Ultrasound assisted-cloud point extraction combined with flame atomic absorption spectrometry for selective preconcentration and determination of As(v) in selected water and beverage samples

Abstract

A new UA-CPE method was efficiently combined with FAAS for detection of As(v). The method is based on the ion-association of As(v) with NRH⁺ in the presence of pyrogallol. A detection limit of 0.45 μg L^-1 for As(v) was achieved.