Potentiometric analysis of brass and bronze plating baths - Metrohm

Application Bulletin 91/2 ePotentiometric analysis of brass and bronze plating bathsPage 5/7'fr751 GPD Titrino 05268 751.0011date 2001-01-10 time 16:10 16U(init) 99 mV DET U ********Sampl size 1 mlEP1 10.117 ml 153 mVCu64.289 g/lstop V reached============U [mV]210200190180170160150140130120110100********EP10.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0V [ml]Fig. 2: Titration curve for the iodometric determination of copper'fr751 GPD Titrino 05268 751.0011date 2001-01-19 time 10:39 6U(init) -123 mV MET U ********sampl size 1 mlEP1 4.155 ml -205 mVSn24.658 g/lstop V reached============U [mV]-150-175-200-225-250EP1********-2750 1 2 3 4 5 6 7 8 9 10V [ml]Fig. 3: Titration curve for the iodometric determination of tin'pa751 GP Titrino 05268 751.0011date 15-01-03 time 10:59 6MET U ********Parameters>titration parametersV step0.05 mltitr.ratemax. ml/minsignal drift25 mV/minequilibr.time34 sstart V:OFFpause0 sdos.element: internal D0meas.input: 1temperature 25.0 °C>stop conditionsstop V:abs.stop V10 mlstop UOFF mVstop EP 1filling ratemax. ml/min>statisticsstatus:OFF>evaluationEPC5.2 mVEP recognition:allfix EP1 at UOFF mVpK/HNP:OFF>preselectionsreq.ident:OFFreq.smpl size:OFFactivate pulse:OFF============Fig. 4: Parameter settings for the chelatometric determination of copper/zinc

Application Bulletin 91/2 ePotentiometric analysis of brass and bronze plating bathsPage 7/7'fr751 GPD Titrino 05268 751.0011date 2001-01-12 time 16:15 2U(init) -315 mV DET U 751.0011sampl size 5 mlEP1 4.545 ml -109 mVEP2 9.997 ml 213 mVNa2CO3 115.582 g/lstop V reached============Fig. 8: Titration curve for the determination of carbonate'fr751 GPD Titrino 05268 751.0011date 2001-01-15 time 10:13 3U(init) 78 mV DET U 751.0011sampl size 10 mlEP1 8.987 ml -11 mVNa2SO3 5.664 g/lstop V reached============U [mV]1007550250-25(1)DET, multipleEP1-50-75-100Fig. 9: Titration curve for the iodometric determination of sulfite0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0V [ml]