Record Display for the EPA National Library CatalogRECORD NUMBER: 24 OF 39
|Main Title||Occurrence and distribution of potentially volatile trace elements in coal /|
|Author||Ruch, R. R. (Rodney R.), 1933-|
|Publisher||Office of Research and Development, U.S. Environmental Protection Agency ; Available from National Technical Information Service,|
|Report Number||68-02-0246; EPA-650/2-74-054; EPA-68-02-0246; EPA-ROAP-21ADD-072|
|Additional Subjects||Coal ; Trace elements ; Chemical analysis ; Chemical composition ; Neutron activation analysis ; Spectrochemical analysis ; Ashes ; Calorific value ; Air pollution ; Transition metals ; Alkaline earth metals ; Sulfur ; Selenium ; Halogens ; Metals ; Boron ; Silicon ; Phosphorus ; Arsenic ; Atomic absorption spectroscopy ; X ray fluorescence analysis ; Ion selective electrodes|
|Collation||[x], 96 p. : ill. ; 28 cm.|
The report gives results of complete chemical analyses of 101 whole coal samples and of 32 separate fractions of four laboratory prepared (washed) coals. Trace elements determined were: Sb, As, Be, B, Br, Cd, Cr, Co, Cu, F, Ga, Ge, Pb, Mn, Mo, Ni, Hg, P, Se, Sn, V, Zn, and Zr. In addition, the following major and minor elements were determined: Al, Ca, Cl, Fe, Mg, K, Si, Na, S, and Ti. Standard coal analyses-proximate, ultimate, heating value, sulfur varieties, and ash--are also reported. Wherever possible, accuracy was evaluated by comparing results obtained by the various methods with results from splits of the same coal samples. Analytical procedures given in detail include: neutron activation, optical emission, atomic absorption, X-ray fluorescence, and ion-selective electrode. Certain techniques were chosen for determining specific elements because they are more accurate, their precision is superior, or they take less time for analysis. Further comparisons, based on analyzing whole coal and its low- and high-temperature ashes, permitted a thorough evaluation of trace-element losses resulting from volatilization during sample preparation.
"EPA contract no. 68-02-0246, program element no. 1AB013, ROAP no. 21ADD-72." "July 1974." "EPA-650/2-74-054." "EPA project officer: William J. Rhodes." Includes bibliographical references.