Fig. 1. Schematic diagram of SCGD-AES experiment setup

Fig. 2. Emission spectra of the SCGD
(a): Blank solution; (b): Solution containing 50 mg·L^-1 Sr

Fig. 3. Effect of solution flow rate on SBR of Sr
solution concentration: 100 mg·L^-1 Sr

Fig. 4. Effect of discharge current on SBR of Sr
solution concentration: 100 mg·L^-1 Sr

Fig. 5. Effect of pH on SBR of Sr
solution concentration: 100 mg·L^-1 Sr

Fig. 6. Stability of emission signals of 15 mg·L^-1 Sr