Dr Ricardo Marcos is an Emeritus professor at the Universitat Autònoma de Barcelona, Spain. He is an expert researcher in toxicology and has over 358 peer reviewed publications in related fields. His publications have attained over 10, 560 citations and has an H index 66. He has supervised over 45 doctoral candidates and 62 Master thesis. He has high impact publications related to toxicology of micro nanoplastics