| dc.contributor | Universidade Estadual Paulista (UNESP) | |
| dc.creator | Ugucione, Cássia | |
| dc.creator | Gomes Neto, José de Anchieta | |
| dc.creator | Cardoso, Arnaldo Alves | |
| dc.date | 2014-05-20T14:19:35Z | |
| dc.date | 2016-10-25T17:41:09Z | |
| dc.date | 2014-05-20T14:19:35Z | |
| dc.date | 2016-10-25T17:41:09Z | |
| dc.date | 2002-05-01 | |
| dc.date.accessioned | 2017-04-05T22:31:47Z | |
| dc.date.available | 2017-04-05T22:31:47Z | |
| dc.identifier | Química Nova. Sociedade Brasileira de Química, v. 25, n. 3, p. 352-357, 2002. | |
| dc.identifier | 0100-4042 | |
| dc.identifier | http://hdl.handle.net/11449/25904 | |
| dc.identifier | http://acervodigital.unesp.br/handle/11449/25904 | |
| dc.identifier | 10.1590/S0100-40422002000300003 | |
| dc.identifier | S0100-40422002000300003 | |
| dc.identifier | S0100-40422002000300003.pdf | |
| dc.identifier | http://dx.doi.org/10.1590/S0100-40422002000300003 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/870735 | |
| dc.description | An alternative analytical method for nitrogen dioxide (NO2) in atmosphere was developed. The collection of NO2 is performed by a Sep-Pack C-18 cartridge impregnated with 11% (v/v) of triethanolamine plus 3,6 % (v/v) of ethylene glycol plus 25 % (v/v) of acetone combined solution. When the impregnating is used, NO2 is collected with good repeatibility (CV = 3,3 %). The NO2 absorbed in the sampler was stripped from the sorbent with a methanol 5% (v/v) aqueous solution and was determined by colorimetry as nitrite by using the Griess-Saltzman reagent. The detection limit of 1,4 ppb for 60 min sampling at 0,5 L min-1 flow rate was obtained. Preparation and conditioning procedures for TEA-C-18 cartridge, sampling flow rate, absorption capacity and interference of other species are discussed. | |
| dc.description | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
| dc.description | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
| dc.language | por | |
| dc.publisher | Sociedade Brasileira de Química | |
| dc.relation | Química Nova | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.subject | nitrogen dioxide | |
| dc.subject | triethanolamine | |
| dc.subject | Griess Saltzman reagent | |
| dc.title | Método colorimétrico para determinação de dióxido de nitrogênio atmosférico com preconcentração em coluna de c-18 | |
| dc.type | Otro | |
