ANNOUNCING
Report for Analytical Chemists
1972 PARTICLE CHARACTERISTICS COURSE
in Table II have been detected. During wastewater surveys, odor thresholds determined by odor panels provide practical identification of odorous wastewater streams. Near the source where wastewater streams are not complex, a practical nose may identify sources and specific compounds which contribute to the odor. In summary, the gross parameters which define pollutional load and characteristics should be supplemented by examination for metals, taste and odor, acute biological impact, and further examined for any suspected materials which might have a chronic or subtle ecological impact. The latter item really is concerned with the fact that "the guard must be up," and successful surveillance is very much dependent upon the recognition that presence of a particular compound constitutes a problem.
THE fTIEfiSUREmENT, SflfTlPUNG & RECOVERY OF PARTICLES FROfTI PROCESS STREflfTlS The Fine Particle Group, Coulter Electronics, Inc., is proud to announce sponsorship of the 5th Particle Characteristics Course. The 1972 Course is under the leadership of Dr. D. C. Freshwater, Head of the Department of Chemical Engineering, University of Technology, Loughborough, England. Within the subject area, lectures will be given on: • Fundamental Characteristics, Properties and Behaviour of Particles • Sampling in Gas and Liquid Streams • Measuring by Scanning and Sedimentation • Surface Area Measurements • Gas and Liquid Filtration Methods where and w h e n . . . Newark, New Jersey on September 1 1 , 12, 13 Chicago, Illinois on September 18, 19, 20 For complete information on curriculum, registration, accommodations write:
FINE PARTICLE GROUP COULTER ELECTRONICS, INC.
Automated Water Quality Monitoring
In the near future when water quality objectives and enforcement demand good water quality that is reliably maintained, it will be necessary to ha\*e "real-time" information continually. In most situations it is impractical to obtain such information manually, owing to the "real-time" requirement or to the cost involved. Therefore, monitoring instrumentation must be utilized. Monitoring data may have adequate utility if obtained continually rather than continuously ; that is, an automated analytical system may deliver a result every few seconds or minutes, and sequential interpretation of the result can indicate all occurrences of interest. "Real time" should be considered as a time frame which encompasses the, instant of undesirable occurrence through an ensuing period of time when successful correction action is practical. Visualize wastewater discharged to a sewer. At a point down the sewer, a sample is taken into a transfer line introduced into an automated analytical instrument analyzer. The results are interpreted and acted upon. The elapsed time from problem to correction is the sum of:
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throwing away counting vials contaminated by radioactivity!
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CIRCLE 27 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 44, NO. 8, JULY 1972
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