Method of detecting pollution in water using sonication

Details Method of detecting pollution in water using sonication Method of detecting pollution in water using sonication

1994-08-22

1996-05-14

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

20415715, 2041582, 588227, 588243, A62D 300, C22B 0500, C02F 01461

Patent

active

055157165

ABSTRACT:
A method for monitoring detecting the presence of pollutants such as chlorinated hydrocarbons in water is provided. In the preferred method, a sample of water is obtained and enclosing or isolating and tested with one or more pollutant sensitive tests. In the preferred method, pH, electrical conductivity and specific ion species sensitive electrode tests are conducted on the sample when testing for the presence of organochlorine compounds. The sample is then sonicated with ultrasound rarefaction and compression waves to cause pollutant decomposition under controlled conditions using a horn probe or cup horn over a length of time at a pulse mode. After sonication, the sample is re-tested, preferably with the same pre-tests of pH, conductivity and electrode measurements. Comparison of the post sonication to pre sonication test results indicates the presence of pollutants, as in the case of the presence of chlorinated hydrocarbons, an increase in the presence of the cl.sup.- ion as indicated by electrode testing, the presence of the pollutant further confirmed by other test results showing a pH decrease and conductivity increase.

REFERENCES:
patent: 3977452 (1976-08-01), Knoevenagel et al.
patent: 4755270 (1988-07-01), Aliotta
patent: 5126020 (1992-06-01), Dames
patent: 5417825 (1995-05-01), Graham et al.

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