8 documents found, page 1 of 1
Validação de método por MEFS-HS/CG-EM para determinação de Carbaril em plasma s...
Souza, Francisco Thiago C. de; Camelo, André Luiz Melo; Marques, Ricardo de Araújo; Ferreira Filho, Luiz Ivando Pires; Pinheiro, Ronald F.METHOD VALIDATION FOR HS-SPME / GC-MS FOR DETERMINATION OF CARBARYL IN BLOOD PLASMA. The aim this research is to develop a HS-SPME/GC–MS method to analyze the carbaryl in blood plasma samples of the rural workers, who live round the perimeter of Chapada do Apodi-CE. This was achieved by chromatographic signal of the 1-naftol, degradation product of carbaryl with the intention of evaluating the degree of exposur...
Application of the QuEChERS method for the determination of organochlorine pest...
Paz, Mário; Correia-Sá, Luísa; Vidal, Carla B.; Becker, Helena; Longhinotti, Elisane; Domingues, Valentina F.; Delerue-Matos, CristinaThe Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method was applied to the extraction of 14 organochlorine pesticides (OCPs) residues from commercial fruit pulps available in supermarkets in Fortaleza, Northeastern Brazil. The analyses were carried out by gas chromatography (GC), coupled to an electron-capture detector (ECD), and were confirmed by GC-tandem mass spectrometry (MS). The parameters o...
Brazilian fruit pulps as functional foods and additives: evaluation of bioactiv...
Paz, Mário; Gúllon, Patricia; Barroso, M. Fátima; Carvalho, Ana P.; Domingues, Valentina F.; Gomes, Ana M.; Becker, Helena; Longhinotti, ElisaneEight tropical fruit pulps from Brazil were simultaneously characterised in terms of their antioxidant and antimicrobial properties. Antioxidant activity was screened by DPPH radical scavenging activity (126-3987 mg TE/100 g DW) and ferric reduction activity power (368-20819 mg AAE/100 g DW), and complemented with total phenolic content (329-12466 mg GAE/100 g DW) and total flavonoid content measurements (46-67...
Brazilian fruit pulps as functional foods and additives: Evaluation of bioactiv...
Paz, Mário; Gúllon, Patricia; Barroso, M. Fátima; Carvalho, Ana P.; Domingues, Valentina F.; Gomes, Ana M.; Becker, Helena; Longhinotti, ElisaneEight tropical fruit pulps from Brazil were simultaneously characterised in terms of their antioxidant and antimicrobial properties. Antioxidant activity was screened by DPPH radical scavenging activity (126–3987 mg TE/100 g DW) and ferric reduction activity power (368–20819 mg AAE/100 g DW), and complemented with total phenolic content (329–12466 mg GAE/100 g DW) and total flavonoid content measurements (46–67...
Validation of QuEChERS method for organochlorine pesticides analysis in tamarin...
Paz, Mário; Correia-Sá, Luísa; Becker, Helena; Longhinotti, Elisane; Domingues, Valentina F.; Delerue-Matos, CristinaIn this study a citrate-buffered version of QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method for determination of 14 organochlorine pesticides (OCPs) residues in tamarind peel, fruit and commercial pulp was optimized using gas chromatography (GC) coupled with electron-capture detector (ECD) and confirmation by GC tandem mass spectrometry (GC–MS/MS). Five procedures were tested based on the origi...
Studies of catalytic activity and coke deactivation of spinel oxides during eth...
Freire, Rafael M.; Sousa, Francisco F. de; Pinheiro, Anderson L.; Longhinotti, Elisane; Mendes Filho, J.; Oliveira, Alcemira ConceiçãoTexto completo: acesso restrito. p. 165-179; Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2013-10-11T12:08:24Z No. of bitstreams: 1 1-s2.0-S0926860X09001574-main.pdf: 834366 bytes, checksum: ff710893da1fa4171688240f210f8ac8 (MD5); Approved for entry into archive by Rodrigo Meirelles (rodrigomei@ufba.br) on 2013-11-18T21:18:58Z (GMT) No. of bitstreams: 1 1-s2.0-S0926860X09001574-main.pdf: 834366 bytes, ch...
Efeito catalítico de íons lantanídeos na hidrólise de ésteres de fostato
Longhinotti, ElisaneTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Química.; Estudos cinéticos, em valores de pH alcalinos, foram realizados para avaliar o efeito de íons La3+, Sm3+, Tb3+ e Er3+ na velocidade de hidrólise do diéster bis(2,4-dinitrofenil)fosfato, BDNPP. O tampão bis-Tris Propano BTP foi utilizado para estabilizar os íons Ln3+ em solu...
Adsorção dos corantes azul de metileno, alanjado G, alaranjado IV e alaranjado ...
Longhinotti, ElisaneDissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.; A quitina foi empregada para adsorver os corantes azul de metileno, alaranjado G, alaranjado IV e alaranjado de xilenol em soluções aquosas. O polímero foi caracterizado por espectroscopia de infravermelho e análise elementar (CHN). Os dados experimentais de adsorção foram interpretados pela equação de La...