R. G. Scholz

Kraft Heinz (United States)

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James F. Bednarczyk

IIT Research Institute

Leon L. Gershbein

Tel Aviv University

Raymond J Gajan

United States Food and Drug Administration

Kent R. Vincent

Robert Moffitt

Johns Hopkins University

John Angelo Fiorino

United States Food and Drug Administration

L. R. Ptak

Continental (United States)

Albert L Woodson

United States Food and Drug Administration

A. D. O’Donnell

IIT Research Institute

Tomoya Yamauchi

Kobe University

Cooperative Institutions

IIT Research Institute

United States Food and Drug Administration

Illinois Institute of Technology

University of Illinois Chicago

Tel Aviv University

Assaf Harofeh Medical Center

John F. Kennedy Medical Center

Northwest Hospital

Institute for Medical Research

Northwestern Medical Faculty Foundation

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[On the demonstration of fetal hemoglobins in acquired blood diseases by the elution method].

PubMed (1966)

R. G. Scholz

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Citations (0)

Oxidative Thermal Degradation of Selected Polymeric Spacecraft Materials

Birkhäuser Basel eBooks (1972)

Winfried K. Rudloff A. D. O’Donnell R. G. Scholz A. Valaitis

A number of commercial polymeric materials used in U. S. spacecraft and airplanes were investigated from the point of view of oxidative thermal stability and toxicity of possible volatile oxidation products. To this end, methods of thermal analysis (dta, tga, dtg) were applied to study the oxidation profiles of five different groups of polymers in pure oxygen at 14.7 psi, at 5 psi, and in a mixture of 50% N2 and 50% O2 at 5 psi. The volatile reaction products were collected and then separated and identified by combined gas chromatography-mass spectrometry. In a few preliminary experiments, thermal degradation was performed in steps corresponding to steps in the thermogram. The volatiles pertaining to each step were collected and analyzed. Results from the thermal and GC/MS analyses were correlated to possible oxidative degradation mechanisms.

Degradation

Thermal Stability

Thermal oxidation

10.1007/978-3-0348-5775-8_18

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Separation and quantification of red beet betacyanins and betaxanthins by high-performance liquid chromatography

Journal of Agricultural and Food Chemistry (1978)

Kent R. Vincent R. G. Scholz

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSeparation and quantification of red beet betacyanins and betaxanthins by high-performance liquid chromatographyKent R. Vincent and Robert G. ScholzCite this: J. Agric. Food Chem. 1978, 26, 4, 812–816Publication Date (Print):July 1, 1978Publication History Published online1 May 2002Published inissue 1 July 1978https://pubs.acs.org/doi/10.1021/jf60218a026https://doi.org/10.1021/jf60218a026research-articleACS PublicationsRequest reuse permissionsArticle Views591Altmetric-Citations40LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

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10.1021/jf60218a026

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Citations (60)

A gas chromatographic method for measuring rancidity in vegetable oils

Journal of the American Oil Chemists Society (1966)

R. G. Scholz L. R. Ptak

Abstract A simple gas chromatographic procedure was developed for measuring the degree of rancidity in cottonseed oil and other vegetable oils. The procedure employs and internal standard for quantitating the amount of n ‐pentane in the oil samples and relates this quantity to organoleptic panel tests. The precision is good, and the results correlate well with panel tests. The procedure is very sensitive to detection and quantitation of oxidative changes in oils. Its use minimizes manipulation of the sample and thus avoids alteration of the rancidification products or the state of oxidation.

Cottonseed

Organoleptic

Cottonseed oil

Pentane

10.1007/bf02641196

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Citations (38)

Identification of pristane in human sebum and related lipid sources

Biochemical and Biophysical Research Communications (1969)

Hugh J. O’Neill Leon L. Gershbein R. G. Scholz

Gram

10.1016/0006-291x(69)90716-5

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Citations (16)

SOLID SUPPORT EFFECTS IN GAS CHROMATOGRAPHY

R. G. Scholz

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Citations (2)

Determination of Lead in Evaporated Milk by Atomic Absorption Spectrophotometry and Anodic Stripping Voltammetry: Collaborative Study

Journal of AOAC INTERNATIONAL (1973)

John Angelo Fiorino Robert Moffitt Albert L Woodson Raymond J Gajan Glen E Huskey

Abstract A method for the determination of lead in evaporated milk was successfully collaborated by 11 laboratories. Five laboratories used both atomic absorption spectrophotometry (AAS) and anodic stripping voltammetry (ASV) for the determination, 5 used only the atomic absorption method, and 1 used only the polarographic method. Each collaborator received 12 samples, 2 at each of the 5 different levels (0.06–0.95 ppm) and 2 practice samples with a known lead content. Both AAS and ASV were equally suitable for the determination of lead in the concentration range studied. The pooled variation between duplicate determinations was 0.0010 and 0.0016 for the AAS and ASV methods, respectively. For the AAS determinations the coefficients of variation (random error components) decreased from 43% at the lowest Pb level to 4% at the highest level. Although the ASV results did not show the same regularity of decreasing coefficients of variation with increasing Pb level, the coefficients of variation were acceptable: 28% at the 0.06 ppm level and 6% at the 0.22 ppm level. The AAS method has been adopted as official first action and the ASV method as interim official first action.

Anodic Stripping Voltammetry

Stripping (fiber)

Polarography

Spectrophotometry

10.1093/jaoac/56.5.1246

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Citations (6)

Retention Data

Journal of Chromatographic Science (1963)

R. G. Scholz

Retention Data Get access Robert G. Scholz Robert G. Scholz Continental Can Company, Inc., Chicago 20, Illinois Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Chromatographic Science, Volume 1, Issue 10, October 1963, Page 31, https://doi.org/10.1093/chromsci/1.10.31 Published: 01 October 1963

10.1093/chromsci/1.10.31

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Citations (1)

Gas Chromatographic Analysis of Polymers after Oxidative Degradation.

Analytical Chemistry (1966)

R. G. Scholz James F. Bednarczyk Terry. Yamauchi

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGas Chromatographic Analysis of Polymers after Oxidative Degradation.R. G. Scholz, James. Bednarczyk, and Terry. YamauchiCite this: Anal. Chem. 1966, 38, 2, 331–334Publication Date (Print):February 1, 1966Publication History Published online1 May 2002Published inissue 1 February 1966https://pubs.acs.org/doi/10.1021/ac60234a001https://doi.org/10.1021/ac60234a001research-articleACS PublicationsRequest reuse permissionsArticle Views38Altmetric-Citations6LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

Degradation

10.1021/ac60234a001

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Citations (6)

The Analysis of Polymers by Oxidative Degradation

Springer eBooks (1966)

R. G. Scholz James F. Bednarczyk Tomoya Yamauchi

Characterization

Degradation

Polymer degradation

10.1007/978-1-4684-8694-0_30

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Citations (0)