2+、Cl-,。2。2 Ca2+、Cl-NCa2+Cl-(ρ/mg.L-1)QKμs/cmN7.2212.781602470.64712.6122.391752690.65021.6638.342003080.64928.8851.122203410.64536.1063.902403710.6472,Ca2+、Cl-,N1N,。0.6476,S0.002,Ca2+、Cl-N。2.3 K+、NO-3NMgSO4、CaCl2、NaHCO3:40mg/L、40mg/L、80mg/L,K+、NO-3,。3。3 K+、NO-3NK+NO-3(ρ/mg.L-1)QKμs/cmN1.7573.2431652610.6327.73412.2661752780.62911.60118.3991903000.63315.46824.5322003150.63519.33530.6652103340.6293,K+、NO-3,N1、2N,。0.6316,S0.0026,K+、NO-3N。2.4 Na+、HCO3-NKNO3、MgSO4、CaCl2:20mg/L、40mg/L、40mg/L,Na+、HCO3-,。4。4 Na+、HCO3-NNa+HCO3-(ρ/mg.L-1)QKμs/cmN10.94829.0521402400.58416.42143.5791602710.59020.53654.4641752940.59627.30972.6312003300.60632.84387.1572203590.6134:Na+、HCO3-,NN,。,0.5978,S0.012。HCO3-,HCO3-,,,N。·84·2002304,,,N,N。,N。2.5 N,,40～340mg/L,。5。5 NQKNQKN40600.6672002750.272801150.6962403350.7161201700.7063004300.7321602240.743404650.3715,40～340mg/L,N,。N。Qk,1:1 QK1,0.725,Q=0.725k,R2=0.9992,,Q,K。2.6 ,Q、k,。,6。,,,,S,。6 (ρ/mg.L-1) 16569758169.6267.270767971.136468728072.546771748271.857375818575.4,,,,,S5。65,p=0.95,F=n1+n2-2=5,tt0.05,5(),。,,、。,。,7。7 (mg)(mg)(mg)(%)13.4822.6526.18100.223.5645.3048.7599.837.2522.6530.2010147.1845.3052.2099.553.7722.6526.1098.87,98.8%～101%,。,(40～340mg.L-1),,,,。,,。1 ..:,1995:209～220·85·2002304① ② ① ① ① ③ ③(①东莞理工学院应用化学系,广东 523106(②暨南大学化学系,广州 510632 ③东莞市环境监测站,广东 523100) ,;,Al2(SO4)3CaCl2-CaOSO42-、Cl-、,BaCl2、(NH4)2C2O4SO42-Ca2+,;,,。,COD、BOD、、、93%、80%、97%、92%、80%。 PreparationofImmobilizedPoly-AluminumChloridebyTwoStepsandApplicationoftheAgglomeratingAgentRuanXiangyuan① BaiYan② LiJiu① WeiJianguo① SuYaling① LuWanhao③ DaiSonglin③(①DepartmentofAppliedChemistry,DongguanInstituteofTechnology,Guangdong 523106②DepartmentofChemistry,JinanUniversity,Guangzhou 510632③EnvironmentInspectiveStationofDongguan,Guangdong 523100)Abstract Gel-aluminumfilmwaspreparedbyprecipitatingaluminumhydroxideuniformlyfromalu-minumchloridesolutionandfixingthecompoundonthesurfaceoftheceramicgrainattemperatureof650℃for1.5h.Meantime,gel-aluminumchloridesolutionwasobtainedfromaluminumsulfatesolutionbyexchangede-compositionreactionwithCaCl2-CaO,separatingSO42-andCa2+fromgel-aluminumchloridesolutioninse-quence.Poly-aluminumchloridewasformedduringpolyreactioninaluminumchloridesolutiononthesurfaceoftheceramicgraincoveredwithgel-aluminumfilmandthermosettedat400℃and300℃bytwostepsfor1hor1.5haonce,respectively.Theimmobilizedpoly-aluminumchlorideshowedgoodreusabilityandwon-derfuladsorb-agglomeratingbehavior.Aftertreatmentfor6hintheprecipitate-agglomeratingbed,valuesofthechemicaloxygendemand(COD),thebiologicaloxygendemand(BOD),suspendedsubstances,sulfide,andcolordensityinshoes-materialprocessingwastewaterwerecutdownby93%,80%,97%,92%and80%,respectively.Keywords poly-aluminumchloride immobilizedagglomeratingagent treatmentforwastewater2 WaterQualityMeasurementTheModemAnalyticalTech-niqueseditedbyHarryB.Mark,Jr.JamesS.MattsonMAR-CELDEKKERINCNewYorkandBasel,19813 《》.:,19884 .(),1999,22(2):126～1305 ..:,19786 《》.().:,1989:112～1137 .().:,1997·86·2002304