A critical review on the development of optical sensors for the determination of heavy metals in water samples. The case of mercury(II) ion
Fecha
2022-11-08
Título de la revista
ISSN de la revista
Título del volumen
Editor
American Chemical Society
Resumen
Descripción
Recent publications are reviewed concerning the development of sensors
for the determination of mercury in drinking water, based on spectroscopic
methodologies. A critical analysis is made of the specific details and figures of merit of
the developed protocols. Special emphasis is directed to the validation and applicability to
real samples in the usual concentration range of mercury, considering the maximum
allowed limits in drinking water established by international regulations. It was found that
while most publications describe in detail the synthesis, structure, and physicochemical
properties of the sensing phases, they do not follow the state of the art in the analytical
developments. Recommendations are provided regarding the proper method development and validation, including the setting of
the calibration concentration range, the correct estimation of the limits of detection and quantitation, the concentration levels to be
set for producing spiked water samples, the number of real samples for adequate validation, the comparison of the developed method
with a reference technique, and other analytical features which should be followed.
Palabras clave
Catalytic DNA, Aptasensors, Genetic Procedures