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Método colorimétrico para determinação de dióxido de nitrogênio atmosférico com preconcentração em coluna de c-18
(Sociedade Brasileira de Química, 2002-05-01)
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 ...
Colorimetric determination of atmospheric nitrogen dioxide using preconcentration on C-18 cartridge.
(Soc Brasileira Quimica, 2002-05-01)
COLORIMETRIC DETERMINATION OF ATMOSPHERIC NITROGEN DIOXIDE USING PRECONCENTRATION ON C-18 CARTRIDGE, An alternative analytical method for nitrogen dioxide (NO,) in atmosphere was developed. The collection of NO, is performed ...
Método colorimétrico para determinação de dióxido de nitrogênio atmosférico com preconcentração em coluna de C-18
(2002-05-01)
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 ...
Microextraction of non-steroidal anti-inflammatory drugs from waste water samples by rotating-disk sorptive extraction
(Elsevier, 2014)
In this study, six non-steroidal anti-inflammatory drugs (NSAIDs) were extracted from water samples using the rotating-disk sorptive extraction (RDSE) technique. The extraction disk device contains a central cavity that ...
Síntesis y caracterización de silicatos de calcio nano-estructurados modificados con Mg(II) y Fe(III) para su aplicación en la remoción de fosfatos y arseniatos desde aguas ácidas de mina
(Universidad de Chile, 2015)
En esta Memoria se estudió la síntesis y caracterización de silicatos de calcio
nano-estructurados modificados con Mg y Fe para su uso como adsorbente
para la remoción de iones fosfatos y arseniatos respectivamente, en ...
Determinação de losartana e valsartana em plasma humano empregando extração em fase sólida à base de nanotubos de nitreto de boro e cromatografia a líquido de alta eficiência.
(Universidade Federal de Minas GeraisBrasilFARMACIA - FACULDADE DE FARMACIAPrograma de Pós-Graduação em Ciências FarmacêuticasUFMG, 2021-10-21)
The determination of drugs in biological fluids can be done for different purposes. However, the
complexity of these matrices can make the sample preparation step challenging. Solid phase extraction has
been one of the ...
TEOS as an improved alternative for chitosan beads cross-linking: A comparative adsorption study
(John Wiley & Sons Inc, 2014-11)
In this work the use of tetraethoxysilane (TEOS) for cross-linking of chitosan hydrogel beads was studied at the level of 1 mmol TEOS per gram of chitosan. They were compared with glutaraldehyde and epichlorohydrin ...