Aalekhya Reddam, Nicholas Herkert, Heather M. Stapleton, David C. Volz. Silicone wristbands reveal ubiquitous human exposure to ortho-phthalates and non-ortho-phthalate plasticizers in Southern California. Environmental Research, 2024; 258: 119465 DOI: 10.1016/j.envres.2024.119465

Science Daily – A new study documents how Southern Californians are chronically being exposed to toxic airborne chemicals called plasticizers, including one that’s been banned from children’s items and beauty products. Plasticizers are chemical compounds that make materials more flexible. They are used in a wide variety of products ranging from lunchboxes and shower curtains to garden hoses and upholstery. “It’s not just for drinking straws and grocery bags,” said David Volz, environmental sciences professor at UC Riverside, and corresponding author of a paper about the study published in the journal Environmental Research. Previous California monitoring programs focused on plasticizers called ortho-phthalates, some of which were phased out of manufacturing processes due to health and environmental concerns. Less research has focused on the health effects of their replacements, called non-ortho-phthalates. This study revealed the presence of both types of plasticizers in the air throughout Southern California. “The levels of these compounds are through the roof,” Volz said. “We weren’t expecting that. As a result, we felt it was important for people to learn about this study.”