Download - Egyptian Petroleum Research Institute

Top 5 (High Impact Factor)
Mercury-ion optical sensors
Trends in analytical chemistry,vol.38,2012
Sherif A. El-Safty, 2, M.A. Shenashen1
The toxicity of mercury (Hg) to humans,
including damage to the nervous system, is well
known. Hg cannot be degraded into non-toxic
compounds or other elements. It is released
mainly through mining, industries, and fossil fuel
combustion. Anthropogenic and natural
activities, such as volcanoes, transform
elemental Hg (Hg0) into its ionic form [Hg(II)],
which bioaccumulates in biota and is
biomagnified in the food chain, notably in
aquatic environments.
With regard to proximal sensing, we consider
controlled assessment processes that involve
the evaluation of intrinsic properties (e.g., signal
change, long-term stability, adsorption
efficiency, extraordinary sensitivity, selectivity,
and reusability).
This study provides evidence that miniaturized
mesosensor strips can revolutionize consumer
and industrial markets with the introduction of
ion-sensor strips.
This critical report aims to control Hg(II)-ion
toxicity through risk assessment, recognition,
and removal via high-level waste management.
We first discuss successful and up-to-date
developments in different techniques, designs
and studies that are potentially useful in
enhancing the effectiveness of control of Hg(II)-
ion toxicity.
The key to design optical nanosensors is to
construct chromophore and fluorophore
receptors as nanoscale platform scavengers
with different functional characteristics (e.g.,
density, accessibility, and intrinsic mobility),
which allow for easy, reliable signaling in
continuous monitoring modes.
We highlight a Technique that depends on the
use of engineering mesocage materials that
have multidirectional cavities and microsized,
particle-like monoliths to control the
adsorption/detection of toxic metal ions,
especially Hg(II) ions.
EPRI Annual Report 2012 63