ANALYTICAL CHEMISTRY
CONTENTS · JUNE 1958
Report for Analytical Chemists Information concerning current trends in laboratory instrumentation for analysis is progressing very rapidly. While instrumentation specialists are cognizant of these changes, many analytical chemists are not fully familiar with them. The first of a two-part series d e scribes the characteristics and principles of construction LOWPB PRtÇES F O R ISO I OHES
N e w s Section THIS MONTH'S COVER
Markedly
19 A
lower
costs
and
ready
Analytical chemists at the highly successful ACS meeting at San Francisco heard many reports on significant new developments. Several other meetings are scheduled in the early summer . . . . 31 A
availability of a wide range of radioisotopes p r o v i d e t h e a n a l y t i c a l chemist with a p o w e r f u l f o o l . ticular
One par-
a p p l i c a t i o n , tritium t r a c i n g , is
b e i n g used f o r a v a r i e t y o f a p p l i c a tions.
New
instrumentation
which
takes a d v a n t a g e o f the p r o p e r t i e s o f tritium
is also
developing.
Analyst's Column The role of the scientist in politics, the question of whether gas chromatograms should be recorded right to left or vice versa, and the question of the supply of selenium appear in the Analyst's Column. 53 A
The In-
strumentation column sets f o r t h a d d i t i o n a l details (see p a g e 6 5 A ) .
Laboratory of the Month American Cyanamid's Research Center at Bound Brook, N. J., provides ample facilities for expanded research activities
59 A
Instrumentation In addition to a report on tritium tracer technology, the instrumentation column discusses recording differential thermobalances . . . Volume 3 0 , N o . 6 Issued M a y 2 1 , 1 9 5 8 ©
COPYRIGHT
1958
Analyst's Calendar
. .
N e w Books
65 A
40 A
Manufacturers'Literature.
82 A
50 A
Product Capsules . . . .
93 A
N e w Products
73A
_ , . . . Readers Information Service
89 A
b y The A m e r i c a n Chemical Society
Briefs
N e w Chemicals
9
. . . .
Editorial G U I D E FOR A U T H O R S , published in December 1957 issue, page 1932, gives copy requirements t o be observed in preparing manuscripts for consideration. Manuscript ( 2 copies) should be submitted t o the Editor, 1155 Sixteenth St., N . W . , W a s h i n g t o n 6,D.C. T h e American Chemical Society assumes n o responsibility for t h e statements and opinions advanced b y contributors t o i t s publications. Views expressed i n t h e editorial are those of t h e editors and d o n o t necessarily represent t h e official position of t h e American Chemical Society. 1958 Subscription Rates 1 yr. 1 yr. 3 yr. Members, foreign and domestic $ 4 . 0 0 $ 7 . 0 0 $10.00 Nonmembers, domestic and Canada 5.00 9.00 12.00 Nonmembers, foreign except Canada I5.OO 27.50 40.00 Postage t o countries n o t in t h e Pan-American Union $1.50 yearly; Canadian postage $0.50 yearly. Single copies: current issues, $ 1 . 5 0 ( A p r i l , issued i n t w o parts, priced a t $2.00). Claims for missing numbers w i l l n o t be allowed if received more t h a n 60 days from date of mailing plus time normally required for postal delivery of journal and claim. N o claims allowed for subscribers i n Central E u r o p e , Asia, o r the Pacific Islands o t h e r t h a n H a w a i i , o r because of failure t o notify the Circulation Department of a change of address, o r because copy i s " m i s s i n g from files." Published m o n t h l y b y t h e American Chemical Society, from 20th a n d N o r t h a m p t o n S t s . , Easton, P a . Executive Offices, Editorial Headquarters, and Circulation D e p a r t m e n t , 1155 Sixteenth S t . , N . W . , W a s h i n g t o n 6 , D . C. Advertising Office: 430 Park A v e . , N e w Y o r k 22, Ν . Y . Branch Editorial Office: 36 S o . Wabash A v e . , Chicago 3 , 111.; 718 Melrose Bldg., H o u s t o n 2 , T e x . ; 2 P a r k Ave., N e w Y o r k , 6 , Ν . Υ . ; 703 M e chanics' I n s t i t u t e B l d g . , 57 Post S t . , San Francisco 4, Calif.; Bush House, A l d w y c h , London. Second class mail privileges authorized a t Easton, P a . C H A N G E O F ADDRESS: Notify Circulation Department, American Chemical Society, 1155 Sixteenth S t . , N . W . , W a s h i n g t o n 6, D . C. Such notification should include b o t h old and n e w addresses and postal zone number, if any. T h e American Chemical Society also publishes: Industrial and Engineering Chtmistry, Chemical and Engineering News, Chemical Abstracts Service, Journal of American Chemical Society, The Journal of Physi cal Chemistry, Journal of Agricultural and Food Chemistry and The Journal of Organic Chtmistry. Rates on request.
4 A
•
ANALYTICAL
CHEMISTRY
A
81 A 1019
Scientific Communications Amino Acid Analysis by Reactor-Gas Chromatography
1156
Albert Zlatkis a n d J . F. Oro
Programmed Temperature Gas Chromatography
1157
Stephen D a l Nogare a n d C . E. Bennett
Benzene Extraction of Antimony Iodide Use of Perchloryl Fluoride in Flame Photometry
R. W. Ramette 1 1 5 8 1160
G . E. Schmauch a n d E. J . Serfass
Crystallographic Data Germanium Bismuthate, GesBi4Oi2
André Durif 1 1 6 1
Infrared Quantitative Analysis Data Nos. 4 6 - 4 9
1162
Aids for the Analyst High Temperature Thermal Conductivity Cell
1163
H. R. Felton a n d A . A . Buehler
Small-Volume Five-Centimeter Absorption Cell
1163
Gerald Goldberg, A . S. M e y e r , Jr., a n d J . C. White
Urea Phosphate Reagent as Specific Test for Heptoses on Paper Chromatograms F.L.Greene 1 1 6 4