Fiber Optic Coupled Raman Based Detection of Hazardous Liquids Concealed in Commercial Products

<table>PLS-based discriminant analysis of TEP in different varieties of Gatorade. A positive value (1) implies presence of TEP, and a negative value (−1) do not contain TEP. Values close to the threshold line (<svg height="7.9499998" id="M8" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 9.625 7.9499998" width="9.625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> axis) indicate that samples are close in spectral character making more challenging the discrimination. For <svg height="15.35" id="M9" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 53.1875 15.35" width="53.1875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> and 3 PC’s; <svg height="17.825001" id="M10" style="vertical-align:-1.59705pt" version="1.1" viewbox="0 0 492.98749 17.825001" width="492.98749" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>.</table>

International Journal of Spectroscopy

fig12

Figure 12

Figure 12: Fiber Optic Coupled Raman Based Detection of Hazardous Liquids Concealed in Commercial Products 