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Most of the things we see around are made up of plastics. From stores to homes, it has made its way into each economic sector. The most extensively used is polystyrene which has been widely used in the food industry, cutlery, industrial packaging, building insulation, medicinal equipment, toys, etc. Due to insufficient recycling and its non-biodegradable nature, these products end up in landfills and water bodies. Once introduced in the environment, polystyrene can undergo degradation and disintegration, mechanical abrasion and other processes that result in the formation of smaller sized microplastics that would eventually degrade into nanoplastics. Thus, these products are a significant source of polystyrene nanoplastics (PSNPs). Studies suggest that PSNPs penetrate living organisms through multiple routes via skin, respiratory and digestive tracts and consequently, their accumulation along the food chain …