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United States Department of Agriculture

Agricultural Research Service

Research Project: MANAGEMENT TECHNOLOGIES FOR CONSERVATION OF WESTERN RANGELANDS

Location: Range Management Research

Title: Spectroscopic discernment of seed cotton trash

Authors
item Rayson, Gary -
item Gamez, Elizabeth -
item Jiang, Fengshan -
item Ghale, Surja -
item HUGHS, SIDNEY
item ANDERSON, DEAN

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: August 27, 2013
Publication Date: N/A

Technical Abstract: Detection and identification of foreign material in harvested seed cotton is required for efficient removal by ginning. Trash particles remaining within the cotton fibers can detrimentally impact the quality of resulting textile products. Luminescence has been investigated as a potential tool for such determinations. Specifically, excitation-Emission luminescence spectra of basic phosphate buffer solution extracts were used to distinguish among botanical components of trash within seed cotton. Each targeted material was separated from whole plants which were removed from a field in southern New Mexico. Following removal of Rayleigh scattering signals, application of unfolded principal component analysis (U-PCA) enabled distinction of seeds, stems, bracts and leaves as trash material. Model robustness was tested using replicate data sets. Additionally, parallel factor analysis (PARAFAC) was applied to these spectra and revealed three spectral factors enabling trash identification. Elucidated excitation and emission spectra of these factors exhibited excitation wavelengths of maximum intensity of 295, 320, and 400 nm and respective emission wavelengths of 348, 435, and 473 nm. The implications of these findings on the utility of luminescence spectroscopy for cotton trash identification will be discussed.

Last Modified: 9/29/2014
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