A confirmatory method for 6 penicillin antibiotics (amoxicillin, ampicillin, penicillin G, oxacillin, cloxacillin, and dicloxacillin) in honey is presented that allows determination and confirmation of identity of the antibiotics at trace levels.

Liquid chromatography?electrospray ionization mass spectrometry methods (LC-ESI-MS and LC-ESI-MS/MS) for the determination of five macrolide antibiotics including spiramycin, tilmicosin, oleandomycin, erythromycin, and tylosin in honey are presented.

Fifty samples of honey collected from local markets of Portugal and Spain during year 2002 were analyzed for 42 organochlorine, carbamate, and organophosphorus pesticide residues.

Streptomycin belongs to the group of aminoglycoside antibiotics. It was utilized in apiculture to protect bees against a variety of bee diseases. It was the aim of this study to develop a highly sensitive LC/MS/MS method, which could be validated, for the quantitative determination of streptomycin in honey.

This paper describes the principles, the current technology and the applications of HPLC and tandem mass spectrometry (LC

We present an electrospray high-performance liquid chromatographic tandem mass spectrometric (HPLC

The development and application of two methods for determining bromate in bread are described. A gas chromatographic (GC) method which relied on the formation of a volatile derivative of bromate gave a detection limit of 12 μg/kg. Duplicate analyses agreed well but recovery from breads spiked with bromate were low and averaged 30% for brown bread and 42% for white bread. Further studies indicated that this was caused by the derivatization reaction being suppressed by components of the sample and reagents used in their preparation.

A sensitive method was developed for the determination of bromate in bread by capillary gas chromatography with a mass detector (GC/MS). Bromate was extracted with water from bread samples. After centrifugation, the supernatant was filtered and Cl− was removed by an OnGuard‐Ag cartridge column.