The ability of silver nanoparticles to kill bacteria, and th | 89725
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International Research Journal of Biotechnology

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The ability of silver nanoparticles to kill bacteria, and the effects of industrial chemicals on biological indicators in water, sediment, and soil


Paul Cambier*

Using a conventional laboratory toxicity test, the lethal toxic effects of industrial detergent (Neatex) and corrosion inhibitor (Norust CR 486) that are often discharged into the Nigerian environment were investigated.

Using the Organization for Economic Cooperation and Development (OECD) # 203, 218 and 207 procedures, bio indicators (fish, shrimp, and earthworms) were subjected to various concentrations of the test substances. Both compounds were modestly harmful to organisms according to the water, sediment, and soil ratings, but the corrosion inhibitor was more toxic than the industrial detergent based on the predicted 4, 10, and 14-day lethal concentrations (LC50). Between organisms exposed to the test compounds in the three mediums and the control groups, there was differentiable toxicity at (p 0.05).

Because most chemicals released into the environment bind to soil and sediment particles and can harm organisms in the soils, sediment, and overlying waters, the observed sensitivity of the test organisms to both chemicals in the different media provides a basis for routine checks on chemicals discharged into the Niger Delta waters.

Nanotechnology is anticipated to provide new opportunities for atomic-scale disease treatment and prevention customization of materials. Metallic nanoparticles, which display higher chemical activity as a result of their huge surface to volume ratios and crystallographic surface structure, are among the most promising nanomaterial with antibacterial capabilities. In this study, we carried out batch tests to evaluate the effectiveness of silver nanoparticles made by the citrate reduction process as antibacterial agents. Comparing the zone of inhibition, time-dependent antibacterial activity, and Escherichia coli growth rate of silver nanoparticles with AgNO3's antimicrobial activity. When E. coli was exposed to silver nanoparticles at concentrations of 30 g m-1, 100% of the growth was reduced, but the effect of AgNO3 was significantly less pronounced at this concentration.

By employing various concentrations of AgNO3 and silver nanoparticles, the zone of inhibition test was also carried out to determine the degree of inhibition. It was discovered that a concentration of 10 g ml-1 could stop bacterial growth and produce an AgNO3 and Ag nanoparticle zone of 0.8 cm and 1.7 cm, respectively. AgNO3 is not as effective a candidate for antibacterial action as Ag nanoparticles.

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