餐饮具中残留阴离子合成洗涤剂检测方法的改进-朱勤2012

—342—CHINESEJOURNALOFFOODHYGIENE2012244230051GB/T5750.4—2006。、5ml10ml50ml1min2500r/min5min650nm。0～1mg/Lr=0.9999100.8%n=9RSD=2.1%。、、。R155A1004-8456201204-0342-03ImprovementonthemethodofdetectinganionicsyntheticdetergentresiduesontablewareZhuQinWuGuAnhuiProvincialInstituteforFoodandDrugControlHefei230051ChinaAbstractObjectiveToimproveandoptimizethenationalstandardGB/T5750.4—2006testingmethodsforanionicsyntheticdetergentstoimproveexaminationefficiency．MethodsChangethemulti-stepextractiontoasinglecentrifugalextractionquantitativelyaddingextractsandsolventschloroformandmethyleneblueatone-timeandshakingstronglyafterhigh-speedcentrifugingtheabsorbanceoftheextractinthechloroformlayerwasmeasuredat650nmbyultravioletspectrophotometry．ResultsThecalibrationcurveswerelinearintherangeof0-1mg/LforsodiumdodecylbenzenesulfonateSDBSr=0.9999．Theaveragerecoverywas100.8%n=9RSD=2.1%Nostatisticallysignificantdifferencewiththenationalstandardmethodwasobserved．ConclusionTheadvantageoftheoptimizeddeterminationmethodwaslessamountofextractionsolventandshorterprocessingtime．Themethodissimplefastandaccurate．Itisreliableforthecontrolofanionicsyntheticdetergentresiduesontablewareandcangreatlyimprovetheefficiencyoftest．KeywordsAnionicsyntheticdetergenttablewaredetectionmethods2012-03-27。。GB14934—1994《》。11、6、。23cm。3———2。———1cm。。11.1TU-1901AnkeDL-6000BXS-204-————343—。、、、。、GB/T5750.4—20061.210μg/ml50ml70.00、0.25、0.50、1.00、1.50、2.00、2.50ml25ml0.00、2.50、5.00、10.00、15.00、20.00、25.00μg。2pH1mol/LNaOH0.5mol/L5ml10ml1min2500r/min5min。1cm650nm。。1.3GB14934—1994100ml。25ml1100ml。22.1y=0.0408x+0.0385r=0.9999n=7。0～1mg/L。2.23、、325、15、5μg99.63%～102.16%100.83%。1。2.3、、1、0.6、0.2mg/L6RSD1.2%～2.1%。2.40.2、0.6、1.0mg/L24h133。1Table1Recoverytestn=9μgμgμg%%%RSD%3.0025.11102.163.0014.9398.5899.633.0024.9198.1612.0215.45102.862.00012.0014.6297.47100.71100.832.112.0115.28101.8022.0125.07100.2422.0225.70102.72102.1622.0125.89103.522Table2Precisiontestmg/Lmg/LRSD%10.9981.0241.0190.9941.0221.0021.0101.220.5970.6020.5920.6110.6080.6130.6041.330.2060.210.2150.2030.2020.2080.2072.13Table3Stabilitytestmg/L24h48h72hRSD%RSD%0.20.22490.22460.22790.180.60.62580.64210.63250.820.711.049051.02711.03271.142.50.104μg。0.00416mg/L0.208μg。0.104/100/0.25=0.00832mg/L。。2.6200.05～1.00mg/L3t=2.0P＞0.054。4Table4Comparisionoftheresultswiththosedetectedbythenationalstandardmethodmg/L10.05030.0505110.5580.55220.1050.102120.6040.60130.1520.153130.6550.65740.2020.204140.7030.70350.2540.255150.7520.75560.3010.299160.8040.80270.3530.355170.8550.85780.4060.402180.9030.90690.4510.455190.9520.949100.5020.503201.0030.999—344—CHINESEJOURNALOFFOODHYGIENE2012244320min。5ml1/5。、。、、、。1．GB/T5750.4—2006S．2006.2《》．M．4．2005.3．J．200173櫥櫥櫥櫥櫥櫥櫥櫥櫥櫥櫥櫥毣毣毣毣273.《》GB28401—20121120129《》《》《》GB28401—201211。GB28401—2012GB28402—2012GB28403—2012GB28404—2012α—、、GB4789．5—2012GB/T4789．5—2003GB4789．13—2012GB/T4789．13—2003GB4789．34—2012GB/T4789．34—2008GB4789．38———2012GB/T4789．38—2008GB5009．94———2012GB/T5009．94—2003GB/T7630—1987GB/T22290—2008GB/T23199—2008GB9686———2012GB9686———1988GB14936—2012GB14936—1994。11．rar○