Rapid Determination of Parabens in Water Samples by Ultra-high Performance Liquid Chromatography Coupled to Time of Flight Mass Spectrometry 

Rotating-disk sorptive extraction for the determination of sex hormones and triclosan in urine by gas chromatography-mass spectrometry: Clean-up integrated steps and improved derivatization 

A high throughput approach to rotating-disk sorptive extraction (RDSE) using laminar cork for the simultaneous determination of multiclass organic micro-pollutants in aqueous sample by GC-MS 

Second-derivative spectrophotometric assay of bromazepam in pharmaceutical formulations 

Flow injection continuous liquid-liquid extraction using a hollow fiber membrane separator for determination of copper in water 

INTEGRATED FIA HPLC METHOD FOR PRECONCENTRATION AND DETERMINATION OF TRANSITION-METAL IONS 

Flow injection with an integrated retention/photometric detection unit for the determination of iron in water 

Simultaneous determination of parathion and p-nitrophenol in vegetable tissues by derivative spectrophotometry 

Preliminary physical chemical characterization of river waters and sediments affected by copper mining activity in central chile. Application of multivariate analysis 

Sistma de flujo continuo no segmentado con detección polarográfica para la determinación de ranitidina en formas farmacéuticas y orina