Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Analysis for mercury in water : a preliminary study of methods /
Author Winter, John A. ; Clements, Harold A.
Other Authors
Author Title of a Work
Clements, Harold A.,
CORP Author National Environmental Research Center, Cincinnati, OH.
Publisher Environmental Protection Agency, Office of Research and Monitoring, National Environmental Research Center,
Year Published 1972
Report Number EPA-R4-72-003
Stock Number PB-287 209
OCLC Number 03808974
ISBN pbk.
Subjects Mercury--Analysis. ; Water--Pollution.
Additional Subjects Water analysis ; Mercury organic compounds ; Mercury inorganic compounds ; Chemical analysis ; Samples ; Water pollution ; Concentration(Composition) ; Accuracy ; Precision ; Performance evaluation ; Tables(Data) ; Laboratory equipment ; Water pollution detection
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA R4-72-003 Headquarters Library/Washington,DC 09/03/2013
NTIS  PB-287 209 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation xv, 58 pages : illustrations ; 28 cm.
The Analytical Quality Control Laboratory of the U.S. Environmental Protection Agency (EPA), conducted a preliminary interlaboratory study on analysis of organic and inorganic mercury by the cold vapor technique. Sample concentrates were prepared at four mercury levels and furnished to the analysts with the known values. Analysts added an aliquot of each concentrate to distilled water and to a surface water of their choice. Single analyses were made on the distilled and on the surface water samples with and without the known increments, using the EPA Method and a method of their choice (Other Method). Recoveries were compared. The accuracy and precision of the methods were noted as were interferences from natural water samples. In this comparative study, the EPA Method was equal or superior to the Other Method in accuracy and precision in 80% of tests. More significantly, in those samples containing organic mercury, the EPA Method was equal or superior to the Other Method. This study indicates that if water samples contain mercury in organic form, a method involving a vigorous digestion step such as that in the EPA Method must be used to obtain a good recovery.
Program Element No. 1H1327. Issued Sept. 1972. EPA R4-72-003 Includes bibliographical references (page 49).