Physical Sciences and Mathematics Commons^™

Analysis Of Lead In Freshwater Clams From The Embarrass River, Coles County, Illinois, Kwaku D. Nantwi

Masters Theses

Twenty-two freshwater clams of various genera were collected by hand from two sites on the Embarrass River located at 240 meters and 400 meters downstream from the dam at Lake Charleston and at depths of .4 and 2.5 meters. Ten grams of gill tissue from each clam was prepared by furnace ashing, dissolved in 30 ml. of acid mixture and analyzed for lead content using an atomic absorption spectrometer. The average lead concentration for the clams was 3.60 ppm, while that of the ambient water was 0.33 ppm indicating that these local bivalves show a lead biocentration of about ten …

Use Of Fishes And Macroinvertebrates In The Assessment Of Water Quality In An Illinois Stream Receiving Sewage Effluents, Robert George Mosher

Masters Theses

Kickapoo Creek is a medium sized, warm water stream located in the central part of Coles County, Illinois. The creek is the receiving stream for the sewage effluent of the cities of Mattoon and Charleston which recently began treating sewage to the tertiary level. In 1967-70, the fish population of the creek was intensively surveyed at a time when a less advanced method of sewage treatment was employed. This study provided a baseline of information from which a portion of the present study is founded.

Fish were collected from 5 sampling stations utilizing capture techniques comparable with those used in …