检测过氧化氢

Analysis And Testing TechnologyApplication Julobo ： lVISCOAnalysis And Testing Technology Quantitative analysis ofhydrogen peroxide Application Content Content.. 2 Use. 2 Appliances.2 Electrodes 2 Reagents.2 Descriptionl..m 2 Method .4 Example. 5 Hints 5 Use The concentration of hydrogen peroxide in a solution is determined by redox titration with potassiumpermanganate. Appliances Titrator： TitroLine 6000/7000/7750 Burette： WA 20 Electrodes Electrode ： Pt 62， Pt 6280 or Pt 62 RG Electrolyte ： KCI (3 mol/L) Reagents Titration agent： potassium permanganate (KMnO4) 0，02mol/L (0.1 N) Standardization： with ferrous sulphate (Fe(II)) other reagents： sulfuric acid (H2SO4) ca. 25% Description Preparation of the sample The sample is weighed in accurately with four decimal places into a 100 mL beaker and filled up to 60 mLwith distilled water. After that 5 mL of a sulfuric acid (25%) are added. Titration Hydrogen peroxide is determined by titration with potassium permanganate. The reaction runs in an acidsolution and is based on the following chemical equation： chemical equation： 2MnOA4 +5H202+6H*→>2 Mn²++50T+8H0 The chemical equation shows that the ratio of permanganate and hydrogen peroxide is 2：5，what is allowed for the calculation below. calculation： H，0，%]5.c(KMnOa)·V(KMnO)-(KMnO)·M(HzO2)1002·m(H202)·1000 c(KMnO4)： concentration of the measure solution [mol/L] (here： 0，02 mol/L) V(KMnO4)： value of the measure solution [mL] t(KMnO4)： titre of the measure solution M(H202)： molar mass of H2O2 (34，0146 g/mol) m(H2O2)： amount of the sample That means that 1 ml 0.02 mol/l KMnO4= 1，701 mg H202 Please take the titration parameter out of the suitable method. To get proper results you have to make a titrefor the potassium permanganate with ferrous sulfate. Application Method Method data Method name： H202 Created at： Method type： Automatic titration Last modification： Measured value： mV Damping settings： None Titration mode： Dynamic Documentation： GLP Dynamic： Average Measuring speed / drift： User-defined： minimum holding time： 05 s maximum holding time： 12 s Measuring time： 03 s Drift： 50 mV/min Initial waiting time： 0s Titration direction： Increase Pretitration： 1.000 ml Delay time： 20 s End value： off EQ： On (1) Slope value： Steep Value： 700 Dosing parameter Dosingspeed：15.00%Filling speed：30sMaximum dosing volume：50.00 mlCalculation formulaH202：(EQ1-B)*T*M*F1/(W*F2)Mol (M)：1.70100Unit：%Decimal places：2m-value：EQ2*T*M*F1/(W*F2)Mol (M)：1.00000Unit：mmol/lDecimal places：2Blank value (B)：0.0000 mlTitre (T)：1.00000000Factor 1 (F1)：0.1000Weight (W)：manFactor 2 (F2)：1.0000Statistics：Off Example sample titration： Titrationsdiagramm ml mV/ml m dmV/dml Methodendaten Hints lf you have any questions concerning the application， you are welcome to contact us. JULABO TECHNOLOGY(Beijing)Co.，LTD 地址：北京市朝阳区酒仙桥东路1号院M8号楼C厅3层301室 Add ： Room 301，C hall，M8 office building，No.1 jiuxianqiao east road ，Chaoyang District，Beijing，China Tel.：4008092068 昌Fax： +86 (0)10 64390585 品E-Mail ： info@julabo.cn Web： www.julabo.cn， www.julabo-visco.com 优莱博技术(北京)有限公司 Page of Date： Date：age of