Abstracts Book - IMRC 2018

• SF5-P040
COLORIMETRIC DETECTION OF METALS IN WATER BY
BIODEGRADABLE SENSORY POLYMERS
Astrid Hernandez 1 , Hisila Santacruz Ortega 1 , Agustín Gómez Álvarez 2 , Rosa Elena Navarro
Gautrín 1
1 Universidad de Sonora, Departamento de Investigación en Polímeros y Materiales, Mexico.
2 Universidad de Sonora, Departamento de Ingeniería Química y Metalurgia, Mexico.
Routine analyzes for the quantifications of metals are performed using methods
that require highly skilled staff and costly equipment such as atomic absorption
spectroscopy or mass spectrometry. An alternative is the development of
molecules that allow the conversion of the concentration of the metals into
signals that can be read in accessible instruments or even to the naked eye,
especially if the signal is a color change. Among different types of chemosensors,
colorimetric sensors are especially attractive because it is possible to detect and
estimate the concentration of an analyte by naked eye, in addition to
quantification by more accessible techniques such as UV-Vis spectroscopy and
color analysis by RGB parameters.
Materials derived natural products receive special interest in the detection and
removal of metal ions in water. An example is the use of starch, which is a
biopolymer widely used in the industry due to its low cost and biodegradability.
In this work, starch and gelatin have been used to elaborate a colorimetric
sensor for Ni 2+ , Cu 2+ and Zn 2+ . The detection and quantification of the metals
was carried out by color analysis by RGB parameters. Once the values were
obtained, they were reduced to one component by principal component
analysis (PCA) and calibration curves for quantitative analysis were obtained.
Keywords: sensory polymers, colorimetric detection, metals
Presenting authors email: ahstrod.luna@gmail.com