CONTRIBUTED ARTICLES Scientific Communications
Film Thickness Determination Counter. H. R. Lukens, Jr
A New Detector for Gaseous Components Using Semiconductive T h i n Films. TETSURO SEIYAMA, A K I O K A T O , K I Y O S H I FUJIISHI, AND MASANORI NAGATANI
with
a
Scintillation 1 396
1502 Determination of Submicrogram Quantities of Alumi num in Natural Diamonds by Neutron Activation Analysis. E. G Lightowlers 1398
A Mass Spectrometer for Isotope Ratio Analyses. A. O. Nier, W. R. Eckelmann, and R. A. Lupton 1358
Spectrophotometry Catalytic Determination of Small Amounts of Rhenium in Mineralized Rocks and Molybdenite. F. O. Simon and F. S. Grimaldi . . . . .
1361
Liquid Scintillation Method for Measuring Low Level Radioactivity of Aqueous Solutions. Determina tion of Enriched Uranium in Urine. Lester Levin . . .
1402
Solvent Extraction Method for Radiocerium. Marsh, W. J. Maeck, G. I . Booman, and J. E. Rein
1406
s. F.
Comparative Study on Determination of Oxygen in Vanadium Metal. V. A. Fassel, W. E. Dallmann, Rodney Skogerboe, and V. M. Horrigan . . . .
1364
Determination of Radiomanganese in Fission ProductCorrosion Product Mixtures. S. F. Marsh, W. J. Maeck, and J. E. Rein 1408
Determination of Phosphate in Presence of Silicates by the Molybdenum Blue Method. C. Y. Shen and D. R. Dyroff
1 367
Separation of Iron by Reversed-Phase Chromatogra phy. J. S. Fritz and C. Ε Hedrick
1411
Gas Chromatography of the n-Butyl-N-Trifluoroacetyl Derivatives of Amino Acids. Claire Zomzely, Gino Marco, and Edward Emery . . . .
1414
Operation of the Quantitative and Qualitative Ioni zation Detector and Its Application for Gas Chro matographic Studies. P. F. Varadi and Kitty Ettre . . .
1417
Optical Emission Spectrographs Method for Analysis of Microgram Deposits on Electron Tube Parts. A . M . Liebman 1370
Determination of Traces of Cadmium in Zinc-Rich Materials. J. R. Knapp, R. E. Van Aman, and J. H. Kanzelmeyer
1374
Simultaneous Spectrophotometric Determination of Cobalt and Nickel with 2,3-Quinoxalinedithiol. R. W.Burke and J. H.Yoe 1378
Dinitrosoresorcinol as a Microanalytical Reagent for the Estimation o f Iron(ll). Hassan El Khadem and Saad Eldin Zayan
Anodic Dissolution and Analysis of Ruthenium Alloyed with Molybdenum and Tungsten, τ. Μ. Cotton and A. A. Woolf
Examination of Distribution of Substituents in Partially Methylated Cellulose by Gas Liquid Partition Chromatography. W. B. Neely, Julie Nott, and C. B. Roberts 1423
1382 A Complete Separation of a Mixture of Iron(lll), Cobalt(ll), Molybdenum(VI), Aluminum(lll), and Nickel (II) by Ion Exchange Chromatography. Carl Michaelis, N. S. Tarlano, Julianna Clune, and Robert Yolles
1 425
1385
Anion Exchange Separation of Thorium Using Nitric Acid. J. S. Fritz and Β. Β. Garralda 1387
Microdetermination of Sulfur by Hydrogénation and Gas Chromatography. I. Okuno,J. C.Morris, and W.E. Haines 1427
Spectrophotometric Determination of Trace Quanti ties of Alpha-Dicarbonyl— and Quinone-Type Con jugated Dicarbonyl Compounds. D. P. Johnson, F. E. Critehfleld, and J. E. Ruch 1389
Quantitative Reproducibility of a Programmed Temperature Gas Chromatographic System with Constant Pressure Drop Using Packed and Golay Columns. L. S. Ettre and F. J. Kabot 1431
EDTA as Masking Agent in Selective Spectrophoto metric Determination of Copper with Triethylenetetramine. An Interpretation of Masking, κ. L. Cheng
Simultaneous Carbon-Hydrogen-Nitrogen Determination by Gas Chromatography, c. F. Nightingale andJ.M.Walker 1435
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VOL. 34, NO. 11, OCTOBER 1902 ·
3 A
CONTRIBUTED ARTICLES Electrochemical phosphorous
Determination of Organo Compounds. G. G. Guilbault, D. N.
Kramer, and P. L. Cannon, Jr
Study o f the Titration o f Selected Substituted Phenylu r e a s as A c i d s in n - B u t y l a m i n e . Μ. ι . ciuett
1491
Relationship b e t w e e n p K b ( H 2 0 ) o f O r g a n i c C o m p o u n d s a n d Ei/2 V a l u e s in S e v e r a l N o n a q u e o u s Solvents. L. G. Charter, and L. E. Harris
1 495
1437
P o l a r o g r a p h i c Reduction o f Epimeric a - H a l o k e t o Steroids a n d Their V i n y l o g s . Peter Kabasakalian and James McGloflen
1440 Corrections
Simultaneous S p e c t r o p h o t o m e t r i c D e t e r m i n a t i o n o f Fructose a n d G l u c o s e M i x t u r e s b y D i f f e r e n t i a l Re a c t i o n Rates. A p p l i c a t i o n t o B l o o d S e r u m A n a l y sis. L.J. Papa, H. B.Mark, Jr., and C. N. Reilley
T h e o r y o f Diffusion Limited C h a r g e - T r a n s f e r Proc esses in E l e c t r o a n a l y t i c a l Techniques. W. R. Reinmuth
Use o f Electrically Excited O x y g e n f o r t h e Low T e m p e r a t u r e D e c o m p o s i t i o n o f O r g a n i c Substances. C.E.GIeit and W.D.Holland
P o l a r o g r a p h i c Investigations in t h e A m m o n i a t e o f Sodium Iodide. D.E. Sellers and G.W.Leonard, Jr. . . .
Spectrophotometric Determination of Formaldehyde a n d Formaldehyde-Releasing Compounds with Chromotropic Acid, 6-Amino-l-naphthol-3-sulfonic A c i d (J A c i d ) , a n d 6 - A n i l i n o - l - n a p t h o l - 3 - s u l f o n i c A c i d (Phenyl J A c i d ) . Eugene Sawicki, T. R. Hauser, and Sylvester McPherson
Simultaneous D e t e r m i n a t i o n o f M o r p h i n e , C o d e i n e , a n d P o r p h y r o x i n e in O p i u m b y I n f r a r e d a n d V i s i ble Spectrometry. Klaus Genest and C. G. Farmilo. . .
1443
1384, 1442
Correspondence D e t e r m i n a t i o n o f Benzoic A c i d in Phthalic d r i d e b y G a s Liquid C h r o m a t o g r a p h y . Moore and Siegfried Meinstein
Anhy C. E. 1503
1446 I n t e r a c t i o n o f A m m o n i u m F l u o r i d e Mulls a n d D e p o s i t e d Films w i t h S o d i u m C h l o r i d e Plates. O. S. Crocket and R. A. Grossman
1505
A G e n e r a l M i c r o q u a l i t a t i v e Technique. Combina t i o n o f Ring O v e n , C a t i o n E x c h a n g e P a p e r , a n d Emission S p e c t r o g r a p h . J. B.Mooney
1506
R a p i d D e t e r m i n a t i o n o f Aluminum in M i n e r a l s a n d Rocks b y T h e r m a l N e u t r o n A c t i v a t i o n A n a l y s i s . D. F. Rhodes and W. E. Mott
1 507
Revised S a m p l i n g P r o c e d u r e f o r D e t e r m i n a t i o n o f Dissolved G a s e s in Solution b y G a s C h r o m a t o g raphy. J. W. Swinnerton, V. J. Linnenbom, and C. H. Cheek
1 509
W a t e r Determination b y N e a r Infrared Spectro photometry. R. L. Meeker, F. E. Critchfield, and Ε. Τ. Bishop
1510
Indirect P r o c e d u r e f o r the D e t e r m i n a t i o n o f Tin(ll) b y P o t e n t i o m e t r i c T i t r a t i o n . R. W. Collins and W. H. Nebergall
1511
A S i m p l i f i e d Technique f o r Analysis o f B i n a r y M i x tures b y S e c o n d - O r d e r D i f f e r e n t i a l Reaction Rates. L. J. Papa, H. B. Mark, Jr., and C. N. R e i l l e y . . .
1513
1454
1457
1460
1404
Fluorometric M i c r o d e t e r m i n a t i o n o f A l p h a - K e t o Acids. J. E. Spikner and J. C. Towne
1468
Analysis a n d Comparison o f Ultraviolet Spectro p h o t o m e t r i c Curves o f S t e r o i d s w i t h A p p l i c a tion o f the A n a l o g Computer. E. R. Garrett, J. L. Johnson, and C. D. A l w a y
N e g a t i v e Ion G a s A n a l y s i s T e c h n i q u e , E.J.Merritt
1472
v . N. Smith and 1476 Aids for the A n a l y s t
Titration Characteristics o f Q u a t e r n a r y T i t r a n t s . Influence o f C a t i o n S t r u c t u r e .
Ammonium G. A. Harlow
1482
A S i m p l e D e v i c e f o r Q u a l i t a t i v e Functional G r o u p Analysis o f G a s C h r o m a t o g r a p h i c Effluents. Benito Casu and Luigi Cavallotti
Factors A f f e c t i n g S t a b i l i t y o f N o n a q u e o u s n a r y A m m o n i u m Titrants. G. A. Harlow 4A
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ANALYTICAL CHEMISTRY
1514
Quater 1487
An Improved Digital Readout M e t h o d .
Ralph Eno
1516
