Primary Microplastic: Source, Uses, Transportation from Land to Marine Environment

Primary microplastic is mostly produced intentionally for specific usage. After the usage of the products made of primary microplastic (e.g., microbeads), the microplastic particles enter into the environment and are reported in all zones (soil, air, and water). Like other types of microplastic, primary microplastic also enters into the food chain and poses serious threat to both terrestrial and marine flora and fauna. Primary microplastic is having various sources and are used in pharmaceutical, cosmetic, and other industries. In the present chapter, an attempt was made to overview the primary microplastics under the following lines: (1) to enlist various sources of primary microplastic, (2) to discuss its potential applications in various industries, and (3) to highlight various routes and mechanisms to transport microplastics from land to the marine environment.