JEQ Grow Your Career With ASA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in J Environ Qual 6:421-426 (1977)
© 1977 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Doty, W. T.
Right arrow Articles by Shipp, R. F.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Doty, W. T.
Right arrow Articles by Shipp, R. F.
Agricola
Right arrow Articles by Doty, W. T.
Right arrow Articles by Shipp, R. F.

Chemical Monitoring of Sewage Sludge in Pennsylvania1

W. T. Doty, D. E. Baker and R. F. Shipp2

ABSTRACT

Sewage sludge samples were collected biweekly and analyzed for several components to determine the sampling procedures which should be required for the routine chemical monitoring of sewage sludge produced by a given treatment plant. While the composition varied significantly over time for every component and every plant, the standard deviation, expressed as a percentage of the mean for each treatment plant, indicated that two-thirds of the values would be within the range of the true average value plus or minus 20 to 50%.

Analyses for all samples collected in Pennsylvania, including those analyzed as a part of a service program, indicated that without chemical analysis the composition with respect to N, P, and K varied too much to establish an accurate prediction of the fertilizer value of unanalyzed sludge. In addition, the concentrations of the essential but phytotoxic elements, especially Zn and Cu, as well as trace elements harmful to the food chain, varied greatly among the treatment plants studied.

Key Words: heavy metals • sludge • chemical analysis • cadmium • zinc • copper • lead • chromium

NOTES

1 Contribution of the Pennsylvania Agric. Exp. Stn., University Park, PA 16802. Authorized for publication on 3 Nov. 1976 as Paper no. 5195 in the J. Series.

2 Research Assistant, Professor of Soil Chemistry, and Associate Professor of Agronomy Extension, respectively.

Received for publication November 15, 1976.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 1977 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.