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...

Increasing emissions of chemical compounds to the environment, especially of pesticides, is one of factors that may explain present honeybee colony losses. In this work, an analytical method employing liquid chromatography-tandem mass spectrometry (LC-MS/MS) was optimized for the simultaneous screening of 19 pesticides which have not been yet determined in honeybee samples from northern Poland ...

In the present study, orthosulfamuron residues were extracted from fatty (unpolished) rice and rice straw using a modified QuEChERS method and analyzed using liquid chromatography-tandem mass spectrometry. The matrix-matched calibration was linear over the concentration ranges of 0.01-2.0 mg/kg with determination coefficient (R (2)) ⩾ 0.997. The recovery rates at two fortification levels (0.1 a...

For the first time, a multi-residue methodfor simultaneous determination of 41LC-amenable pesticides in rice, belonging to different chemical classes has been developed in Iran by LC-MS/MS. The pesticides were analyzed simultaneously in a single run using positive electrospray ionization with multiple reaction monitoring (MRM) after extraction with slightly modified QuEChERS method. The calibra...

An analytical method for the simultaneous determination of residues of eight neonicotinoid insecticides and two metabolites in honey using LC-MS/MS was developed and validated. Two approaches of sample preparation were investigated, with the final method involving acetonitrile extraction and subsequent cleanup by dispersive solid-phase extraction (QuEChERS type). Validation was based on quintup...

This application note describes a fast analytical method for determination of halosulfuron-methyl using QuEChERS and capillary electrophoresis tandem mass spectrometry (CE/MS/MS). The method was developed and validated for halosulfuron-methyl in green and yellow bell peppers. It showed good linearity (R2 > 0.999) from 5.0 to 500 ppb for the analytical curves prepared in background electrolyte a...

Abstract Background The quick, easy, cheap, effective, rugged, and safe (QuEChERS) method can be employed for multi-residue analyses instead of traditional extraction methods due to its advantages in terms time required equipment. A modified version the QuEChERS has been developed quantifying eight pharmaceuticals belonging different classes three real soils with chemical properties. Firstly, h...