A simple, rapid and efficient method has been developed for the extraction, preconcentration and determination of cobalt (II) and nickel (II) ions in water samples by air-assisted liquid-liquid microextraction (AALLME) coupled with graphite furnace atomic absorption spectrometry (GFAAS). In the proposed method, much less volume of an organic solvent was used as the extraction solvent in the abs...

So far, no research has been focused on the determination of organomercuries in sewage sludge. Here, an ultrasonic extraction method for the rapid determination of methylmercury (MeHg) and ethylmercury (EtHg) in sewage sludge after ultrasound-assisted extraction is proposed. Using TMA (tetramethylammonium hydroxide) as the extractant with 3.0 g copper powder, ultrasonic extraction for 30 min at...

Triterpenoids are considered to be the major pharmaceutical active compounds found in macrofungus Ganoderma lucidum (G. lucidum). Extraction conditions of triterpenoids from Vietnamese red G. were optimized by response surface methodology using ultrasound –assisted extraction (UAE) method. A Box – Behnken experimental design was used determine simultaneous influences three independent variables...

The selective detection and quantification of macromolecular targets is a fundamental biological mechanism in nature. Molecularly imprinted polymers (MIPs) have been identified as one of the most promising synthetic alternatives to bioreceptors. However, expanding this methodology towards selective recognition of bulky templates such as proteins appears to be extremely challenging due to proble...

Secondary plant metabolites, in particular phenolic compounds, are characterized by great diversity the kingdom and widely used medical industrial fields. The extraction of these compounds represents a critical step, differences conditions strongly affect yields total concentrations polyphenols extracts. In this way, objective present study was to optimize parameters from Lavandula stoechas usi...

Phenolic compounds present in mango peel byproducts have been reported to several beneficial health properties. In this study, we carried out an optimization of phenolic using ultrasound-assisted extraction via ultrasonic bath and sonotrode. To optimize the variables extraction, a Box–Behnken design was used evaluate best conditions obtain high total compound antioxidant activity evaluated by d...

The results of the characterisation anaerobic sludge-derived extracellular polymeric substances (EPS) under different extraction conditions and their effects on fouling in submerged hollow fibre membranes are presented. A wide range EPS was obtained depending conditions. Proteins, polysaccharides, humic represented 80–99% total organic matter extracted, with 54–60% identified as substances. Ult...

In recent years, the scientific community has turned its attention to further study and application of green chemistry as well sustainable development in reducing consumption raw materials, solvents, energy. The aims ensure protection environment also, consequently, improve quality human life. It offers several benefits, both socially economically. last few decades, new alternative non-conventi...

Oilseeds are crucial for the nutritional security of the global population. The conventional technology used for oil extraction from oilseeds is by solvent extraction. In solvent extraction, n-hexane is used as a solvent for its attributes such as simple recovery, non-polar nature, low latent heat of vaporization (330 kJ/kg) and high selectivity to solvents. However, usage of hexane as a solven...