OBJECTIVE To assess the prevalence of colourings and preservatives in drug formulations in the United Kingdom. DESIGN Postal survey. PARTICIPANTS All pharmaceutical manufacturers in the United Kingdom were requested to supply data on drug formulations with particular regard to the content of colourings and preservatives. MAIN OUTCOME MEASURE Prevalence in proprietary drugs of colourings o...

The cultivation of vegetables in greenhouses is characterised by high planting density and environmental conditions that favour the development pests diseases. These are mainly controlled using plant protection products applied with a hand-held sprayer. This inefficient low-tech equipment difficult to calibrate. study evaluates one spray gun two lances widely used greenhouse vegetable crops. te...

The uptake of tartrazine from its aqueous solution by powdered activated carbon prepared cola nut shells chemically with potassium hydroxide (ACK) and phosphoric acid (ACP) has been investigated using kinetics models. Batch isotherm data were analysed the pseudo-first order, pseudo-second order model as well intraparticle diffusion model. For structural elucidation, materials characterized FTIR...

In this work, pillared bentonite with Al−Fe (Al−Fe−PILC) was synthesized and used as a heterogeneous Fenton-like catalyst in the oxidation of tartrazine azo-dye an aqueous solution. The modification Al-Fe mixed system concentrated medium, ultrasound assisted intercalation carried out, obtained characterized by XRF, XRD, N2 adsorption at 77 K. Al−Fe−PILC, using different amounts H2O2, expressed ...