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Identification of CaCO3 polymorphs of shellfish by FTIR spectroscopy and evaluation of metals adsorption by powdered exoskeleton shell

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Title Identification of CaCO3 polymorphs of shellfish by FTIR spectroscopy and evaluation of metals adsorption by powdered exoskeleton shell
 
Creator Singh, K S
Sawant, S G
 
Subject Bio-mineralization
Calcium carbonate
Infrared spectroscopy
Polymorph
Shellfish
 
Description 304-309
Shellfish are found in the coastal region throughout the tropical, sub-tropic and temperate zone. A variety of shellfish
species are known in nature. Being filter-feeding organisms, organic and inorganic substances easily gain entry into them.
Very often, heavy metals such as Cd, Pb, Cu, and even Hg can accumulate in their bodies. The presence of these heavy
metals in shellfish is an indicator of environmental pollution, and a threat to humanity as these fish are widely consumed in
coastal regions. Here, biochemical analysis of exoskeleton shell mainly composed of polysaccharides, proteins and calcium
carbonate (CaCO3) - have been studied. Calcium carbonate (CaCO3) which is one of the major constituent of the
exoskeleton part of the shellfish exists in three polymorphs viz., calcite, aragonite and vaterite. The identification of CaCO3
polymorphs in shellfish is extremely important as it gives information on the structural arrangement of the calcium
carbonate lattice in these organisms. Here, we present a convenient method for the identification of CaCO3 polymorphs in
shellfish collected from Goa, west coast of India, with Fourier-Transform Infrared Spectroscopy (FTIR) and further
confirmed by powder X-ray analysis. Additionally, the potential of the powdered shell biomass for metal removal from an
aqueous medium has also been investigated.
 
Date 2022-07-28T11:29:19Z
2022-07-28T11:29:19Z
2022-04
 
Type Article
 
Identifier 2582-6727 (Online); 2582-6506 (Print)
http://nopr.niscpr.res.in/handle/123456789/60194
 
Language en
en
 
Publisher NIScPR-CSIR,India
 
Source IJMS Vol.51(04) [April 2022]