The search query (Microplastic? or micro-plastic?) limited to publications from 2010 to 2022 resulted in a total of 10,000 documents from the CAS Content Collection. Though the retrieval of documents was larger than that of previous bibliometric studies , the decision was made to broaden the search formula to include microfibers and nanoplastics, to focus on sustainability, environment and health, and to exclude results containing specific words that caused false positives.