Controlled chemical delivery fiber optic sensor for analysis of DDT residues

Ashutosh Sharma; Sohail Hamid Sheikh

doi:10.1117/12.260997

10 December 1996 Controlled chemical delivery fiber optic sensor for analysis of DDT residues

Ashutosh Sharma, Sohail Hamid Sheikh

Proceedings Volume 2836, Chemical, Biochemical, and Environmental Fiber Sensors VIII; (1996) https://doi.org/10.1117/12.260997
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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.

Citation Download Citation

Ashutosh Sharma and Sohail Hamid Sheikh "Controlled chemical delivery fiber optic sensor for analysis of DDT residues", Proc. SPIE 2836, Chemical, Biochemical, and Environmental Fiber Sensors VIII, (10 December 1996); https://doi.org/10.1117/12.260997

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