Papers by yub narayan thapa
Tribhuvan Journal
Phosphate is primarily used as a builder in detergents, which helps soften hard water, thereby in... more Phosphate is primarily used as a builder in detergents, which helps soften hard water, thereby increasing the cleansing power of detergents. Extensive discharge of phosphate from detergents leads to eutrophication of surface water bodies. This work aims to assess the amount of phosphate present in detergent samples available in Tansen, Palpa, and compare its concentration between local and foreign detergents. Phosphate in detergent samples can be determined by the molybdenum blue phosphorus method using a spectrophotometer. The experimental process relies on forming a phosphomolybdate blue complex with ammonium molybdate and the subsequent reduction of the complex by hydrazine hydrate in an aqueous sulphuric acid medium. The system obeys Beer-Lambert’s law at 830 nm in the concentration range of 2-16 ppm. In this study, the phosphate concentration in local detergents (Dhoni, Light, V-Series, Nirma, Upahar, Patanjali, Rin Shakti and Dr Jhatka) varied from 15.54-33.03 ppm, and that of...
International Journal of Applied Sciences and Biotechnology, 2022
Water is an important component of the ecosystem that sustains life on the planet since water pro... more Water is an important component of the ecosystem that sustains life on the planet since water provides vital components for human health. To gain a precise picture of water quality, studies of the components found in the water are critical. Three physical and six chemical criteria were examined to assess the quality assurance of drinking water of Majkhola. All tests were carried out according to the protocols outlined in the standard methodology. For this investigation, four water samples were collected in the morning from different areas of Majhkhola throughout three months, from December 2018 to February 2019. The purpose of this study was to evaluate the water quality parameters. pH (6.85 – 8.5), Conductivity (72.3 – 79.9 µm/s), Alkalinity (37.84 – 39.27 mg/L), Chloride (2.509 – 3.76 mg/L), Dissolves Oxygen (DO) (0.8 – 1.3 mg/L), Hardness (60 – 72 mg/L) and Total Dissolved Solids (100 – 150 mg/L) of water samples values lay within the permissible guideline values as prescribed by...
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Papers by yub narayan thapa