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Table 1 Type and concentration of desorption solution on the Cd(II) ions’ extraction efficiency

From: Insights into brewed tea waste as a green and low-priced adsorbent for solid-phase extraction of Cd(II) ions: isotherm, kinetic, and artificial neural network approach

Eluent (HCI) (M)

Recovery (%)

Eluent (HNO3)

Recovery (%)

0.01

85.0 ± 2.7

0.01

82.6 ± 2.2

0.05

93.5 ± 3.9

0.05

89.4 ± 3.4

0.1

102.6 ± 0.8

0.1

98.9 ± 4.0

0.5

96.9 ± 2.9

0.5

99.9 ± 3.3

1.0

101.4 ± 4.1

1.0

101.8 ± 3.6

2.0

92.5 ± 2.7

2.0

91.5 ± 0.4

3.0

85.5 ± 2.3

3.0

87.3 ± 2.1