Citas bibligráficas
Ruíz, G., (2017). Determinación selectiva del contaminante ambiental 1-cloro 2,4-dinitrobenceno basada en un magneto sensor electroquímico construido con polímero magnético de impresión molecular (m-MIP) [Tesis, Universidad Nacional de Ingeniería]. http://hdl.handle.net/20.500.14076/9146
Ruíz, G., Determinación selectiva del contaminante ambiental 1-cloro 2,4-dinitrobenceno basada en un magneto sensor electroquímico construido con polímero magnético de impresión molecular (m-MIP) [Tesis]. : Universidad Nacional de Ingeniería; 2017. http://hdl.handle.net/20.500.14076/9146
@misc{renati/261243,
title = "Determinación selectiva del contaminante ambiental 1-cloro 2,4-dinitrobenceno basada en un magneto sensor electroquímico construido con polímero magnético de impresión molecular (m-MIP)",
author = "Ruíz Córdova, Gerson Alessandro",
publisher = "Universidad Nacional de Ingeniería",
year = "2017"
}
This work proposes the development of a method to determine selectively and sensibly the environmental pollutant 1-chloro 2,4-dinitrobenzene (CDNB) by using a magnetic-sensor, which recognition material consist of modified magnetic nanoparticles with moleculary imprinted polymers (m-MIP) selective to CDNB, which is also electrochemically active, and will be of use for quantification applying electrochemical techniques such as cyclic or pulse voltammetry. The formation of the m-MIP electrode was made of a magnetized carbon electrode (m-CGE) and a heterogenic m-MIP CDNB solution with a glycine buffer, this solution was stirred by 2 hours for a better dispersion, then m-CGE was introduced by 20s to get the m-MIP electrode. The measures were done in a electrochemical cell of 3 electrodes containing Britton-Robinson buffer (pH 2) and ethanol in the proportion 9:1 (v/v), with a previous stage of pre-concentration by 15min at 60ºC. The selectivity of the sensor was evaluated with 8 different compounds, sensor detected p-dimethylaminoazobenzene, p-nitrobenzeneazoresorcinol y dinitrobenzene, obtaining equivalent currents 49.56%, 33.37% y 41.66% of analyte signal. Meaning that the sensor is highly selective. A lineal range between 4 and 50 mg L-1, adjusted with the lineal equation i (A) = (2.92 ± 0.05) x [CDNB] (mg.L-1) – (9 ± 1) . The repetibility of the flims were evaluated in five different days in function of RSD value, being equal to 2.7%, showing a recovery coefficient of 105.4% ± 3.7.
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