The study of cigarette authenticity in Brazil is important due to increasing consumption contraband cigarettes. Nicotine concentration an parameter reflecting the quality tobacco used production these Simple methods for this determination, which produce reduced waste, are environmentally and industrially important. nicotine smuggled was determined by QuEChERS method, requiring some modification...

The QuEChERS analytical method in combination with GC and LC-MS/MS was validated to quantify the insecticide residues immature kernel, mature cashew apple field soil. performance satisfactory LOQ, recovery RSD values. Residue persistence of betacyfluthrin imidacloprid on carried out after foliar spray formulation, 90 g -1 + 210 OD (Solomon) at recommended (2.5 ml 10 -1) double (5 doses. were be...

A modified QuEChERS method coupled with ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was established for the simultaneous determination of eight biogenic amines (BAs) in Xinjiang smoked horsemeat sausages. The conditions UPLC-MS/MS, extraction solvent and purification were optimized. internal standard used quantitative analysis. Results showed that BAs exhi...

This paper explains the development of a quick and easy gas chromatography (GC) approach to identify methamphetamine in urine. research used with mass spectroscopy capillary column TG-5SILMS (5% phenyl methyl siloxane, 30 m x 0.32 25 m). The carrier flow rate was set at 1.0 mL/minute, temperature inlet detector had been 300°C, oven programmed initiate 50°C held for 1.5 minutes before being rais...