Assessment of cadmium and lead in commercial coconut water and industrialized coconut milk employing HR-CS GF AAS

Abstract In this work, an analytical method for the determination of Cd and Pb in natural coconut water samples, industrialized coconut water samples and coconut milk using high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GF AAS), after minimum treatment of the sample was developed. The analytical method was applied to 46 samples collected in Salvador, Bahia (Brazil). The ranges of concentrations obtained were: 0.42–18.72 μg L −1 Cd and −1  Pb for natural coconut water samples (n = 14); −1  Cd and 6.57–29.02 μg L −1  Pb for industrialized water coconut samples (n = 16); and −1  Cd and −1  Pb for coconut milk samples (n = 16). For all samples, Cd and Pb concentrations were below the maximum tolerated values recommended by Brazilian Health Surveillance Agency (Agencia Nacional de Vigilância Sanitaria, ANVISA).