Continuous Monitoring of Pink Water from Carbon Adsorption Process.
Abstract
An adaptation of a commercially available photometric analyzer has been evaluated for its suitability in measuring and monitoring pink water (TNT, RDX, and other nitrobodies) on a continuous, real-time basis. A study was made to identify the interferences in the monitoring system and means for their elimination were developed. Calibration curves were obtained for TNT, RDX, and admixtures. The effect of light on the stability of the solutions was shown to be inconsequential in causing drift in meter reading. Although both TNT and RDX contribute to the absorption at the measuring wavelength, the latter can be measured independently because it precedes the TNT in eluting from the carbon column. The TNT appears only after the RDX concentration has risen to a level that is a signal for replacement of the carbon. The complete design and operation of the monitoring system is shown. With the existing system, at appropriate wavelengths, the sensitivity is suitable for measuring as little as 0.1 ppm of TNT or 1 ppm of RDX. Modification of the system to increase the pathlength and/or to change the measuring wavelength could produce further increases in sensitivity. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1978
- Accession Number
- ADA056242
Entities
People
- Egerton A. Boyce
- Milton Roth
Organizations
- United States Army Armament Research, Development and Engineering Center