Catalase-Based Modified Graphite Electrode for Hydrogen Peroxide Detection in Different Beverages

Table 7

Determination of H₂O₂ in several commercial beverages, spiked with H₂O₂ 15 μmol L⁻¹, using NAF-MWCNTs-COOH-MG-SPE-CAT as biosensor.

Beverages samples	Found/μmol L^−1	Recovery %
Peach tea	15.9	105.7
Lemon tea	15.3	102.3
Green tea	14.8	101.0
Apple juice	14.9	100.3
Blood orange juice	15.7	104.8
Pineapple juice	14.7	102.0
Lactose-free milk	15.6	103.8