{"id":52420,"date":"2025-06-29T15:20:05","date_gmt":"2025-06-29T09:50:05","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=52420"},"modified":"2025-06-30T18:06:52","modified_gmt":"2025-06-30T12:36:52","slug":"secondary-pollutants","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/secondary-pollutants\/","title":{"rendered":"Secondary Pollutants"},"content":{"rendered":"<h2 style=\"text-align: justify;\"><b>Secondary Pollutants Latest News<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Secondary pollutants, particularly ammonium sulphate, are responsible for nearly one-third of India\u2019s fine particulate matter (PM2.5) pollution, said a study from the Centre for Research on Energy and Clean Air (CREA).<\/span><\/p>\n<h2 style=\"text-align: justify;\"><b>About Secondary Pollutants<\/b><\/h2>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Secondary pollutants are<\/span><b> pollutants which form in the atmosphere.\u00a0<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">These pollutants are<\/span><b> not emitted directly from a source<\/b><span style=\"font-weight: 400;\"> (like vehicles or power plants).<\/span>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Pollutants <\/b><span style=\"font-weight: 400;\">that are <\/span><b>emitted <\/b><span style=\"font-weight: 400;\">into the environment <\/span><b>from a source are called primary pollutants.<\/b><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Secondary pollutants <\/b><span style=\"font-weight: 400;\">form as a<\/span><b> result of the pollutants<\/b> <b>emitted from <\/b><span style=\"font-weight: 400;\">these <\/span><b>sources reacting with molecules in the atmosphere to form a new pollutant.\u00a0<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Examples<\/b><span style=\"font-weight: 400;\"> of secondary pollutants<\/span> <span style=\"font-weight: 400;\">are <\/span><b>ozone and secondary organic aerosol<\/b><span style=\"font-weight: 400;\"> (haze).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Secondary pollutants are <\/span><b>harder to control <\/b><span style=\"font-weight: 400;\">because they have<\/span><b> different ways of synthesizing,<\/b><span style=\"font-weight: 400;\"> and the formation is not well understood.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They form naturally in the environment and cause <\/span><b>problems like photochemical smog.<\/b>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The phenomenon of photochemical smog is a result of the<\/span><b> interactions of primary pollutants with<\/b><span style=\"font-weight: 400;\"> other<\/span><b> molecules<\/b><span style=\"font-weight: 400;\"> in the air,<\/span><b> such as molecular oxygen, water, and hydrocarbons. <\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">These <b style=\"font-size: inherit;\">combine to form yellow clouds<\/b><span style=\"font-weight: 400;\"> that are harmful to humans.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><b>Source<\/b><span style=\"font-weight: 400;\">: <\/span><a href=\"https:\/\/www.thehindu.com\/sci-tech\/energy-and-environment\/secondary-pollutants-constitute-up-to-third-of-pm25-pollution\/article69748715.ece\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">TH<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Secondary pollutants form in the atmosphere when primary pollutants from sources like vehicles or power plants react with other atmospheric compounds.<\/p>\n","protected":false},"author":23,"featured_media":52724,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[21,1155,22,23],"class_list":{"0":"post-52420","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-prelims-pointers","9":"tag-secondary-pollutants","10":"tag-upsc-current-affairs","11":"tag-upsc-prelims-current-affairs","12":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/52420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=52420"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/52420\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/52724"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=52420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=52420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=52420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}