2014-09-27.1992-20141965-。417000—。—、19.97mg·L-18.02mg·L-12.00mg·L-1198.9%-100.8%、20.41mg·L-18.31mg·L-12.70mg·L-191.4%-101.2%。—。—O661A1673-0712201405-0133-05、、、1-2。。《》400mg/L1000mg/L。。、、、、、、。、、。。。3-45、6、—7-910-14。—15、。1.5201410JournalofHunanUniversityofHumanitiesScienceandTechnologyNo.5Oct.2014。2.FA2004UV-9100—101-2AB。1.1000mL、1000mL1000mL。2.125.00mL0.001mol/L25mL。50mL。1mL1。21000mL100mL250mL2mL。355mL3.005.007.009.0011.00mL0.001mol/L。PH6.5-10.51mL。2。410.00mL10.00mL0.05mol/LpH6.5-10.51mL。3。10.00mL4。10.00mL5。3.—11cm—1。21mmol·L-10、1.0、2.0、3.0、4.0、5.0、6.07.0mL50mL4mLHNO3HNO31l、4mL、2mL5g/LAgNO3Cl-0、0.02、0.04、0.06、0.08、0.10、0.120.14mmol/L10min。1cm—300nm。3、、5.00mL50mL4mLHNO3、4mL、2mLAgNO310min。1cm—300nm。11234CNaCl/mol·L-10.0010.0010.0010.001VNaCl/mL25.0025.0025.0025.00VAgNO3/mL26.2226.1826.2326.08V/mL0.100.100.100.10CAgNO3/mol·L-19.57×10-39.59×10-39.57×10-39.62×10-3/mol·L-19.59×10-3·431·140。1。1.2/mg/L×mL/mg/L×mL/mg/L/mg/L/%35.5×318.516.991.435.5×521.921.698.68.31×535.5×724.224.5101.235.5×925.825.9100.435.5×1127.026.698.5291.4%-101.2%。2.31234V/mL10.0010.0010.0010.00VAgNO3/mL3.804.043.803.84V/mL0.020.020.020.02/mg1.271.371.271.30/mg1.30/%-2.35.4-2.3010mLmm=CAgNO3×VAgNO3-V×35.5=9.59×10-3×3.80-0.02×35.5=1.27mg=CCl-1-C/C×100%=1.27-1.30/1.30×100%=-2.3%31000mL157mL1000mLm=m×15.7=20.41mgρ=m/1L=20.41mg·L-1。41234V/mL10.0010.0010.0010.00VAgNO3/mL0.920.820.800.82V/mL0.030.030.030.03/mg0.3030.2690.2620.269/mg0.276/%9.8-2.5-5.1-2.5。1000mL98mL1000mLm=m×9.8=2.70mgρ=m/1L=2.70mg·L-1。51234V/mL10.0010.0010.0010.00VAgNO3/mL3.613.433.413.38V/mL0.030.030.030.03/mg1.221.161.151.14/mg1.17/%4.3-0.85-1.7-2.6。1000mL71mL1000mLm=m×7.1=8.31mgρ=m/1L=8.31mg·L-1。3、453。1.1308.7nm。10、0.02、0.04、0.06、0.08、0.10、0.120.14mmol/L2y=1.2626x+0.02690.99701·531·140。22.6/mg/L×mL/mg/L×mL/mg/L/mg/L/%35.5×318.518.398.935.5×521.921.899.78.31×535.5×724.224.3100.435.5×925.826.0100.835.5×1127.026.999.5698.9%-100.8%。27。71234A0.09790.09770.09770.09800.0978CCl-1/mg·L-119.97/%0.1-0.1-0.10.2y=1.2626x+0.0269y=0.0978x=0.05615mmol·L-15mL50mLC=0.05615×10×0.5615=0.5615mmol·L-1ρ=0.5615×35.5mg·L-1=19.93mg·L-1。8。81234A0.05540.05570.05550.05540.0555CCl-1/mg·L-18.01/%-0.180.360-0.189。91234A0.03400.03390.03440.03420.0341CCl-1/mg·L-12.00/%-0.29-0.580.870.2910Cl-1/mg·L-1Cl-1/mg·L-1Cl-1/mg·L-120.418.312.7019.978.012.00。。、20.41mg·L-18.31mg·L-12.70mg·L-191.4%-101.2%。—308.7nm、19.97mg·L-18.02mg·L-11.99mg·L-198.9%-100.8%1。、—。·631·1401.M.2001210-213.2.GB/5750—1985S.2004.3.J.20072741-5.4.J.200321487-88.5.J.200744318-319.6.J.200834924-27.7.J.20004137-9.8.J.200027415-16.9.J.200827229-32.10.J.2006423219-220.11.J.2010891087-89.12.J.200737775-76.13.M.2.2001196-198.14.M.1992180-183.15.J.20074361163-1166.ContrastiveAnalysisonContentofChlorideIoninDifferentWaterXIAOXinSHENXiang-zhongDepartmentofChemistryandMaterialScienceHunanUniversityofHumanitiesScienceandTechnologyLoudi417000ChinaAbstractThecontentofchlorideionindifferentwatersampleswasdeterminedbyultraviolet-visiblespectrophotometryandMohrmethod.Nearthemaximumabsorptionwavelengthwithultraviolet-visiblespectrophotometrymethodbyaddingacetonepro-tectanttomeasuretheabsorbanceofchlorideionindifferentwatersamplesandthecontentsofchlorideionintapwaterlakewa-teranddrinkingwaterwere19.97mg·L-18.02mg·L-12.00mg·L-1therelativeaverageerrorwaslessthan1therecov-eryrateofstandardadditionwasfrom98.9%to100.8%whichexplainedexperimentalresultwasquitereliable.Withmohrmethodbycontrollingsolutionacidityandtheamountoftracertodeterminethecontentofchlorideionindifferentwatersamplesandthecontentsofchlorideionintapwaterlakewateranddrinkingwaterwere20.41mg·L-18.31mg·L-12.70mg·L-1therelativeaverageerrorwasbiggertherecoveryrateofstandardadditionwasfrom91.4%to101.2%whichexplainedtheex-perimentalresultwasreliableatthesametimealsoshowedthattheaccuracyadoptingtheseexperimentalmethodstodeterminethecontentofchlorideionindifferentwatersampleswashigh.Accordingtotheexperimentdataaccuracyandeasydegreeofex-perimentsultraviolet-visiblespectrophotometrywassuperiortoMohrmethod.KeywordschlorideionMohrmethodultraviolet-visiblespectrophotometrywatersampleanalysis·731·140