Electrodes static drop

Mercury electrodes (a) hanging mercury drop electrode (b) dropping mercury electrode (c) static mercury drop electrode. 

Recently, the size and shape of a liquid droplet at the molten tip of an arc electrode have been studied,12151 and an iterative method for the shape of static drops has been proposed. 216 Shapes, stabilities and oscillations of pendant droplets in an electric field have also been addressed in some investigations. 217 218 The pendant drop process has found applications in determining surface tensions of molten substances. 152 However, the liquid dripping process is not an effective means for those practical applications that necessitate high liquid flow rates and fine droplets (typically 1-300 pm). For such fine droplets, gravitational forces become negligible in the droplet formation mechanism. 

Voltammetric measurements were performed with an AIS model DLK-100 voltammetric analyzer and a standard three electrode system consisting of a SCE reference electrode with salt bridge, a Pt counter electrode and a working electrode. In some experiments a solid state Au/Hg microelectrode was used as the working electrode and in others an EG G model 303A static dropping mercury electrode was interfaced to the analyzer. Both the Mn(III) to Mn(II) reduction and the Mn(II) to Mn(0) reduction onto the Hg electrode could be monitored simultaneously. 

Figure 4 Modern polarograph, constituted by a potentiostatic system with three electrodes (static mercury, AgCI/Ag reference, and Pt axillary), knocker for synchronism and needle valve allowing to control the size of the hanging drop. With permission of AMEL.

Luther et al. (1991) employed square wave voltammetry for the determination of thiosulphate, sulphite and tetrathionate. They used an EG B Princeton Applied Research Model 383B-4 in conjunction with a Model 303 static dropping mercury electrode. 

A form of voltammetry using a dropping mercury electrode or a static mercury drop electrode. 

FIGURE 4-7 The static mercury drop electrode and its cell stand. 

QTA Quartz tube atomiser SDME Static mercury drop electrode... 

W. M. Peterson, "The Static Mercury Drop Electrode , Amer. Lab. Dec. (1979) 69 (available from EG G PARC as Note T-2). 

Fig. 5.10. PARC Model 384B polarographic analyzer and Model 303A static mercury drop electrode. 

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