Use of Ultrasound in Monitoring Chemical Contamination in Water

摘要

The U.S. Environmental Protection Agency (EPA) has been examining the potentialfor combining sonication with other technologies for monitoring specific classes of organic pollutants in water. Pollutants are decomposed into ions which can be detected using known electrochemical techniques. An increase in concentration of the target ion after sonication indicates the presence of the pollutant. The paper presents additional results on the use of sonochemistry in monitoring carbon tetrachloride, chloroform, and trichloroethylene (TCE) in water. Relationships were examined for changes in chloride ion and pH upon sonication versus concentration of the individual organochlorine pollutants. Another issue deals with the effect of various humic acids (at different concentrations) on changes in Cl-pH, and conductivity, as a result of sonicating solutions of the pollutants. Linear relationships with excellent correlation coefficients were