nowadays, palladium compounds due to their especial characteristics used in different industries, mainly in electrical power sources and chemical productions as a catalyst. therefore, pd concentration is increasing in our around that can be contaminant our environment due its toxic effects. in this work, a simple, selective and rapid flow injection method of analysis (fia) has been developed fo...

In general, for the histochemical demonstration of peroxidase , b enzidine, naphthol, and leuco-dyes are utilized in the prosence of hydrogen peroxide. Among these , the technical modifications of the benzidine-peroxide method are the most numerous . Alpha-naphthol has been used less often than benzidine . Application of the leucodye method for animal tissues is remarkably limited and this meth...

The title compound, C(16)H(12)Cl(2)O, was synthesized from 1-naphthol and 1,2-dichloro-benzene with anhydrous aluminium chloride as a cataylst. In the mol-ecule, the two ring systems are approximately perpendicular to one other with a dihedral angle of 82.06 (4)°. There are two CH-type hydrogen bonds.

A thermostable phenol sulfotransferase, SULT1A1, has been implicated in numerous detoxification and bioactivation pathways; however, little is known regarding its endogenous function or its putative role in mediating risk for human environmental disease. A simple endpoint colorimetric assay is described that can be used for rapid phenotyping of SULT1A1 activity in human populations. The assay u...

Naphthol isomers were simultaneously and spectrophotometrically determined in wastewater, using a model based on net analyte signal (NAS). The calibration method used is a variation of the original hybrid linear analysis method as proposed by Goicoechea and Olivieri (HLA/GO). Owing to spectral interferences, the simultaneous determination of mixtures of naphthol isomers, using a spectrophotomet...

Our study objectives were (1) to investigate the selectivity of polycyclic aromatic hydrocarbon (PAH) metabolites for tobacco smoke exposure and (2) to determine half-lives of PAH metabolites in smokers. There were 622 participants from the United States (US) and Poland, and of these, 70% were smokers. All subjects provided spot urine samples, and 125 smokers provided blood samples. Urinary PAH...