Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Sources of Error in Analysis of Municipal Sludges and Sludge-Amended-Soils for Di(2-ethylhexyl) Phthalate.
Author Eiceman, G. A. ; Gardea-Torresdey, J. L. ; O'Connor, G. A. ; Urquhart, N. S. ;
CORP Author New Mexico State Univ., Las Cruces.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher c1989
Year Published 1989
Report Number EPA-R812687-02; EPA/600/J-89/515;
Stock Number PB91-177139
Additional Subjects Sewage sludge ; Chemical analysis ; Error analysis ; Land pollution ; Waste disposal ; Gas chromatography ; Mass spectroscopy ; Ground disposal ; Soil contamination ; Path of pollutants ; Plants(Botany) ; Phthalates ; Sample preparation ; Reprints ; Phthalic acid/di(ethylhexyl-ester)
Library Call Number Additional Info Location Last
NTIS  PB91-177139 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/04/1991
Collation 9p
Rapid quantitative determination of di-(2-ethylhexyl) phthalate (DEHP) in municipal sludge is described for capillary gas chromatography/mass spectrometry (GC/MS) using selected ion monitoring with isotope dilution techniques. Propagation of error through a four-step technique is measured as an increase in variance with each additional step. Stepwise accumulated variation (as a percentage of total error) was GC/MS analysis with data reduction, 3%; analyst (sample preparation), 8% heterogeneity of sludge, 30%; heterogeneity in sludge-amended soil, 77%; and errors between planters, 100%. The relative standard deviation (RSD) associated with analysis of sludge alone was 16% at 51 mg/kg DEHP. Analysis precision was dependent on sample size and DEHP concentration. The RSD for a 13 mg/kg DEHP loading in soil/sludge mixtures for a greenhouse study was 26.5%. Detection limits for DEHP in sludges with rapid screening procedures were fixed by interfering extractable matrices.