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Table 4 Analytical characteristics of the DLLME-FAAS method for copper determination

From: Determination of copper(II) by flame atomic absorption spectrometry after its perconcentration by a highly selective and environmentally friendly dispersive liquid–liquid microextraction technique

Parameter Analytical feature
Sample consumption (mL) 10.0
Linear range (μg L− 1) 3.0–120
Regression eq. (C in μg mL−1, n = 9) ΔA = 2.9003C + 1.8 × 10− 2
Limit of detection, μg L−1 (3σ) 0.60
Preconcentration factor 50
Enrichment factor 49
Precision (20.0 μg mL−1, n = 6) RSD (%) 1.5
Consumptive index (mL) 0.20
Recovery (%) 96–105