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)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-177139 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
9p |
Abstract |
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. |