Journal of Analytical Methods in Chemistry

Research Article

Simultaneous Determination of Copper, Lead, and Cadmium at Hexagonal Mesoporous Silica Immobilized Quercetin Modified Carbon Paste Electrode

Table 1

The liner range, linear regression equation, and detection limit of copper, lead, and cadmium at HMS-Qu/CPE.
Analyte　Linear range ( 𝜇 M)Regression equationCorrelation coefficient ( 𝑛 = 6 )Detection limit (nM)
Cu(II)0.02–6.0 𝐼 p ( 𝜇 𝐴 ) = 2 9 . 8 1 + 0 . 6 8 𝑐 ( 𝜇 M ) 0.99565.0
Pb(II)0.01–8.0 𝐼 p ( 𝜇 𝐴 ) = 9 6 . 6 1 + 1 . 3 7 𝑐 ( 𝜇 M ) 0.99740.8
Cd(II)0.004–2.0 𝐼 p ( 𝜇 𝐴 ) = 5 8 . 0 6 + 0 . 8 5 𝑐 ( 𝜇 M ) 0.99281.0