Analysis of endocrine disruptor compounds in marine sediments by in cell clean up-pressurized liquid extraction-liquid chromatography tandem mass spectrometry determination

Polychlorinated Biphenyl Profile in Polyhydroxy-alkanoates Synthetized from Urban Organic Wastes

“…Consequently, ME can result in either suppression or enhancement of the compound signal intensity. As suggested by other authors, percentages greater than 110% and lower than 75% were considered indicative of signal enhancement and suppression, respectively [25,47]. The severe signal suppression for PCB28, 77 and 110 strongly suggests the use of MMS to perform an accurate quantitation.…”

Pressurized hot water extraction followed by miniaturized membrane assisted solvent extraction for the green analysis of alkylphenols in sediments

“…Classic extraction techniques such as Soxhlet extraction [3,11] and sonication [12][13][14] were commonly employed because of their simplicity and the low cost of the equipment needed. Recently, pressurized liquid extraction (PLE) [1,15,43,46] has been developed to reduce analysis time and solvent consumption. However, PHWE improves these advantages due to the fact that water is non-toxic, non-flammable, cheap and easily available solvent.…”

“…Nevertheless, this procedure increased the analysis time and could produce blank contamination problems. One alternative based on a simultaneous PLE extraction and clean-up (in cell clean-up), which allow the reduction of solvents [46] was carried out. In comparison with these techniques, greener ones (microextraction techniques) could be used when PHWE is employed because of the obtained aqueous extracts.…”

Estudo ambiental de trecho paulista do rio Paraíba do Sul através de caracterização, avaliação toxicológica e análise de metais biodisponíveis em amostras de sedimento: cenário e perspectivas

“…Nos últimos anos, muitos estudos foram desenvolvidos tanto com sedimentos de água doce (presentes em lagos e rios) como com sedimentos marinhos (CHOUERI et al, 2009;PHILLIPS et al, 2009;SALGUEIRO-GONZÁLEZ et al, 2014). Em algumas localizações do Brasil, sedimentos marinhos são utilizados como ferramenta de avaliação de emissários submarinos.…”