Factorial Optimization and Validation of Solid–Liquid Extraction with Low-Temperature Partitioning of Pesticide Residues from Pequi Pulp Using High-Performance Liquid Chromatography with a Photodiode Array Detector (HPLC-DAD) - Marcelo O. Ferreira; João Pedro M. Silva; Mara R. R. Pereira; Allyson L. R. Santos; Anizio M. Faria (ACS Omega)