Haroldo Silveira Dórea

TL;DR: In this paper, a study was carried out to evaluate preliminarily the BTEX, polycyclic aromatic hydrocarbons (PAHs), and metals contents in produced water samples taken from effluents of the Bonsucesso treatment plant located in the city of Carmopolis, North-east of Brazil.

TL;DR: The structure of the benthic macrofaunal assemblages of the estuarine portion of Paraguacu River, NE, Brazil, and its relationship with surface sediment characteristics (trace metals, PAHs, nutrients and grain size) and physical variables were investigated at ten stations on two contrasting occasions, summer (dry season) and winter (rainy season) as discussed by the authors.

TL;DR: The optimized SPME method was applied in analysis of hair samples from Cannabis drug users, showing that CBN and CBD were present in all samples analyzed.

TL;DR: A simple and effective extraction method based on matrix solid-phase dispersion (MSPD) was developed to determine dimethoate, malathion, lufenuron, carbofuran, 3-hydroxycarb ofuran, thiabendazole, difenoconazole and trichlorfon in coconut pulp using gas chromatography-mass spectrometry with selected ion monitoring (GC/MS, SIM).

TL;DR: A method based on solid-phase microextraction (SPME) and gas chromatography with flame ionization detection (GC-FID) has been optimized for the determination of benzene, toluene, ethylbenzene and xylenes (BTEX) in water released from a waste treatment plant.