INDUSTRIAL APPLICATIONS OF RADIOISOTOPES WITH THE TRI-CARB SPECTROMETER
Physical Properties of Chemical Compounds
Tracer Research involving industrial organic compounds — oil and gasoline, solvents, phar· maceuticals, plastics. G r o u n d W a t e r S t u d i e s —large scale water distribution problems, such as pollution and waste disposal. L a r g e Scale T a g g i n g of plant operation with safety and economy of radioactive materials.
I
Tri-Carb Liquid Scintillation Counting has opened many new possibilities for industrial applications of radioisotopes by making low level counting of soft beta emitters a simple routine proce dure. Consider the following facts to see how this method might be applied to your own work. Every single organic compound can be uniquely identified with the radio active isotopes of hydrogen and carbon. These isotopes . . . Tritium and Carbon14 . . . are readily available and simple to use. They emit very soft beta radi ation which cannot penetrate even a thin glass container. Other common soft beta emitters that are now being successfully used in industrial applica tions are Sulphur-35 and Calcium-45. Although the Tri-Carb Liquid Scintil lation Spectrometer is sensitive enough to be used for natural radiocarbon dat ing of preserved organic materials that are over 40,000 years old, it is still simple enough to be used for counting hundreds of ordinary samples per day. Obviously the possibilities for practical industrial applications of radioactive tracers are greatly enhanced now that measuring equipment with this inher ent sensitivity is available for routine use. Costs, safety, etc., cease to be limiting factors, and even the labeling of consumer products becomes a prac tical consideration. For additional general information re quest Bulletin 314. For spe cific information on your requirements, provide appli cation details.
INSTRUMENT P. O . Box 4 2 8
»
in
Chemistry
Series
e d i t e d b y t h e staff of A systematic tabular presentation of accu rate data on the physical properties of 511 organic cyclic compounds compiled by R. R. Dreisbach of the Dow Chemical Co. These comprehensive and basic data were deter mined for specially prepared, high purity compounds. In addition to the precisely measured properties the author has cal culated new values for many constants based upon his new experimental values.
order from: Special P u b l i c a t i o n s D e p a r t m e n t A m e r i c a n C h e m i c a l Society 1155 Sixteenth Street, N. W. Washington 6, D. C.
Industrial
and
Engineering Chemistry
523 pages plus cloth
index
bound—
$5.85 per
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NEW RADIOACTIVE CHEMICALS Specific Activity Compound in mc per m/mole Barium C a r b o n a t e C " 5.0-15.0 t-Butyl Alcohol-C" Ethyl A c e t a t e - 2 - O 1.0 2,4-Dichlorophenoxyacetic Acid-2-O» L4-38 0.3 Malonic A c i d - 2 - O L4-31 Salicylic Acid Carboxyl-C" L4-32 Oleic A c i d - l - O 0.4 L4-33 Fumaric Acid-2-C» Sodium O c t a n o a t e - l - C " L4-34 1.0 3-Indole Acetic Acid-a-C" L4-35 Sodium n-Butyrate-1-C" L4-36 1.0 Phenylacetic Acid Carboxyl-C" L4-37 1.0 p-Propyltoluene, Ring Labeled L6-7 0.04 n-Pentane-3-C" L8-4 0.5 3-Amino-l,2,4-Triazole-5-C" Lll-1 1 "$10.00 handling charge on this compound. Cat. No. Ll-9 L3-23 L4-30 L4-100
Min. Order in mc
0.5 1.0
Price per mc
$ 28.00 On Request 295.00
0.5 0.5 0.5 0.5
On Request 325.00 On Request 630.00 On Request 180.00 On Request 180.00 180.00 800.00 " 600.00
0.5
275.00
0.5 0.5 0.5
For your free copy of Tracerlab's Chemical Catalog 2nd Edition. write: Technical Publication Dept.
RADIOACTIVE CHEMICALS
Tracerlab
fracerlab KCICKCTJ,
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Packard Department
N u m b e r 15 i n Advances
COMPANY D
LAGRANGE,
ILLINOIS
Circle No. 85 Λ-1 on Readers' Service Card, page 75 A
For further information, circle number 85 A-2 on Readers' Service Card, page 75 A VOL. 2 9 , N O . 3, MARCH
1957
·
85
A
