2026-04-28T03:59:54Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/49812024-07-18T09:59:44Zcom_10259_9433com_10259_5087com_10259_2728col_10259_9434
Herrero Gutiérrez, Ana
282
500
0000-0001-6126-1907
Sanllorente Méndez, Silvia
522
500
0000-0001-8693-8806
Martín Tapia, Eva
6a6fb0a0-7f6d-488c-9407-9ae3ea225291
500
Universidad de Burgos. Departamento de Química
cdb9be44-6a4e-4c59-a087-29b53a5cbbc9
500
2018-10-24T10:55:24Z
2018-10-24T10:55:24Z
2018
http://hdl.handle.net/10259/4981
Los ftalatos son compuestos utilizados como plastificantes; su presencia está regulada, sin embargo, el diisobutil ftalato (DiBP) aún no está sujeto a prohibición en la UE. Aquí, se aborda su determinación cuantitativa en líquidos mediante espectroscopia infrarroja con transformada de Fourier en el modo reflexión total atenuada (ATR-FTIR). Se utilizan la regresión de componentes principales (PCR) y por mínimos cuadrados parciales (PLS).
Se estudia el análisis directo de DiBP en ciclohexano. Se evalúa qué efecto tienen usar ciclohexano o aire para registrar el espectro del fondo, el número de barridos que se registran, y el pretratamiento de los datos espectrales. Se calculan algunas figuras de mérito; encontrando capacidades de detección sobre 2.000-3.000 ppm ( = = 0.05).
Se incluye una etapa de preconcentración para incrementar la sensibilidad; se estudia la influencia del número de depósitos. Se alcanzan capacidades de detección de hasta 52 ppm ( = = 0.05).
Phthalates are a group of synthetic compounds widely used as plasticizers, mainly
used to increase plastic flexibility, resistance and durability. These substances may be
found in toys, cosmetics, plastic bottles, etc. Their presence in some fields is regulated
to avoid risks to the health. Diisobutyl phthalate (DiBP) is among these phthalates,
many of which are banned in toys, childcare articles or cosmetics; however, DiBP has
so far not been subjected to EU ban.
The determination of DiBP in liquid samples by means of attenuated total
reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy is approached in this
work. Soft multivariate regression models, principal component regression (PCR) and
partial least squares regression (PLS), are used for the quantitative analysis.
The level of concentration for the direct analysis of DiBP in cyclohexane is studied.
It is assessed what effect the use of cyclohexane or air to collect the background
spectrum, the number of scans to be collected in the sample measurement, and the
pretreatment of spectral data have on the analytical determination. Some figures of
merit are calculated to establish the performance of the analytical method. Values of
the capability of detection around 2.000-3.000 ppm are achieved (a = b = 0.05).
A preconcentration step is included in the method in order to increase its sensitivity.
The influence of the number of depositions on the performance of the analytical
method is studied. Capabilities of detection down to 52 ppb are reached (a = b = 0.05).
application/pdf
spa
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
Este documento está sujeto a una licencia de uso Creative Commons, por la cual está permitido hacer copia, distribuir y comunicar públicamente la obra siempre que se cite al autor original y no se haga de él uso comercial ni obra derivada
info:eu-repo/semantics/openAccess
diisobutil ftalato
ATR-FTIR
análisis multivariante
determinación cuantitativa
diisobutyl phthalate
multivariate analysis
quantitative determination
Química analítica
Chemistry, Analytic
Determinación cuantitativa de diisobutil ftalato en líquidos mediante ATR-FTIR: estudio inicial
info:eu-repo/semantics/bachelorThesis
info:eu-repo/semantics/acceptedVersion
CC-LICENSE
license_rdf
license_rdf
application/rdf+xml; charset=utf-8
805
https://riubu.ubu.es/bitstream/10259/4981/8/license_rdf
4460e5956bc1d1639be9ae6146a50347
MD5
8
THUMBNAIL
Martin_Tapia.pdf.jpg
Martin_Tapia.pdf.jpg
IM Thumbnail
image/jpeg
5074
https://riubu.ubu.es/bitstream/10259/4981/7/Martin_Tapia.pdf.jpg
9241461a1cbcc2e862ecee5b97b35df0
MD5
7
ORIGINAL
Martin_Tapia.pdf
Martin_Tapia.pdf
application/pdf
1220695
https://riubu.ubu.es/bitstream/10259/4981/1/Martin_Tapia.pdf
a9f196eba936c1fc412e07cec2a66be7
MD5
1
LICENSE
license.txt
license.txt
text/plain; charset=utf-8
1362
https://riubu.ubu.es/bitstream/10259/4981/5/license.txt
5d013bfa6e473ff0db22cd82a4d71a70
MD5
5
TEXT
Martin_Tapia.pdf.txt
Martin_Tapia.pdf.txt
Extracted text
text/plain
60844
https://riubu.ubu.es/bitstream/10259/4981/6/Martin_Tapia.pdf.txt
d30fcd5f9b6b5cae9d169bb92ae98051
MD5
6
10259/4981
oai:riubu.ubu.es:10259/4981
2024-07-18 11:59:44.871
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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