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• Nine elements were determined in twelve red jambo samples using ICP OES. • Accuracy of the method was checked by analysis of certified reference material. • Chemometric techniques of multivariate analysis was applied in the evaluation of the mineral composition of red jambo. • Among the analytes evaluated, Ca and K showed the highest concentrations. • The results demonstrated that red jambo can be added in the human diet. This work aimed to evaluate the mineral composition of twelve samples of red jambo (Syzygium malaccensis) collected in 10 cities in the state of Bahia. The samples were digested in a digester block with a reflux system and cold finger, and the analytes were determined by optical emission spectrometry with inductively coupled plasma. The accuracy of the method was confirmed by analyzing NIST 1570a certified reference material (spinach leaves) at a 95% confidence level. The results were evaluated through Principal Component Analysis and Hierarchical Cluster Analysis, which allowed the identification of outliers in the results of the city of Jaguaquara. The analyte concentrations in the samples (mg 100 g –1) comprised a range of: Ca (3.0–28.9), Fe (0.035–0.125), K (134.8–197.5), Mg (2.7–19.8), Mn (0.012–0.131), Na (0.5–10.8), P (0.24–13.5), Sr (0.010–0.314), and Zn (0.026–0.129). This demonstrates that the fruit can be indicated as a potential nutritional supplement in human nutrition. [ABSTRACT FROM AUTHOR]

• As, Se and Hg were determined using AFS after extraction induced by emulsion breaking. • Multivariate optimization was employed to optimize the extraction induced by EIEB. • The proposed method was applied in the analysis of crude palm oil. In this work is presented the development of a method for As and Se determination in crude palm oil samples by hydride generation atomic fluorescence spectrometry and Hg by cold vapor atomic fluorescence spectrometry after ultrasound-assisted emulsification and extraction induced by emulsion breaking (EIEB). The optimization of the method was carried out by multivariate designs. The developed method has presented limits of quantification (LOQ) of 0.72, 0.12, and 1.5 μg L−1 for As, Hg, and Se, respectively. The precisions of the proposed method expressed as repeatability were 0.92, 2.2, and 3.7% RSD for 2 µg L−1 (n = 10) of As, Hg and Se, respectively. The developed methodology was applied in palm oil samples collected in the Bahia State. Concentrations (μg L−1) found in the samples were between