ANALYTICAL CHEMISTRY
Ν EWS Monday Afternoon, September 10 2 P.M. to 4:30 P.M. SYMPOSIUM O N THIN LAYER CHROMATOGRAPHY E. G. Wollish, Presiding
142nd ACS National Meeting, Analytical Division The 142nd National Meeting, ACS, will take place September 9 to 14 at Atlantic City, N . J. AH sessions will be held at Convention Hall, Room A. The Divisional Dinner will be held Wednesday evening, September 12, at the Madison Hotel solarium. The Divisional Business Meeting will be held on Thursday, September 13, at 11:15 A.M. at Convention Hall, in Room A.
2:00 Thin Layer Chromatography of Polar Compounds. H. K. Mangold and E. G. Woolish, The Hormel Institute, University of Minnesota, Austin, Minn. 2:30 The Application of Thin Layer Chromatography to the Structure Elucidation of a Glycoside. J. M. Bobbitt, D. W. Spiggle, and S. Mahboob, University of Connecticut, Storrs, Conn. 3:00 Quantitative Thin Layer Chromatography. O. S. Privett, The Hormel Institute, University of Minnesota, Austin, Minn. 3:30 Preparative Thin Layer Chromatography. B. P. Korzun, L. Dorfman, and S. Brody, CIBA Pharmaceutical Co., Summit, N. J. 4:00 Thin Layer Chromatography as Applied to the Citrus Essential Oils. W. L. Stanley, U. S. Department of Agri culture, Albany, Calif. 4:30 Thin Layer Chromatography of Glucose, Maltose, and Maltodextrins. C. Edwin Weill and Paul Hanke, Rutgers, The State University, Newark, N . J.
Tuesday Morning, September 11 9 A.M. to 11 A.M. SYMPOSIUM O N USE OF DIFFERENTIAL REACTION RATES TO ANALYZE O R G A N I C MIXTURES
PROGRAM
Sidney Siggia, Presiding
DIVISION OF ANALYTICAL CHEMISTRY John Mitchell, Jr.,
Donald H. Wilkins,
Chairman
Secretary-Treasurer Monday Morning, September 10 9:00 A.M. to 11:35 A.M. GENERAL
9:00 Introductory Remarks, Sidney Siggia. 9:10 General Principles of Kinetic Analyses. G. S. Ham mond, California Institute of Technology, Pasadena, Calif. 10:05 Use of Second Order Reaction Kinetics to Resolve Mixtures of Organic Materials Containing the Same Func tional Group. Sidney Siggia and J. G. Hanna, Olin Mathieson Chemical Corp., New Haven, Conn. 11:00 Analysis of Mixtures by Differential Reaction Rates. A General Approach to First and Second Order Kinetics. C. N . Reilley, L. J. Papa, H. B. Mark, Jr., and R. G. Garmon, University of North Carolina, Chapel Hill, N. C.
E. C. Dunlop, Presiding
9:00 Spectrophotofluorescence of Some Aromatic Aldehydes and Their Acetals. E. P. Crowell and C. J. Varsel, Philip Morris Research Center, Richmond, Va. 9:20 The Polarography of Steroidal Alpha Haloketones. Peter Kabasakalian and James McGlotten, Schering Corp., Bloomfield, N . J. 9:35 A,Combustion Method for the Determination of Total Sulfur in Tissues. A. W. Coates and F. L. Estes, University of Texas, Galveston, Tex. 9:50 A Bioelectrochemical Determination of Organophosphorus Compounds. G. G. Guilbault, D. N. Kramer, and P. L. Cannon, Jr., Army Chemical Center, Md. 10:20 Determination of Available Lysine in Plant Proteins. S. R. Rao, F. L. Carter, and V. L. Frampton, U. S. Depart ment of Agriculture, New Orleans, La. 10:35 Determination of the Molecular Weight of Polyethylenes with an Oscillating Ebulliometer. J. E. Barney II, Celanese Corporation of America, Summit, N . J., and W. A. Pavelich, Spencer Chemical Co., Merriam, Kan. 10:50 Determination of Water by Near Infrared Spectro photometry. F. E. Critchfield, R. L. Meeker, and Ε. Τ. Bishop, Union Carbide Chemicals Co., South Charleston, W. Va. 11:05 Indirect Spectrophotometric Determination of Traces of Bromide in. Water. M. J. Fishman and M. W. Skougstad, U. S. Geological Survey, Denver, Colo. 11:20 Quantitative Thin Layer Chromatography. I. Tech nique and Application to the Assay of a Steroid: 6-Chloro17-a-hydroxpregna-4, 6-diene-3, 20-dione Acetate. H. L. Bird, Jr., H. F. Brickley, J. P. Comer, P. E. Hartsaw, and M. L. Johnson, Eli Lilly and Co., Indianapolis, Ind. 11:35 Chromatography of the Mixed Neomycin Sulfates on Carbon Thin Layer Plates; T. F. Brodasky, The Upjohn Co., Kalamazoo, Mich.
Tuesday Afternoon, September 11 2:00 P.M. to 4:45 P.M. GENERAL Arthur F. Findeis, Presiding
2:00 Gas Chromatographic Detection Systems Using Geiger and Proportional Counters. Arthur Findeis, University of Alabama, University, Ala. 2:15 Cyclodextrin Esters as Stationary Phases in GLC. H. Schlenk, J. L. Gellerman, and D. M. Sand, The Hormel Institute, University of Minnesota, Austin, Minn. 2:30 A New Radioactive Gas Chromatographic Detector for the Identification of Strong Oxidants. B. J. Gudzinowicz and W. R. Smith, Monsanto Research Corp., Everett, Mass. 2:45 Detection of Gases through Minority Carrier Lifetime Determinations. J. H. Chaudet, M. R. Kagan, and F. E. Briden, Melpar, Inc., Falls Church, Va. 3:15 The Determination of Trace Amounts of Chromium by Gas Chromatography. W. W. Brandt, Kansas State Uni versity, Manhattan, Kan., and J. E. Heveran, Purdue Uni versity, Lafayette, Ind. 3:25 Pyrolysis—Gas Chromatography Technique II. The Effect of Temperature on the Thermal Degradation of Polymers. K. Ettre and P. F. Varadi, Machlett Labora tories, Inc., Div. of Raytheon Co., Springdale, Conn. 3:45 Gas Chromatographic Analysis of Poly(Ethylene Ethyl Acrylate) and Poly(Ethylene Vinyl Acetate) Pyrolysates. E. M. Barrall II, R. S. Porter, and J. F. Johnson, California Research Corp., Richmond Calif. 4:00 The Determination of Acetylsalicylic Acid (Aspirin) by Gas Chromatography. R. C. Crippen, Atlas Chem. Ind., Inc., and Henry Freimuth, University of Maryland, Balti more, Md. VOL 34, NO. 9, AUGUST 1962
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ACS MEETING PROGRAM 4:15 Simultaneous Carbon-Hydrogen-Nitrogen Determination by Gas Chromatography. J. M. Walker and C. F . Nightingale, Kansas State College of Pittsburg, Pittsburg, Kan. 4:30 Quantitative Analysis of Aromatic Hydrocarbons by Gas Chromatography. J. Q. Walker, Barber-Colman Co., Pasadena, Tex., and D. L. Ahlberg, Signal Oil & Gas Co., Houston, Tex. 4:45 Gas Chromatography of Unesterified Fatty Acids. J. G. Nikelly, Philadelphia College of Pharmacy and Science, Philadelphia, Pa.
Wednesday Morning, September 12 9:00 A.M. to 11:30 A.M. SYMPOSIUM O N ORGANIC PEROXIDES Robert T. Hall, Presiding
Outstanding Column Packing Materials for Chromatography GC-22 SUPER SUPPORT Universally accepted as the standard of the industry because of its uniformity from column to column. LINDE MOLECULAR SIEVES Types 3A, 4A, 5A, 10X, and 13X prepared under the most exacting specifications for chromatography. ALCOA ALUMINAS Recommended where the most precise classification and maximum activity are essential. DAVIDSON SILICA GELS AND BARNEBY-CHENEY CHARCOALS Dry screen processed to achieve the most carefully denned dimensional limits possible. THE HYDRO-PURGE For carrier gas purification systems where exotic conditions are essential. For additional information on high grade column packing materials for use in gas chromatography, please write to:
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ANALYTICAL CHEMISTRY
9:00 Introductory Remarks, Robert T. Hall. 9:10: Safe Handling, Storage, and Use of Organic Peroxides in the Laboratory. D. C. Noller and D . J. Bolton, Lucidol Division, Wallace & Tiernan Inc., Buffalo, Ν . Υ. 9:35 Determination of Peroxides by Iodine Liberation Methods. R. D. Mair, Hercules Powder Co., Wilmington, Del. 10:05 Colorimetric Determination of Organic Peroxides. Ada L. Ryland, E. I. du Pont de Nemours & Co., Inc., Wil mington, Del. 10:45 Gas Chromatography of Organic Peroxides. S. W. Bukata, L. Zabrocki, and M. McLaughlin, Lucidol Division, Wallace & Tiernan Inc., Buffalo, Ν . Υ. 11:05 Polarographic Behavior of Fatty Acid Peroxides. F. W. Quackenbush, and E . J. Kuta, Purdue University, Lafayette, Ind. 11:30 Studies in the Structure of Organic Peroxides. Daniel Swern and L. S. Silbert, Eastern Regional Research Labora tory, Philadelphia, Pa.
Wednesday Afternoon, September 12 2:00 P.M. to 4:45 P.M. . GENERAL Andrew J. Frank, Presiding
2.00 The Potentiometric Determination of Boron in Boron Suicides. A. J. Frank, Allis-Chalmers Mfg. Co., Milwaukee, Wis. 2:15 Polarimetric Investigation of ti-Tartrate-Orthotellurate Complexes. J. C. Lanese and Bruno Jaselskis, Uni versity of Michigan, Ann Arbor, Mich. 2:30 Thermal Reaction Analysis: A Versatile New Thermal Technique. O. N . Hinsvark and C. B. Eustoh, F&M Scientific Corp., Avondale, Pa. 2:45 High Speed Controlled Potential Coulometry. A. J. Bard, T h e University of Texas, Austin, Tex. 3:00 Indirect Ultraviolet Spectrophotometry Determination of Silicon. L. A. Trudell and D. F . Boltz, Wayne State Uni versity, Detroit, Mich. 3:10 Solvent Extraction Method of Radiocerium. S. F . Marsh, W. J. Maeck, G. L. Booman, and J. E. Rein, Phillips Petroleum Co., Idaho Falls, Idaho. 3:40 Determination of Radiomanganese in Fission Product -Corrosion Product Mixtures. S. F . Marsh, W. J. Maeck, and J. E . Rein, Phillips Petroleum Co., Idaho Falls, Idaho. 4:00 The Polarographic Estimation of Uranium(IV) in Sodium Tripolyphosphate. H. E. Zittel and L. B. Dunlap, Oak Ridge National Laboratory, Oak Ridge, Tenn. 4:15 Coulometric Titration of Nitrite Using the Dual In termediates Mn(III) and F e ( I I ) . R. P. Buck and T . J. Crowe, Bell & Howell Research Center, Pasadena, Calif. 4:35 Spectrograph^ Determination of Manganese, Chro mium, Vanadium, Molybdenum, and Tungsten in Tool Steels by the Rotating Disk Solution Technique. G. L. Vassilaros, Cubicle Steel Central Research Laboratory, Pittsburgh, Pa. 4:45 Polarography of Radiothallium. Emil Wildman and W. B. Schaap, Indiana University, Bloomington, Ind.
ACS MEETING PROGRAM
Thursday Morning, September 13 9:00 A.M. to 11:15 A.M. SECTION A
Automatic Protein and/or
SYMPOSIUM O N DETERMINATION OF WATER John Mitchell, Jr., Presiding Round Table Discussion Divisional Business Meeting
SECTION Β
Peptide Analyses (Either Individual Samples or Column Etrillent)
Quantitate...
NEWER ANALYTICAL TECHNIQUES FOR DRUG RESEARCH (Joint with Medicinal Chemistry Division)
Total Nitrogen by Kjeldahl Total Protein by Biuret
SECTION C
Total Protein by Folin-Ciocalteau (Lowry modification)
PHYSICAL METHODS OF CARBOHYDRATE ANALYSIS (Joint with Division of Carbohydrate Chemistry)
Amino Groups by Ninhydrin Tyrosine by Folin—Ciocalteau
Thursday Afternoon, September 13 2:00 P.M. to 4:45 P.M.
Histidine by Pauly Diazo Reaction Arginine by Sakaguchi
SECTION A
Glutamic Acid by Decarboxylase
GENERAL
Lysine by Decarboxylase
Charles N. Reilley, Presiding
2:00 Kinetic Factors in Visual Chelometric End Points. C. N . Reilley and D . A. Aikens. Uni versity of North CaroUna, Chapel Hill, N . C. 2:20 E D T A as a Masking Agent in Selective Spectrophotometric Determination of Copper with Triethylenetetramine. An Interpretation of Masking. K. L. Cheng, RCA Labora tories, Princeton, N . J. 2:40 The Determination of P a r t s per Billion Iron by Fluorescence Extinction. Jacob Block and Evan Morgan, Olin Mathieson Chemical Corp., New Haven, Conn. 2:55 Reversed Phase Partition Chromatography of Cations with Bis-(di-n-hexylphosphinyl) methane. J. W. O'Laughlin and C. V. Banks, Iowa State University, Ames, Iowa. 3:10 Investigation of 2-Pyridinaldimine as an Analytical Reagent. G. A. Pearse, Jr., LeMoyne College, Syracuse, Ν . Υ. 3:30 Analytical Application of a Photochemical Process. T. Kuwana and J. N . Pitts, Jr., University of California, Riverside, Calif. 3:50 Microdetermination of Carbon and Hydrogen in Organic Materials: Gas Chromatographic Determination of Combustion Products. O. N . Hinsvark and P. B. Beltz, F&M Scientific Corp., Avondale, Pa. 4:05 Transesterification of Lipids with Boron Trichloride. J. I. Peterson, H. DeSchmertzing, and Kenneth Abel, Melpar, Inc., Falls Church, Va. 4:20 Colorimetric Determination of Trace Quantities of Alpha Dicarbonyl and Quinone Type Conjugated Dicarbonyl Compounds. D. P. Johnson, E. E. Critchfield, and J. E. Ruch, Union Carbide Chemicals Co., South Charleston, W. Va. 4:35 Chemical Structure of Bituminous Coal. Hayes Slaughter and Carol Slaughter, New Mexico Highlands Uni versity, Las Vegas, Ν . Μ. 4:45 High Resistance and Derivative Polarography. P. S. McKinney and W. B. Schaap, Indiana University, Bloomington, Ind.
Albumin by H A B A Dye [2-(4' hydroxyazobenzene) benzoic add]
Analyze... Biological Fluids directly Effluent from D E A E or Resin Chromatographic Column Effluent from Poraeth Electrophoretic Column Electrophoretic Starch Block Fractions Electrophoretic Paper Chromatogram Segments Check point stages in Protein Fractionation Counter Current Distributions with
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SECTION Β NEWER ANALYTICAL TECHNIQUES FOR DRUG RESEARCH (Joint with Medicinal Chemistry Division)
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SECTION C PHYSICAL METHOD OF CARBOHYDRATE ANALYSIS (Joint with Division of Carbohydrate Chemistry)
Circle No. 160 on Readers' Service Card VOL 34, NO. 9, AUGUST 1962
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NEWS
Eastern Analytical Symposium The Fourth Annual Eastern Analyti cal Symposium will be held at the Statler Hilton Hotel, New York City, November 14 to 16. The three-day meeting is sponsored by the Analytical Groups of the New York and North Jersey Sections, ACS, the Society for Applied Spectroscopy, Baltimore-Washington, Delaware Val ley, New York, and New England Sec tions, and the Metropolitan . Microchemical Society. Eighty-five manufacturers of chemi cal instruments and supplies will dis play their products. Dr. Arnold Mowitz, Interchemical Corp., is general chairman, William A. Davis, Raytheon Co., Lowell, Mass., is secretary, and Paul Lublin, General Telephone and Electronics Labora tories, Bayside, Ν. Υ., is publicity chairman.
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W e d n e s d a y M o r n i n g , November 14 THERMAL ANALYSIS S. Gordon, Presiding
Grunbaum-Kirk Self-Adjusting Micropipet
9
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Dickinson University,
Thermometric Titrations, J. Jordan, Pennsylvania State University Cryoscopic Evaluation of Purity, R. J. Best, American Cyanamid Co. Thermogravimetry and DTA, S. Gor don, Fairleigh Dickinson University
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GAS CHROMATOGRAPHY IN MEDICAL RESEARCH S. R. Lipslcy, Yale University, Presiding
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Analyses of Urinary Steroids by Gas Chromatography, R. Rosenfeld, Sloan Kettering Institute, Memorial Hospital The Use of Gas Chromatography on the Study of Hypocholesterolemic Agents, W. Holmes, Smith Kline and French A Study of the Fatty Acids and Alde hydes of Human Platelet Phosphatides by Gas Chromatography, A. Marcus, Vet. Administration Hospital, New York Uni versity Wednesday Afternoon PREPARATIVE GAS CHROMATOGRAPHY H. Szysmanski, Canisius University, Presiding
Preparative Gas Chromatography, H. Felton, Dupont Co. Preparative Gas Chromatography in Academic Research, J. Amy, Purdue University New Approaches to Preparative Gas Chromatography, H. Szysmanski, Canis ius University Panel Discussion of Gas Chromatog raphy ANALYTICAL APPLICATIONS OF NMR L. N. Mulay, University of Cincinnati, Presid ing
Circle No. 114 οι Read·»' senrica Card 42 A
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ANALYTICAL CHEMISTRY
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NEWS
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The Realm of NMR—High Resolution, Broad Line, and Relaxation Phenomena, L. N. Mulay, University of Cincinnati NMR Relaxations in Polymer Melts and Solutions, D . McCall, Bell Laboratories NMR Applied to Polymer Research, J. A. Sauer, Pennsylvania State University Quantitative Aspects of NMR, H. Foster, Dupont Co.
Scientific Industries
THERMAL ANALYSES OF H I G H POLYMERS D. Johnso/t^ Dupont Co., Presiding
DTA of High Polymers, J. R. Knox, Avisun Corp. DTA Instrumentation for High Polymer Studies, J. Chiu, Dupont Co. Thermogravimetry in Polymer Research, C. D. Doyle, General Electric Co. Effluent Analyses in Thermal Studies, P. A. Garn, Bell Laboratories ADVANCES IN INSTRUMENTATION CLINIC ANALYTICAL INSTRUMENTATION IN THE MEDICAL SCIENCES S. Natelson, Roosevelt Hospital, Moderator
Thursday Morning, November 15 NEW DEVELOPMENTS IN EXCITATION SOURCES M. Margoshes, National Bureau of Standards, Presiding
Excitation of Various Elements by Radio Frequency Excitation, Potential Analytical Applications, R. Mavrodineanu and R. C. Hughes, Philips Laboratories Optical Microemission Stimulated by a Ruby Laser, F . Brech, Jarrell-Ash Corp. Plasma Jets and Gas-Stabilized Arc Sources, M. Margoshes, National Bureau of Standards QUANTITATIVE MICRO ANALYSIS R. Hofstader, Esso Research Engineering Laboratory, Presiding
Use of X-Rays in Quantitative Clinical Chemistry, S. Natelson, Roosevelt Hospital Determination of Fluorine and Oxygen by Neutron Activation, R. Steele, Esso Research Engineering Laboratory Quantitation in Inorganic Microchemistry, Y. Cheng, R. C. A. Laboratories X-RAYS IN POLYMER ANALYSIS R. S. Stein, University of Massachusetts, Presiding
The Use of Pole Figure Analysis in the Study of Polymers, P. H. Jlindenmeyer, Chemstrand Research Center Studies of Partially Ordered Crystalline Polymers, H. W. Wyckoff, American Viscose Corp. Studies of Low Angle X-Ray Scattering from Polymers, W. O. Statton, Dupont Co.
Thursday Afternoon RECENT APPLICATIONS OF ELECTRON PROBE MICROANALYSIS K. &. Carroll, Sperry-Rand Research Center, Presiding
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NEWS Geological and Mineralogical Applica tions of the Microprobe, I . Adler, U. S. Geological Survey Analytical Procedures in Microprobe Analysis, T. Ziebold, Μ. Ι. Τ . Metallurgical Applications of the Scanning Beam Microprobe, It. M. Fisher, TJ. S. Steel Fundamental Research Laboratory
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Thin Layer Chromatography, E . Wollish, Hoffmann-LaRoche Electrophoresis, P . Plaisted, BoyceThompson Institute Paper Chromatography, H . Strain, Argonne National Laboratory MOLECULAR WEIGHT MEASUREMENTS
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Charles Pfifer, Hoffmann-LaRoche, Presiding
Farwell Street, Newtonville 60, Mass.
F. W . Billmeyer, Jr., Dupont Co., Presiding
Number Average Molecular Weights, Osmometry, W. R. Krigbaum, Duke University Ebulliometry, M. Ezrin, Monsanto Chemical Co. Cryoscopy, E. J. Newitt, Dupont Co. Weight Average Molecular Weights, Light Scattering, D. Mclntyre, National Bureau of Standards Equilibrium Ultracentrifugation, D . A. Yphantis, Rockefeller Institute Nonequilibrium or Transport Methods, W. H. Stockmayer, Dartmouth College Fractionation, N . S. Schneider, M.I.T. ADVANCES IN INSTRUMENTATION CLINIC GAS ANALYSIS
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Friday Morning, November 16 SYMPOSIUM O N EVALUATION OF SPECTROPHOTOMETRIC PERFORMANCE INSTRUMENTAL PARAMETERS IN SPECTROPHOTOMETRY E. J . Rosenbaum, Drexel Institute of Technology, Presiding R. C. Hawes, Applied Physics Corp. W . Kaye, Beckman Instruments W . Slavin, Perkin-Elmer Corp. TRACE ANALYSIS G. H. Morrison, Cornell University, Presiding
Modern Techniques of Trace Element Analysis, G. H. Morrison, Cornell Uni versity Activation Analysis with Portable Neutron Generators, E . L. Steele, Esso Research Analysis of Solid State Materials, S. J. Adler, R. C. A. Laboratories Meaning of Trace Metal Analysis to the Biological Sciences, B. L. Vallée, Harvard Medical School and Peter Bent Brigham Hospital CHEMICAL MICROSCOPY V. Thomas, Interchemical Corp., Presiding
D i v i s i o n of T h e M a t h e s o n C o m p a n y , I n c . Norwood (Cincinnati), Ohio; East Rutherford, New Jersey
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ANALYTICAL CHEMISTRY
Introduction and General Applications, F . W. Farwell, American Cyanamid Co.
NEWS
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A break between technical sessions at the 15th Analytical Summer Symposium is used for a rapid conference by (left to right) William C. Rurdy, University of Maryland, Local Chairman, Lewis H. Rogers, Vitro Laboratories, West Orange, N. J., and Howard W. Malmstadt, University of Illinois, both Cochairman. The symposium sponsored by the Division of Analytical Chemistry, ACS, and ANALYTICAL CHEMISTRY, was held at the University of Maryland, College Park, Md., June 13 to 15 Theory and Principle of Measurement, P. Bartels, E. Leitz Co. Specialized Applications Including Pleochromism, M. Willard, Pennsylvania State University Friday Afternoon SYMPOSIUM O N EVALUATION OF SPECTROPHOTOMETRY PERFORMANCE E. J . Rosenbaum, Drexel Institute of Technology, Presiding
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ANALYTICAL CHEMISTRY
Wave Length and Photometric Stand ards in Infrared Spectrophotometry, M. K. Wilson, Tufts University Photometric Standards in Visible and Ultraviolet Spectrophotometry, J. M. Vandenbelt, Park, Davis & Co. Panel Discussion, speakers from both sessions QUALITATIVE O R G A N I C MICROCHEMISTRY H . Wadlow, Bell Laboratories, Presiding
Techniques and Applications in Or ganic Qualitative Analysis, N . Cheronis, Brooklyn College Crime and Crystallography, L. DalCortivo, Office Medical Examiner, Suf folk County, Ν . Υ. Identification of TJnsaturation, J. Shareskin, Brooklyn College ADVANCES IN INSTRUMENTATION CLINIC 2:00 P.M. QUALITY C O N T R O L IN EMISSION SPECTROSCOPY—AUTOMATION R. J . Carls, American Smelting & Refining Co., Moderator 3:30 P.M. SAMPLE PREPARATION T E C H N I Q U E S X-RAY SPECTROSCOPY
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SPECTRA REPEATED
NEWS
WITHIN 0.003 ABSORBANCE, 0.5 A
A O A C Meeting The 76th annual meeting of the As sociation of Official Agricultural Chem ists, Inc., will be held at the Shoreham Hotel, Washington, D. C , October 15 to 17. Reports and papers from members and nonmembers on analytical meth odology will be presented in various sessions covering such areas as analysis of animal feeds, plant materials, to bacco, gums, marine products, fats and oils, nutritional adjuncts, decomposition and filth in foods, processed vegetable products, cacao products, drugs, anti biotics, analytical entomology, ex traneous materials in foods, fertilizers and liming materials, alcoholic bever ages, food additives, pesticide formula tions, pesticide residues, color additives, cosmetics, foods, flavors, preservatives in foods, carbohydrates, dairy products, cereals, and meat and meat products. Special events include the presi dential address, a talk by a prominent scientist, a business session, and a banquet. The Harvey W. Wiley Award will be presented at the banquet to a scientist who has contributed greatly to the development of analytical methods over the years. Several laboratory equipment and supply firms will exhibit many of their newest items that are of interest to analytical and research chemists. Registration is free. All interested scientists from federal, state, and local agencies, universities, agricultural ex periment stations, industrial and com mercial firms, and other groups are invited to attend. All correspondence and requests for information should be addressed to Dr. William Horwitz, Secretary-Treasurer, the Association of Official Agricultural Chemists, Inc., Box 540, Benjamin Franklin Station, Washington 4, D. C.
The Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy The 14th Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy will be held at the PennSheraton Hotel, Pittsburgh, Pa., March 4 to 8, 1963. The following symposia will be pre sented : Solution Techniques in X-Ray and Emission Spectroscopy, Techniques Related to Infrared Spectroscopy, Nu clear Magnetic Resonance—Nuclei Other Than Hydrogen, Gas Chroma tographic Analysis of Metallo-Organics and Related Compounds, Uses of Reac tion Rates in Analytical Chemistry, and The Analysis of Refractory Metals. Circle No. 11 on Readers' Service Card -
on Cary Model 15 Spectrophotometer
2450 A
2400 A H I UUP
2550 A
2500 A
2600 A
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Five superimposed scans show Model 15's excellent photometric and wavelength reproducibility. For sample spectra and per formance details, send for Data File A237-82.
Traditional Cary performance is built in. Advanced design ο
provides precision and reliability over 1750-8000 A range: At ο
1850 A, near zero absorbance, photometric accuracy is 0.002 ο
with 0.3 A resolution ...even at 2.0 absorbance, photometric ο
accuracy is 0.008 with 3 A resolution. Functional design gives new ease of operation. Coupled scan and chart drive permit varying scan speed without affecting wavelength presentation. Separate, synchronous chart drive also provided for kinetic studies. APPLIED PHYSICS CORPORATION 2 7 2 4 SOUTH PECK ROAD · MONROVIA, CALIFORNIA
INSTRUMENTS Raman; UV/IR
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