These operating conditions effectively tie ICP-OES/MS to the laboratory. ICP-OES/MS requires high power (>1 kW) and gas (>15 L min-1 Ar) consumption, along with the need for vacuum equipment in the case of ICP-MS. ELCAD has important advantages over conventional, nebulization-based analytical techniques, e.g., inductively coupled plasma (ICP)-OES/MS, which are extensively used as reference techniques for inorganic analysis. In ELCAD/SCGD, the electrolytic solution serves as the sample, just as the solid cathode does in conventional, low-pressure glow discharges. in 1993, is a conically shaped GD microplasma with 3-4 mm base diameter and 3 mm height, operating between an electrolytic solution cathode and a metal (tungsten) rod anode under ~1 kV plasma voltage and 70 mA discharge current (see Figure 1). In essence, ELCAD, introduced by Cserfalvi et al. In particular, the electrolyte-cathode atmospheric glow discharge (ELCAD) or Solution Cathode Glow Discharge (SCGD) is an alternative source for a fast elemental analysis of liquids. Glow Discharges operating at atmospheric pressure have shown a strong analytical potential for the fast analysis of liquids. Solution Cathode Glow Discharge Optical Emission Spectroscopy
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