废水中溶解气体检测方案

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检测样品: 废水
检测项目: 物理指标
浏览次数: 647
发布时间: 2015-01-11
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优莱博技术(北京)有限公司

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200 ml sample (measuring cylinder; for chlorine concentrations > 2 mg/l use less sample and fill up with dist. water to 200 ml) are filled into a 250 ml beaker. Add 1 ml KI solution and 1 ml buffer solution pH = 4.0 and titrate with the phenylarsine oxide to an equivalence point (potentiometry) or μA endpoint (amperometry)

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Julabo:VISCOAnalysis And Testing TechnologyApplication Application Use This method is used for the quantitative determination of Chlorine, Hypochlorite and Chloramine inwater and wastewater using the potentiometric or Dead Stop titration method with phenylarisine oxideas titrant. The method is used for chlorine concentrations < 5 mg/L. The endpoint can be detectedpotentiometric using a combined platinum electrode (recommended) or amperometric using a doubleplatinum electrode. Appliances Titrator: TL 7000 Basic device Magnetic stirrer TM 235 10 or 5 mL Exchange unit WA 10/WA 5, with amber glass bottle for the titrant, complete Electrodes Electrode: Pt 62 or Pt 62 RG combination electrode with a cable L 1 A or Pt 1200 for amperometric indication with cable L 1 NN Reagents Titrant: phenylarsine oxide (PAO) standard solution 0,00564 N Acetate buffer pH= 4 NaOH 1 mol/l Potassium iodide solution 5 % Distilled/DI water Application Description Preparation of acetate buffer solution pH=4 14,6 g Natriumacetate for analysis are dissolved in 40 ml Dl water. To this solution is added 48 ml ofglacial Aceticacide“Analytical grade". Then it is filled up with DI water to 100 ml Preparation of the potassium iodide solution 5 % 5 g of potassium iodide (analysis grade) are dissolved in 60 ml DI water, then it is filled up with DIwater to 100 ml. This solution has to be freshly prepared every two days. Preparation of NaOH 1 mol/l 4 g of NaOH for analysis dissolved in 60 ml DI water, then it is filled up with DI water to 100 ml Total Chlorine 200 ml sample (measuring cylinder; for chlorine concentrations > 2 mg/l use less sample and fill upwith dist. water to 200 ml) are filled into a 250 ml beaker. Add 1 ml KI solution and 1 ml buffer solutionpH=4.0 and titrate with the phenylarsine oxide to an equivalence point (potentiometry) or uA endpoint(amperometry) Free (residual) Chlorine 200 ml sample (measuring cylinder; for chlorine concentration > 5 mg/l use less sample and fill up withdist. water to 200 ml) are filled into a 250 ml beaker. Add 1 ml Kl and 1 ml NaOH solution and titratewith the phenylarsine oxide to an equivalence point (potentiometry) or pA endpoint (amperometry) Application Examples Potentiometric titration > 0,2 mg/I Cl2 GLP documentation Titration graph 0.91 ml345.3 mV Method name: Chlorine (dyn.) Titration duration: 3 m 34 s End date: 06.02.14 End time: 15:50:53 Titration data Sample ID: 1 ppm Cl2 Pattem: 200.000 ml Stait mV: 418.8 mV End mV: 311.9 mV EQ: 0.908 ml / 345.3 mV Chlorine: 0.91mg/l Calculation formula Chlorine: (EQ1-B)*T*M*F1/(V*F2) Mol(M): 1.00000 Blank value(B): 0.0000 ml Titre (T): 1.00000000 (m) Factor 1 (F1): 200.0000 Pattem (V): 200.000 ml (m) Factor 2 (F2): 1.0000 Statistics: Off Application Method name: Chlorine (dyn.) Created at: Method type: Automatic titration Last modification: Measured value: mV Damping settings: None Titration mode: Dynamic Documentation: GLP Dynamic: User-defined: Max. step size: 0.2000 ml Slope max ml: 15.00 mV/min Min. step size: 0.0100 ml Slope min m: 120.00 mV/min Measuring speed / drift: User-defined: minimum holding time: 03s maximum holding time: 15 s Measuring time: 03 s Drift: 10 mV/min Initial waiting time: 0s Titration direction: Decrease Pretitration: Off End value: Off EQ: On (1) Slope value: User-defined Value: 400 Dosing parameter Dosing speed: 100.00% Filling speed: 30 s Maximum dosing volume: 1.50 ml Unit values Unit size: 10ml Unit ID: 10035619 Reagent: PAO Batch ID: no entry Concentration [mol/l]: 0.00564 Determined at: 02/01/14 3:56:00 Expire date: Opened/compounded: Test according ISO 8655: Last modification: 01/31/14 19:56:01 Application Potentiometric titration < 0,2 mg/l Cl2 GLP documentation Titration graph 300,0 0.025 0.05 0.075 0.1 0.125 0.15 0.175 0.2 ·mV/ml · dmV/dml . 0.19 ml 346.9mV Method data Application Dosing parameter Unit values Unit size: 10ml Unit ID: 10035619 Reagent: PAO Batch ID: no entry Concentration [mol/l]: 0.00564 Determined at: 02/01/14 3:56:00Expire date: Opened/compounded: Test according ISO 8655: Last modification: 01/31/1419:56:01 Application Dead stop titration > 0,2 mg/I Cl2 GLP documentation Titration graph l0.1 pA0.971ml ·ml 0.971ml ·pA/ml Method data Application Method data overall view Method name: Chlorine (DS) Created at: Method type: Automatic titration Last modification: Measured value: uA Titration mode: d-stop Documentation: GLP Linear steps: 0.010 ml Measuring speed / drift: 2s Initial waiting time: 0 s Titration direction: Decrease Pretitration: Off Endpoint: 0.1 pA delta endpoint: 2.0 pA Endpoint delay: 5s Polarization voltage: 100 mV Dosing parameter Dosing speed: 25.00 % Filling speed: 30 s Maximum dosing volume: 2.00 ml Unit values Unit size: 10ml Unit ID: 10035619 Reagent: PAO Batch ID: no entry Concentration [mol/l]: 0.00564 Determined at: 02/01/143:56:00 Expire date: Opened/compounded: Test according ISO 8655: Last modification: 01/31/1419:56:01 Application Dead stop titration < 0,2 mg/I Cl2 GLP documentation Titration graph uA 0,2 ppm Cl2 0.875 0.75 0.625 0.5 0.375 0.25 0.125 0.1 pA 0,0 0.168 ml -ml 0.025 0.05 0.075 0.1 0.125 0.15 · pA/ml Method data Method name: Chlorine (DS) Titration duration: 1m 18 s End date: 06.02.14 End time: 17:13:07 Titration data Sample ID: 0,2 ppm Cl2 Pattem: 200.000 ml Start pA: 0.790 pA End pA: 0.072 pA EP: 0.168 ml/ 0.1 pA Chlorine: 0.17 mg/l Calculation formula Chlorine: (EP-B)*T*M*F1/(V*F2) Mol (M): 1.00000 Blank value (B): 0.0000 ml Titre (T): 1.00000000 (m) Factor 1 (F1): 200.0000 Pattem (V): 200.000 ml (m) Factor 2 (F2): 1.0000 Statistics: Off Application Method data overall view Method name: Chlorine (DS) Created at: Method type: Automatic titration Last modification: Measured value: uA Titration mode: d-stop Documentation: GLP Linear steps: 0.005 ml Measuring speed / drift: 2s Initial waiting time: 0s Titration direction: Decrease Pretitration: Off Endpoint: 0.1 uA delta endpoint: 2.0 pA Endpoint delay: 5s Polarization voltage: 100 mV Dosing parameter Dosing speed: 25.00 % Filling speed: 30 s Maximum dosing volume: 2.00 ml Unit values Unit size: 10ml Unit ID: 10035619 Reagent: PAO Batch ID: no entry Concentration [mol/l]: 0.00564 Determined at: 02/01/14 3:56:00 Expire date: Opened/compounded: Test according ISO 8655: Last modification: 01/31/14 19:56:01 Application Hints If you have any questions on the application, you can feel free 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,ChinaTel.:4008092068具Fax: +86 (0)10 64390585QE-Mail: info@julabo.cn优莱博技术(北京)有限公司 Web: www.julabo.cn, www.julabo-visco.com Seite von atum: Datum: eite von
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