{"id":672132,"date":"2025-05-29T01:15:20","date_gmt":"2025-05-28T22:15:20","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/filtered-car-emissions-still-turn-toxic-after-sunlight-exposure-study-reveals\/"},"modified":"2025-05-29T01:15:20","modified_gmt":"2025-05-28T22:15:20","slug":"filtered-car-emissions-still-turn-toxic-after-sunlight-exposure-study-reveals","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/filtered-car-emissions-still-turn-toxic-after-sunlight-exposure-study-reveals\/","title":{"rendered":"Filtered car emissions still turn toxic after sunlight exposure, study reveals"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a40b19100918\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a40b19100918\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/filtered-car-emissions-still-turn-toxic-after-sunlight-exposure-study-reveals\/#Lab-based_emission_standards_overlook_atmospheric_transformation\" >Lab-based emission standards overlook atmospheric transformation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/filtered-car-emissions-still-turn-toxic-after-sunlight-exposure-study-reveals\/#Atmospheric_aging_demands_an_updated_approach_to_pollution_control\" >Atmospheric aging demands an updated approach to pollution control<\/a><\/li><\/ul><\/nav><\/div>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2021\/car-exhaust.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2021\/car-exhaust.jpg\" data-sub-html=\"Credit: Unsplash\/CC0 Public Domain\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2021\/car-exhaust.jpg\" alt=\"car exhaust\" title=\"Credit: Unsplash\/CC0 Public Domain\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Credit: Unsplash\/CC0 Public Domain<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>A new international study led by Helmholtz Munich and the University of Rostock reveals that emissions from modern gasoline cars\u2014despite meeting the currently strictest European emission standards EURO 6d\u2014can become significantly more harmful after being released into the atmosphere. The findings, <a rel=\"nofollow\" target=\"_blank\" href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.adq2348\" target=\"_blank\">published<\/a> in <i><a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a> Advances<\/i>, challenge the assumption that filtered exhaust from EURO 6d-compliant vehicles is inherently safe.<\/p>\n<p>The research focused on a gasoline vehicle equipped with a gasoline particulate filter (GPF), designed to drastically reduce primary particulate emissions. Freshly emitted exhaust showed no detectable cytotoxic effects on human lung cells. However, once the exhaust underwent &#8220;photochemical aging&#8221;\u2014a natural transformation process driven by sunlight and atmospheric oxidants\u2014it became substantially more toxic.<\/p>\n<p>The aged emissions caused notable DNA damage and oxidative stress in both cancerous alveolar and normal bronchial epithelial cells. This toxicity was not only associated with newly formed particles, known as secondary organic and inorganic aerosols (SOA and SIA), but also with oxygenated volatile compounds, such as carbonyls, generated during their residence in the atmosphere.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Lab-based_emission_standards_overlook_atmospheric_transformation\"><\/span>Lab-based emission standards overlook atmospheric transformation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>According to Dr. Mathilde Delaval, first author of the study and researcher at Helmholtz Munich, these findings point to a critical shortfall in current vehicle emissions testing and regulation.<\/p>\n<p>While EURO 6d standards ensure low emissions at the tailpipe, they do not account for the chemical transformations those emissions undergo once released into the environment. &#8220;Our study shows that we are missing a big part of the picture by not considering how exhaust gases change\u2014and become more harmful\u2014after they leave the car,&#8221; she said.<\/p>\n<p>The results have important implications for how air quality standards are set and monitored. Current regulations focus primarily on the emissions measured directly after combustion, without factoring in how these emissions interact with sunlight and atmospheric chemicals to form new, more harmful pollutants.<\/p>\n<p>&#8220;There&#8217;s a clear disconnect between how we test vehicle emissions in the lab and how those emissions behave in the real world,&#8221; said co-author Dr. Hendryk Czech from Helmholtz Munich and the University of Rostock. &#8220;If we ignore what h<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>ens to exhaust after it enters the atmosphere, we risk underestimating the true health impact of traffic-related air pollution.&#8221;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Atmospheric_aging_demands_an_updated_approach_to_pollution_control\"><\/span>Atmospheric aging demands an updated approach to pollution control<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Air pollution remains a major global health issue, responsible for increased rates of respiratory and cardiovascular disease, cancer, and premature death. The discovery that filtered emissions from even the cleanest gasoline cars can still become toxic once airborne suggests that future regulations must evolve to address both primary and secondary pollutants.<\/p>\n<p>This study was a joint effort by a multidisciplinary team of biologists, aerosol physicists, and chemists investigating the health impacts of air pollution.<\/p>\n<p>Together, these researchers deliver a clear and urgent message: regulating tailpipe emissions is no longer enough. To truly protect public health, emission standards must also account for how exhaust gases evolve\u2014and become more toxic\u2014once released into the atmosphere.<\/p>\n<div class=\"article-main__more p-4\">\n<p><strong>More information:<\/strong><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tMathilde N. Delaval et al, The efficiency of EURO 6d car particulate filters is compromised by atmospheric aging: In vitro toxicity of gasoline car exhaust, <i>Science Advances<\/i> (2025). <a rel=\"nofollow\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1126\/sciadv.adq2348\" target=\"_blank\">DOI: 10.1126\/sciadv.adq2348<\/a><\/p>\n<\/p><\/div>\n<div class=\"d-inline-block text-medium mt-4\">\n<p>\n\t\t\t\t\t\t\t\t\t\t\t\t\tProvided by<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tUniversity of Rostock<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" target=\"_blank\" class=\"icon_open\" href=\"https:\/\/www.uni-rostock.de\/en\/\" target=\"_blank\" rel=\"nofollow\"><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<use href=\"https:\/\/phys.b-cdn.net\/tmpl\/v6\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<\/p><\/div>\n<p>\t\t\t\t\t\t\t\t\t\t<!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>\n\t\t\t\t\t\t\t\t\t\t\t\t<strong>Citation<\/strong>:<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tFiltered car emissions still turn toxic after sunlight exposure, study reveals (2025, May 28)<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tretrieved 28 May 2025<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tfrom https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2025-05-filtered-car-emissions-toxic-sunlight.html\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n<p>\n\t\t\t\t\t\t\t\t\t\t\t This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n\t\t\t\t\t\t\t\t\t\t\t part may be reproduced without the written permission. The content is provided for information purposes only.\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMN63nwsw68G3Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/category\/sciencee\/\" target=\"_blank\" >Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/phys.org\/news\/2025-05-filtered-car-emissions-toxic-sunlight.html\" target=\"_blank\" >Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Credit: Unsplash\/CC0 Public Domain A new international study led by Helmholtz Munich and the University of Rostock reveals that emissions from modern gasoline cars\u2014despite meeting the currently strictest European emission standards EURO 6d\u2014can become significantly more harmful after being released into the atmosphere. The findings, published in Science Advances, challenge the assumption that filtered exhaust&#8230;<\/p>\n","protected":false},"author":1,"featured_media":672133,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2021\/car-exhaust.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-672132","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/672132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=672132"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/672132\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/672133"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=672132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=672132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=672132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}