Adsorption/Desorption of Hg(II) on FDU-1 Silica and FDU-1 Silica Modified with Humic Acid

Autor: Jorge C. Masini, Márcia Carvalho de Abreu Fantini, Fernando H. do Nascimento, Carlos M. C. Infante, I.C. Cosentino, Ricardo de Prá Urio, Luis Carlos Cides da Silva, Jivaldo do Rosário Matos

Publikováno v: Separation Science and Technology. 50:984-992

Incorporation of humic acid in the FDU-1 mesoporous silica improved Hg(II) adsorption and did not destroy the ordered network, providing surface area of 500 m2 g−1, pore volume of 0.9 cm3 g−1, and mean pore diameter of 10 nm. Carboxylic and pheno

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf31bab6f8f4d307dc9b16f8ede8deee
https://doi.org/10.1080/01496395.2014.983246

Development of a fluorimetric sequential injection analysis (SIA) methodology for determination of quinine

Autor: Jorge C. Masini, Carlos M. C. Infante

Publikováno v: Journal of the Brazilian Chemical Society v.22 n.10 2011
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 22, Issue: 10, Pages: 1888-1893, Published: OCT 2011

A sequential injection analysis (SIA) methodology was developed for fluorimetric determination of quinine in soft drinks. Minimum dispersion and efficient mixing were achieved by aspirating 200 mL of sample between two 100 mL reagent zones (0.10 mol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e88676c1f1d7d63d999c050517539e4
https://doi.org/10.1590/s0103-50532011001000009

Improving the Detectability of Sequential Injection Chromatography (SIC): Determination of Triazines by Exploiting Liquid Core Waveguide (LCW) Detection

Autor: Ricardo de Prá Urio, Jorge C. Masini, Carlos M. C. Infante

Publikováno v: Analytical Letters. 44:503-513

Coupling a liquid core waveguide cell to a sequential injection chromatograph improved the detection limits for determination of triazine herbicides without compromising peak resolution. Separation of simazine, atrazine, and propazine was achieved in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c8b115af4b86c214488ba5a04ff00caa
https://doi.org/10.1080/00032719.2010.500787

A green flow-based procedure for fluorimetric determination of acid-dissociable cyanide in natural waters exploiting multicommutation

Autor: Fábio R.P. Rocha, Jorge C. Masini, Carlos M. C. Infante

Publikováno v: Analytical and Bioanalytical Chemistry. 391:2931-2936

A flow system designed with solenoid valves is proposed for determination of weak acid dissociable cyanide, based on the reaction with o-phthalaldehyde (OPA) and glycine yielding a highly fluorescent isoindole derivative. The proposed procedure minim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a72e61e86a4f4bbe227e6f0a7b81947e
https://doi.org/10.1007/s00216-008-2206-6

Development and critical comparison of greener flow procedures for nitrite determination in natural waters

Autor: Wanessa R. Melchert, Fábio R.P. Rocha, Carlos M. C. Infante

Publikováno v: Microchemical Journal. 85:209-213

Two greener procedures for flow-injection spectrophotometric determination of nitrite in natural waters were developed and critically compared. Replacement of toxic reagents, waste minimization and treatment were exploited to attend the standards of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35e7f79a0ae9cf7dbddb0166d0207c0e
https://doi.org/10.1016/j.microc.2006.05.010