RESUMO
The present work was under taken to analyze the various water quality parameters, viz. pH, electrical conductivity, total dissolved solids, total alkalinity, total hardness, chloride, calcium, magnesium, sodium, potassium and to assess the water quality in bore well and well water samples of three coastal villages Mukkam, Chepalakancheru and Dallipeta of Vizianagaram district of Andhra Pradesh. From each of the village, different sampling stations were identified and by composite sampling methods water samples were collected and analyzed for the various parameters. The results were compared with the values stipulated by World Health Organization (WHO), and ARE: 10500 for drinking water quality. In the present investigation the authors found that the overall quality of the three villages is poor and not recommended as potable.
RESUMO
A direct spectrophotometric method was developed by the authors for the quantitative determination of tinidazole in a pure form and also in other pharmaceutical formulations. The method was based on the diazotization reaction between nitro group of the drug sample, sulphanilamide and NEDA. In the present method, the reddish-purple colour dye formed, exhibited a maximum absorbance at 540nm. Beer’s law was found to be obeyed in the range of 100-600μgmL-1for tinidazole with detection limits of 0.04μgmL-1. The present method was found to be precise, accurate for the qualitative and quantitative determinations.