TITLE:
Identification of Cu in Crassostrea virginica Tissue Using the Technique of Laser-Induced Breakdown Spectroscopy (LIBS)
AUTHORS:
Xochitl Patricia Urrutia-Meza, Fabio Felipe Chalé-Lara, Rogelio Ortega-Izaguirre
KEYWORDS:
LIBS, Crassostrea virginica, Heavy Metals
JOURNAL NAME:
Optics and Photonics Journal,
Vol.11 No.3,
March
22,
2021
ABSTRACT: The analysis of metals in aquatic organisms is of great importance due to
the health problems they can cause to be consumed by human beings. In this
study, the Laser-Induced Plasma Spectroscopy (LIBS) technique is evaluated as
an alternative method to identify Cu in Crassostrea virginica oysters’ tissue. It focuses on the
characterization of oysters caught a natural bank and the identification of
different Cu concentrations. To carry out experimentation, oyster samples were
collected in autumn (October 2017) and spring (May 2018) from San Andres
Lagoon, Aldama, Tamaulipas. A single pulse Nd:YAG laser (1064 nm) was used, and
tissue was contaminated with 0, 2, 10, 20, 50, and 100 μg/g of Cu. In tissue
were identified atomic lines for Ca, Cr, Mg, Mn, Na, N, O, and H. However, the
intensities of emission lines for autumn samples were greater than spring
samples. Cu emission lines at 324.6, 327.1, 510.3, 515.1, and 521.5 nm were
found for contaminated pills. The intensity of emission lines showed a linear
increase with the concentration; whereby, they can be used as calibration
curves to quantify Cu concentrations in oyster tissue.