A fast, low-cost and eco-friendly method for routine determination of Bisphenol-A in landfill leachate employing vortex assisted liquid-liquid extraction

Landfills are sites designed to receive and final disposal of a broad variety of urban solid wastes (USW). The decomposition and biodegradation processes generate a leachate of high complexity and toxicity, containing persistent and recalcitrant contaminants that are not usually monitored. Bisphenol-A (BPA) is a synthetic compound applied mostly on the production of polycarbonate plastics, epoxy resins, and is an endocrine disruptor. BPA negatively affects biological receptors, resulting in harmful effects to nervous and reproductive system as well metabolic and immune function. The presence of BPA in USW urges the development of feasible analytical methods to support the effluent treatment plants and reduce the risks of contamination. The main goal of this work was to develop an efficient, eco-friendly, fast and simple method for routine analysis of BPA in the leachate from landfill. A vortex assisted liquid-liquid extraction (VALLME) using ۱-octanol as solvent was performed. BPA recoveries at spiking levels of ۲.۵, ۶.۵ and ۱۲.۵ μg L-۱ were between ۶۰ to ۱۰۴% with relative standard deviation (RSD) lower than ۲۶%. The linearity of the method was evaluated and the correlation coefficient was (r) ۰.۹۹۸۵. The limit of quantification (LOQ) was ۲.۵ μg L-۱ with a pre-concentration factor of ۲۰. The method has advantages such as low consumption of extraction solvent (۱۵۰ μL), low cost, easy and fast determination.