Oppenheimer, C.Tsanev, VIAllen, A. G.McGonigle, AJSCardoso, Arnaldo Alves [UNESP]Wiatr, A.Paterlini, W.De Mello, C.2014-05-202014-05-202004-09-01Environmental Science & Technology. Washington: Amer Chemical Soc, v. 38, n. 17, p. 4557-4561, 2004.0013-936Xhttp://hdl.handle.net/11449/38742We report here on the application of a compact ultraviolet spectrometer to measurement of NO2 emissions from sugar cane field burns in São Paulo, Brazil, the time-resolved NO2 emission from a 10 ha plot peaked at about 240 g (NO2) s(-1), and amounted to a total yield of approximately 50 kg of N, or about 0.5 g (N) m(-2). Emission of N as NOx (i.e., NO + NO2) was estimated at 2.5 g (N) in 2, equivalent to 30% of applied fertilizer nitrogen. The corresponding annual emission of NOx nitrogen from São Paulo State sugar cane burning was >45 Gg N. In contrast to mechanized harvesting, which does not require prior burning of the crop, manual harvesting with burning acts to recycle nitrogen into surface soils and ecosystems.4557-4561engArtigo10.1021/es0496219WOS:000223678900022Acesso restrito9165109840414837