| Main Title |
Determination of Metals in Solid Samples by Complexation: Supercritical Fluid Extraction and Gas Chromatography. Atomic Emission Detection. |
| Author |
Liu, Y. ;
Lopez-Avila, V. ;
Alcaraz, M. ;
Beckert, W. F. ;
Heithmar, E. M. ;
|
| CORP Author |
Midwest Research Inst., Mountain View, CA. California Operations.;Environmental Monitoring Systems Lab., Las Vegas, NV. |
| Publisher |
Aug 93 |
| Year Published |
1993 |
| Report Number |
EPA-68-C1-0029; EPA/600/J-94/288; |
| Stock Number |
PB94-191145 |
| Additional Subjects |
Chromatography ;
Extraction ;
Metal complexes ;
Ions ;
Inorganic compounds ;
Copper ;
Cobalt ;
Cadmium ;
Zinc ;
Complex compounds ;
Gas chromatography ;
Soil pollution ;
Remedial action ;
Toxic substances ;
Reprints ;
SFE(Supercritical fluid extraction) ;
Supercritical fluid extraction ;
In situ analysis ;
FDDC(Bis(trifluoroethyl)dithiocarbamate)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB94-191145 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
8p |
| Abstract |
Complexation followed by Supercritical fluid extraction (SFE) has been investigated for the extraction of Cu(2+), Co(2+), and Zn(2+) ions from solid samples. Lithium bis(trifluoroethyl)dithiocarbamate (FDDC) was used as the complexing agent in the study. The metal-FDDC complexes in the SFE extracts were determined by gas chromatography (GC) with atomic emission detection. The recoveries of Cu(2+), Co(2+), Cd(2+), and Zn(2+) ions from filter paper, sand, and silica gel ranged from 70 to 100 percent. Relatively high concentrations of complexed Cu, Co, Cd, and Zn found in system blanks obtained with a stainless steel SFE system prompted the authors to modify the apparatus by using nonmetalic polyetheretherketone (PEEK) components. |
| Supplementary Notes |
Pub. in Journal of Chromatographic Science, v31 p310-316 August 1993. Sponsored by Environmental Monitoring Systems Lab., Las Vegas, NV. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Determination of Metals in Solid Samples by Complexation: Supercritical Fluid Extraction and Gas Chromatography. Atomic Emission Detection. |
| Category Codes |
99A; 68 |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/07 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
424431225 |
| Origin |
NTIS |
| Type |
CAT |
