Journal of Analytical Methods in Chemistry / 2017 / Article / Fig 2

Research Article

High-Sensitivity Determination of K, Ca, Na, and Mg in Salt Mines Samples by Atomic Emission Spectrometry with a Miniaturized Liquid Cathode Glow Discharge

Figure 2

Typical LCGD-AES spectrum of the pH = 1.0 HNO3 blank solution (a) and 50 mg L−1 K, Ca, Na, and Mg mixture solution adjusted to pH = 1 with HNO3 (b) (discharge voltage: 650 V, flow rate: 3 mL min−1, interelectrode gap: 2 mm, and capillary diameter: 1 mm).
(a) Blank solution
(b) Mixed solution of K, Ca, Na, and Mg

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