{"id":1400,"date":"2011-12-19T09:53:27","date_gmt":"2011-12-19T09:53:27","guid":{"rendered":"http:\/\/www.jpyro.com\/wp\/?p=1400"},"modified":"2012-01-11T09:49:47","modified_gmt":"2012-01-11T09:49:47","slug":"a-proposal-to-quantify-trace-levels-of-hexachlorobenzene-in-fireworks","status":"publish","type":"post","link":"http:\/\/www.jpyro.co.uk\/?p=1400","title":{"rendered":"A proposal to quantify trace levels of hexachlorobenzene in fireworks"},"content":{"rendered":"<div id=\"_mcePaste\"><strong>Tom Smith and Martin Guest<\/strong><\/div>\n<div><strong><br \/>\n<\/strong><\/div>\n<div id=\"_mcePaste\"><strong>Abstrac<\/strong>t: Hexachlorobenzene, a persistent organic pollutant, may be present in firework compositions from four sources. \u00a0This paper makes a proposal to determine what \u201ctrace\u201d quantities of hexachlorobenzene may be found in firework compositions, particularly those originating in the Far East where HCB usage was common and contamination still exists. \u00a0Proposals are made to discriminate between deliberate use of HCB as an additive in firework compositions, as a deliberate \u201clet down\u201d agent in other colour enhancers and as an unintended trace contaminant.<\/div>\n<div id=\"_mcePaste\">We propose a cut-off limit of 50 ppm in a coloured star composition at which level analysis can conclude that the HCB has not been added deliberately.<\/div>\n<div id=\"_mcePaste\">Furthermore the destruction of HCB in the normal functioning of the fireworks is considered and shown to reduce any residual amounts of HCB to extremely low levels.<\/div>\n<div id=\"_mcePaste\"><strong>Keywords<\/strong>: HCB, Hexachlorobenzene, contamination<\/div>\n<hr \/>\n<div>\n<div>Ref:\u00a0JPyro, Issue 30, 2011, pp28-35<br \/>\n(J30_28)<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Tom Smith and Martin Guest Abstract: Hexachlorobenzene, a persistent organic pollutant, may be present in firework compositions from four sources. \u00a0This paper makes a proposal to determine what \u201ctrace\u201d quantities of hexachlorobenzene may be found in firework compositions, particularly those originating in the Far East where HCB usage was common and contamination still exists. \u00a0Proposals &hellip;<br \/><a href=\"http:\/\/www.jpyro.co.uk\/?p=1400\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\">Continue reading <span class=\"screen-reader-text\">A proposal to quantify trace levels of hexachlorobenzene in fireworks<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2,29],"tags":[],"_links":{"self":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1400"}],"collection":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1400"}],"version-history":[{"count":8,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1400\/revisions"}],"predecessor-version":[{"id":1402,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1400\/revisions\/1402"}],"wp:attachment":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1400"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}