Table 3.

Effect of HF volume on Cd recoveries (%) and removal of Mo and Sn in MVM solution in a two-step coprecipitation using HF and TEA. Values are mean ± standard deviation of five separate preparations (n = 5)

HF volume (μL)	Step	Analyzed medium	Cd recovery (%)			Residual Mo (μg mL−1)	Residual Sn (μg mL−1)
			110Cd	111Cd	114Cd
20	1	Supernatant	94 ± 5	96 ± 5	92 ± 6	0.87 ± 0.04	0.18 ± 0.02
	2	Pellet	98 ± 6	101 ± 3	96 ± 6	0.14 ± 0.02	0.062 ± 0.02
40	1	Supernatant	98 ± 3	101 ± 4	98 ± 4	0.90 ± 0.08	0.20 ± 0.04
	2	Pellet	99 ± 2	97 ± 5	99 ± 3	0.12 ± 0.06	0.056 ± 0.05
60	1	Supernatant	100 ± 2	100 ± 5	94 ± 6	0.092 ± 0.04	0.26 ± 0.06
	2	Pellet	75 ± 6	78 ± 4	72 ± 5	0.020 ± 0.02	0.024 ± 0.02
80	1	Supernatant	97 ± 4	94 ± 4	95 ± 3	0.94 ± 0.07	0.35 ± 0.08
	2	Pellet	6.8 ± 0.6	7.3 ± 0.2	5.8 ± 0.5	0.014 ± 0.01	0.016 ± 0.04