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http://acervodigital.unesp.br/handle/11449/33697
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DC Field | Value | Language |
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dc.contributor.author | Gigante, A. C. | - |
dc.contributor.author | Gotardo, M. A. | - |
dc.contributor.author | Tognolli, J. O. | - |
dc.contributor.author | Pezza, Leonardo | - |
dc.contributor.author | Pezza, Helena Redigolo | - |
dc.date.accessioned | 2014-05-20T15:22:46Z | - |
dc.date.accessioned | 2016-10-25T17:56:33Z | - |
dc.date.available | 2014-05-20T15:22:46Z | - |
dc.date.available | 2016-10-25T17:56:33Z | - |
dc.date.issued | 2004-05-01 | - |
dc.identifier | http://dx.doi.org/10.1016/j.microc.2003.12.002 | - |
dc.identifier.citation | Microchemical Journal. Amsterdam: Elsevier B.V., v. 77, n. 1, p. 47-51, 2004. | - |
dc.identifier.issn | 0026-265X | - |
dc.identifier.uri | http://hdl.handle.net/11449/33697 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/33697 | - |
dc.description.abstract | In the present study. a spectrophotometric method for the determination of formaldehyde by using chromotropic acid was devised. in which the use of potentially hazardous and corrosive concentrated sulfuric acid was eliminated and advantageously C replaced by a mixture of H, concentrated H3PO4 and H2O2. The reaction between formaldehyde and chromotropic acid (CA) in a cone phosphoric acid medium was accelerate by irradiating the mixture with microwave energy for 35 s (1100 W), producing a violetred compound (lambda(max)=570 nm). Beer's Law is obeyed in a concentration range of 0.8-4.8 mg 1(-1) of formaldehyde with a good correlation coefficient (r = 0.9968). The proposed method was applied in the analysis of formaldehyde in commercial disinfectants. Recoveries were within 98.0-100.4%, with standard deviations ranging from 0.03 to 0.13%. (C) 2003 Elsevier B.V All rights reserved. | en |
dc.format.extent | 47-51 | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.source | Web of Science | - |
dc.subject | formaldehyde | pt |
dc.subject | chromotropic acid | pt |
dc.subject | spectrophotometry | pt |
dc.subject | microwave oven | pt |
dc.title | Spectrophotometric determination of formaldehyde with chromotropic acid in phosphoric acid medium assisted by microwave oven | en |
dc.type | outro | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.description.affiliation | UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil | - |
dc.description.affiliationUnesp | UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil | - |
dc.identifier.doi | 10.1016/j.microc.2003.12.002 | - |
dc.identifier.wos | WOS:000221065100008 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Microchemical Journal | - |
dc.identifier.orcid | 0000-0003-0197-7369 | pt |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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