Main Title |
Improvement and evaluation of methods for sulfate analysis part II : final report / |
Author |
Appel, B. R.
|
Other Authors |
|
CORP Author |
California Dept. of Health Services, Berkeley. Air and Industrial Hygiene Lab. Section.;Environmental Monitoring Systems Lab., Research Triangle Park, NC. Quality Assurance Div. |
Publisher |
Environmental Monitoring Systems Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
Year Published |
1980 |
Report Number |
EPA-600/4-80-024; EPA-R-805447-1 |
Stock Number |
PB80-185556 |
OCLC Number |
30820821 |
Additional Subjects |
Gas analysis ;
Sulfates ;
Chemical analysis ;
Extraction ;
Samples ;
Air filters ;
Chromatography ;
Barium sulfates ;
Air pollution ;
Comparison ;
X ray fluorescence ;
X ray analysis ;
Performance evaluation ;
Air pollution detection ;
Turbidimetric analysis ;
Ion chromatography ;
SulfaVer
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 600-4-80-024 |
c.1 |
Headquarters Library/Washington,DC |
04/30/2014 |
EKBD |
EPA-600/4-80-024 |
|
Research Triangle Park Library/RTP, NC |
07/23/1994 |
ELBD ARCHIVE |
EPA 600-4-80-024 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD |
EPA 600-4-80-024 |
|
AWBERC Library/Cincinnati,OH |
01/16/1998 |
ESAD |
EPA 600-4-80-024 |
|
Region 10 Library/Seattle,WA |
09/27/2017 |
NTIS |
PB80-185556 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
viii, 94 pages : charts ; 28 cm |
Abstract |
Methods for extraction of sulfate from glass-fiber hi-vol and Teflon lo-vol samples were evaluated. Efficiencies were found to vary with sampling location up to 20%. Mechanical shaking in water at room temperature was significantly more efficient than ultrasonic or reflux techniques with hi-vol samples. While Teflon filters are not wet by water, pre-wetting of filters with methanol did not significantly enhance sulfate extraction. A turbidimetric sulfate method using SulfaVer IV was evaluated for ruggedness, precision and intermethod agreement. Its precision was at least equal to that of a conventional turbidimetric method, but its accuracy was somewhat less, especially at lower sulfate levels. The Dionex Model 10 ion chromatograph was evaluated for low level sulfate analysis using both a sample preconcentrator and large (0.5 ml) sample loop. The latter was the preferred technique for samples = or < 20 microgram/ml. Accuracy was within 15% in the range 2 to 20 microgram/ml with a median C.V. of 6.5% for 24 atmospheric samples collected with dichotomous samplers. Use of a sample pre-concentrator permitted analysis of samples containing < 1 microgram/ml sulfate. |
Notes |
"Project Officer John C. Puzak, Quality Assurance Division"--T.p. "Air and Industrial Hygiene Laboratory Section, California Department of Health Services, EPA Grant No. 805-447-1"--T.p. "April 1980"--Cover. |
Place Published |
Research Triangle Park, N.C. |
Supplementary Notes |
See also Part 1, PB-298 148. |
Access Notes |
Also available on the Internet. Viewed: 10/31/2005. |
Corporate Au Added Ent |
United States. Environmental Protection Agency. Quality Assurance Division.; Environmental Monitoring Systems Laboratory (Research Triangle Park, N.C.). Office of Research and Development.; California. Air and Industrial Hygiene Laboratory. |
PUB Date Free Form |
1980 |
NTIS Prices |
PC A06/MF A01 |
BIB Level |
m |
Medium |
unmediated |
Content |
text |
Carrier |
volume |
Cataloging Source |
RDA |
OCLC Time Stamp |
20170919052528 |
Language |
eng |
Origin |
OCLC |
Type |
MERGE |
OCLC Rec Leader |
01979cam 2200457Ki 45010 |