Remote Detection of Organochlorides With a Fiber Optic Based Sensor Iii: Calibration and Field Evaluation of An Improved Chloroform Fiber Optic Chemical Sensor

Abstract
A dedicated portable fluorometer has been used with a capillary-well fiber-optic chemical sensor (FOCS) to develop a calibration method for this sensor for gaseous chloroform. The FOCS has been modified so that its operational reliability has been greatly improved. The complete remote fiber fluorimetry (RFF) device was used to characterize the chloroform contamination of a shallow water-well field. The lowest detected gaseous chloroform concentration was 1.2 ng/mL over an aqueous chloroform concentration of 12 ng/mL.