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Proceedings Paper

Controlled chemical delivery fiber optic sensor for analysis of DDT residues
Author(s): Ashutosh Sharma; Sohail Hamid Sheikh
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Paper Abstract

A procedure has been developed for the separation, preconcentration and fiber optic analysis of DDT residues in soil and soil water. Solid phase extraction was achieved by polymer adsorbent columns, and the DDT fluorescence signal was compared to a stock working solution (25 (mu) M) of soiled tap water. The XAD-4 elluent was found to possess the highest DDT signal in relation to other adsorbents investigated. The method proved sensitive to analyze concentrations down to 1.2 (mu) M (approximately 400 (mu) g/L) and can be performed within 3 minutes of obtaining a soil sample. With this in mind we envisage the online application of such a procedure for the in-situ analysis of DDT residual values.

Paper Details

Date Published: 10 December 1996
PDF: 5 pages
Proc. SPIE 2836, Chemical, Biochemical, and Environmental Fiber Sensors VIII, (10 December 1996); doi: 10.1117/12.260997
Show Author Affiliations
Ashutosh Sharma, Cranfield Univ. (United Kingdom)
Sohail Hamid Sheikh, Cranfield Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 2836:
Chemical, Biochemical, and Environmental Fiber Sensors VIII
Robert A. Lieberman, Editor(s)

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