库仑法卡尔费休水分仪测定CNW液体标准水样

No.KCZ-99066上海市中山西路2366弄1号203室京都电子工业株式会社-可睦电子(上海)商贸有限公司电话：021-54488867 电邮： kemu-kem@163.com网址： http：//kem.instrument.com.cn KEM Application Note No.KCZ-130829Coulometric Karl Fischer titration Kyoto Electronics Manufacturing Co.，Ltd. Data No.KC06-130829 Moisture of AQUARANAL Standard Water 1.0 mg/g (CNW) ·Summary- As the result of the feasibility study of the moisture measurement for standard water 1.0 byMKC-520， good repeatability and accuracy (theoretical value， 1.015 mg/g， 0.005mg/g) wereobserved. Therefore， this measurement is judged possible. -Measuring instrument- Main unit：MKC-520 Coulometric KF moisture titrator 衣Electrode： M-713 Twin Platinum Electrode -Reagent- Anolyte： AQUARANAL Coulomat AG (CNW) Catholyte： AQUARANAL Coulomat CG (CNW) -Measuring method- Preparation： (1) Delivered anolyte in titration cell and catholyte in inner burette. (2) Pre-titrate it for dehydration. Measurement： (1) Take approx. 1.0g of the sample with the syringe and measure the moisture of it. -Equation- Moisture(ppm)： ((Data-BGxt-Blank)/(Wt1-Wt2)) Moisture(ppm)： ((Data-BGxt-Blank)/(Wt1-Wt2)) Data： Total water content (ug) t ： Measuring Time (s) Wt1： Tare including sample weight (g) BG：Background value (ug/s) Blank： Blank value(ug) Wt2： Tare including residual weight (g) -Ambient conditions- Temperature： 28℃ Relative Humidity：45% Weather： Fine -Measurement parameter- -Printout data- [TITR. PARA1 Method 1 Titr. Cell No.1 t(Stir) 0s t(Wait) 0s t(Max) 0 s Drift Stop Rel 0.1 pg/s Cont.Gain 5.0 Stable 0.1 pg/min Start Auto Oven Off [CALCU. PARA Calc.No. 2 Unit ：ppmWeight ：Variable Drift Comp ：Auto ***Result** * Sample No. 01-01 Date 2013/07/29 15：05 Titr. Cell No.1 Wt1 0.9892 gWt2 0.0000 g Net 0.9892 g Result 1000.4 ug 1011.3ppm * * *Result*** Sample No. 01-02 Date 2013/07/29 15：08 Titr. Cell No.1 Wt1 0.9944g Wt2 Net 0.0000g0.9944 g Result 1005.1ug1010.8 ppm ***Result*** SampleNo. 01-03 Date 2013/07/29 15：09 Titr. CellNo.1 Wt1 1.0218 g Wt2 0.0000 g Net9 1.0218g Result 1033.8 ug 1011.7ppm -Measurement results- Run Sample size (g) Moisture(ug) Conc.(ppm) Statistics 12 3 0.9892 0.9944 1.0218 1000.41005.1 1033.8 1011.31010.81011.7 MeanSD RSD 1011.3ppm0.4509ppm0.0446% -Comments-