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Table 1 Comparison of the proposed method with other methods

From: A facile nano-iron oxide sensor for the electrochemical detection of the anti-diabetic drug linagliptin in the presence of glucose and metformin

Method Linear range (μg/ml) Solvent LOD (μg/ml) Recovery Reference
Spectrophotometric 8–32 H2O 0.247 100.39% (Shehata et al. 2016)
HPLC 0.125–4 Methanol 0.03 11.07% (Shen et al. 2009)
Spectrophotometric 2–12 Methanol   99.86% (Vassilyev et al. 1985)
RP-HPLC 10–50 Methanol and phosphate buffer 1.65 99.79% (Vemula et al. 2015)
CPE/Fe2O3NPs 0.03–86 Universal buffer 0.008 100.1% Proposed method