{"id":1022,"date":"2009-12-22T10:40:59","date_gmt":"2009-12-22T10:40:59","guid":{"rendered":"http:\/\/www.jpyro.com\/wp\/?p=1022"},"modified":"2013-11-14T08:54:51","modified_gmt":"2013-11-14T08:54:51","slug":"emissions-of-reaction-products-and-sound-from-outdoor-and-indoor-firework-displays","status":"publish","type":"post","link":"http:\/\/www.jpyro.co.uk\/?p=1022","title":{"rendered":"Emissions of Reaction Products and Sound from Outdoor and Indoor Firework Displays"},"content":{"rendered":"<p><strong>Andreas Dutschke, \u00a0Stefan Seeger, Lutz Kurth, Ulrich Pannea, and Christian Lohrer<\/strong><\/p>\n<p><strong>Abstract<\/strong>: This work presents results of investigations towards the emission of chemical reaction products and sound pressure during an outdoor and an indoor firework display. Potentially harmful and toxic gases, and aerosols, were measured as well as sound pressures. Aerosols were measured with a Differential Mobility Analyzer (DMA) as well as a Laser Particle Counter. The focus was on particles with diameters between 11\u00a0nm and 20\u00a0\u03bcm. A transportable Fourier Transform Infrared (FTIR) spectroscopy detector registered the concentrations of emitted reaction gases, simultaneously. During the outdoor firework display, peak particle concentrations of &gt;550\u2009000 particles\u00a0cm\u22123, equivalent to a mass concentration of approximately 3.95\u00a0mg\u00a0m\u22123, were detected, revealing a concentration maximum at approximately 175\u00a0nm particle diameter. The time-averaged particle mass concentration did not exceed 1.58\u00a0mg\u00a0m\u22123 over 15 minutes. Due to the large distances (110\u00a0m) to the firing points, no significant harmful or toxic gas concentrations were measured during the entire firework display.\u00a0 In contrast, concentrations of sulphur dioxide (SO2) rose after an indoor firework display in a large event hall. On two days, more than 23\u2009000 particles\u00a0cm\u22123 (which equates to a mass concentration of approximately 0.41\u00a0mg\u00a0m\u22123) were detected when the hall ventilation was turned off, and more than 11\u2009000 particles\u00a0cm\u22123 (which equates to a mass concentration of approximately 1.18\u00a0mg\u00a0m\u22123) when the hall ventilation was activated. Concentration maxima appeared at approximately 300\u00a0nm particle diameter. The time-averaged particle concentrations in this case did not exceed 0.56\u00a0mg\u00a0m\u22123 (over 15\u00a0minutes).<\/p>\n<p><strong>Keywords:<\/strong> pyrotechnic articles, aerosols, combustion gase<\/p>\n<hr \/>\n<p><strong>Ref:<\/strong> JPyro, Issue 28, 2009, pp78-94<br \/>\n(J28_78)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Andreas Dutschke, \u00a0Stefan Seeger, Lutz Kurth, Ulrich Pannea, and Christian Lohrer Abstract: This work presents results of investigations towards the emission of chemical reaction products and sound pressure during an outdoor and an indoor firework display. Potentially harmful and toxic gases, and aerosols, were measured as well as sound pressures. Aerosols were measured with a &hellip;<br \/><a href=\"http:\/\/www.jpyro.co.uk\/?p=1022\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\">Continue reading <span class=\"screen-reader-text\">Emissions of Reaction Products and Sound from Outdoor and Indoor Firework Displays<\/span><\/a><\/p>\n","protected":false},"author":2,"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\/1022"}],"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\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1022"}],"version-history":[{"count":9,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1022\/revisions"}],"predecessor-version":[{"id":1633,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1022\/revisions\/1633"}],"wp:attachment":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1022"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}