{"id":5387,"date":"2025-07-17T05:51:23","date_gmt":"2025-07-17T05:51:23","guid":{"rendered":"https:\/\/scientificworld.org\/?p=5387"},"modified":"2025-07-17T05:52:04","modified_gmt":"2025-07-17T05:52:04","slug":"study-reveals-airborne-pollutants-from-tijuana-river-pose-health-risks-in-san-diego","status":"publish","type":"post","link":"https:\/\/scientificworld.org\/?p=5387","title":{"rendered":"Study Reveals Airborne Pollutants from Tijuana River Pose Health Risks in San Diego"},"content":{"rendered":"\n<p>A new study from the University of California, San Diego, has uncovered how pollutants from the Tijuana River, including drugs, tire chemicals, and personal care products, become airborne and affect air quality in San Diego. Published in&nbsp;<a href=\"http:\/\/dx.doi.org\/10.1126\/sciadv.ads9476\"><em>Science Advances<\/em><\/a>, the research highlights the widespread presence of these contaminants in coastal aerosols, raising concerns about long-term exposure for nearby residents.<\/p>\n\n\n\n<p>The study, led by Adam Cooper, a recent chemistry Ph.D. graduate, involved collecting air and water samples along San Diego County\u2019s coastline, including Imperial Beach and La Jolla. Researchers identified benzoylecgonine (BZG), a cocaine metabolite, as a key marker for tracing sewage-derived pollutants. They found that after rainfall, BZG levels spiked in both ocean water and aerosols, correlating with increased river flows and sea spray emissions.<\/p>\n\n\n\n<p>The team also detected other harmful substances, such as methamphetamine, octinoxate (a sunscreen ingredient), and dibenzylamine (used in tire manufacturing). Notably, octinoxate levels in the air near Imperial Beach were comparable to those found above wastewater treatment plants. &#8220;Octinoxate can degrade DNA when exposed to light,&#8221; explained Jonathan Slade, a co-author of the study. &#8220;Inhaling these aerosols means these chemicals can reach deep into our lungs and bloodstream.&#8221;<\/p>\n\n\n\n<p>Pollutant concentrations were highest near the Tijuana River and Imperial Beach, diminishing farther north. While individual exposure levels are small, long-term inhalation poses potential health risks. Residents near the border have reported respiratory issues, insomnia, and headaches, and beach closures due to bacterial contamination are frequent.<\/p>\n\n\n\n<p>&#8220;The sewage crisis isn\u2019t just a water issue\u2014it\u2019s in the air too,&#8221; said Slade. &#8220;We need more research to understand the health effects, but our findings underscore the urgency for better infrastructure and policy action.&#8221;<\/p>\n\n\n\n<p>Cooper, now a Science and Policy Fellow, emphasized the political hurdles: &#8220;The solutions exist, but they require cross-border collaboration and investment.&#8221;<\/p>\n\n\n\n<p>The study calls for improved wastewater treatment, public awareness, and further research into the health impacts of airborne pollutants. With 80% of global wastewater untreated, the findings have broader implications for coastal communities worldwide. Kimberly Prather, a senior researcher, warned, &#8220;Aerosolized pollutants can travel far beyond their source, exposing billions to contaminated air.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new study from the University of California, San Diego, has uncovered how pollutants from the Tijuana River, including drugs, tire chemicals, and personal care products, become airborne and affect air quality in San Diego. Published in&nbsp;Science Advances, the research highlights the widespread presence of these contaminants in coastal aerosols, raising concerns about long-term exposure [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1117],"tags":[2171,2936,1139,72,2939,2941,2940,2937],"class_list":["post-5387","post","type-post","status-publish","format-standard","hentry","category-environmental-science","tag-air-quality","tag-airborne","tag-chemistry","tag-drugs","tag-health-risks","tag-methamphetamine","tag-personal-care-products","tag-pollutants"],"_links":{"self":[{"href":"https:\/\/scientificworld.org\/index.php?rest_route=\/wp\/v2\/posts\/5387","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scientificworld.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scientificworld.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scientificworld.org\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/scientificworld.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5387"}],"version-history":[{"count":1,"href":"https:\/\/scientificworld.org\/index.php?rest_route=\/wp\/v2\/posts\/5387\/revisions"}],"predecessor-version":[{"id":5388,"href":"https:\/\/scientificworld.org\/index.php?rest_route=\/wp\/v2\/posts\/5387\/revisions\/5388"}],"wp:attachment":[{"href":"https:\/\/scientificworld.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5387"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scientificworld.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5387"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scientificworld.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5387"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}