The combined effect of ultraviolet (UV)-ozonation (O 3 ) of aqueous 14 C-TNT solutions followed by direct addition of the solutions to aerobic soils was examined as a method of disposal. The effect of TNT concentration was studied on both UV-O 3 and soil metabolism. The amount of TNT degraded by either process decreased as the concentration increased. UV-O 3 of a 1 ppm solution of TNT using a laboratory 450 W lamp for 10, 20, and 30 minutes resulted in substantial fragmentation of the ring and an increase in polarity of the resultant products. Soil metabolism, as measured by metabolic CO 2 evolution, increased as the time of prior UV-O 3 increased. A large amount of the 14 C associated with 14 C-TNT recovered from soil was in the non-extractable fraction. When a Pseudomonas putida , adapted to metabolize ortho -nitrophenol or picric acid as a sole source of carbon and nitrogen, was substituted for the soil phase, about 25% of the added 14 C appeared as 14 CO 2 . 1,3,5-Trinitrobenzene, 2,4,6-trinitrobenzaldehyde, 3,5-dinitrophenol, 3, 5-dinitrocatechol, 3,5-dinitrohydroquinone, and oxalic acid were identified as products of UV-O 3 . Rapid destruction of TNT took place in a large 66 lamp unit, and the resultant distribution of 14 C was similar to the results from the laboratory studies.

Two regioselective synthetic routes to 1,2,3,6,7,8-hexachlorodibenzo-p-dioxin have been developed. Each consists of dinitration of a tetrachlorodibenzo-p-dioxin followed by reduction and a Sandmeyer reaction.

Two steroidal olefins were isolated from the hydrocarbon fraction of a n-hexane extract of nonfat dry milk. They were characterized as 24-methyl-Δ2-cholestene (Δ2-campestene) and 24-ethyl-Δ2-cholestene (Δ2-sitostene) by gas chromatography, mass spectrometry, and synthesis.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMass spectrometry of three furanic compounds containing two or three furan nucleiAldo. Ferretti, Vincent P. Flanagan, and John M. RuthCite this: J. Agric. Food Chem. 1974, 22, 4, 729–731Publication Date (Print):July 1, 1974Publication History Published online1 May 2002Published inissue 1 July 1974https://pubs.acs.org/doi/10.1021/jf60194a001https://doi.org/10.1021/jf60194a001research-articleACS PublicationsRequest reuse permissionsArticle Views67Altmetric-Citations4LEARN 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

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMass spectrometric identification of the hepta- and octachlorinated dibenzo-p-dioxins and dibenzofurans in technical pentachlorophenolJack R. Plimmer, John M. Ruth, and Edwin A. WoolsonCite this: J. Agric. Food Chem. 1973, 21, 1, 90–93Publication Date (Print):January 1, 1973Publication History Published online1 May 2002Published inissue 1 January 1973https://pubs.acs.org/doi/10.1021/jf60185a036https://doi.org/10.1021/jf60185a036research-articleACS PublicationsRequest reuse permissionsArticle Views55Altmetric-Citations29LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

Abstract3,5‐Bis‐amino‐1,2,4‐dithiazoliumbromide (Ia)‐(Ic) reagieren mit Kaliumcyanat über diskutierte Zwischenstufen (II) und (III) zu den Thiadiazinonen (IVa)‐(IVc).

Durch Hydrogenolyse, Ozonolyse, spektroskopische Analyse aller Produkte und Bioversuche gelingt es, den Sexuallockstoff des Apfelw:icklers als (2Z, 6E)-Decadienol (XI) zu identifizieren.′ Die Synthese eines Gemisches der Z,E-Isomeren von (XI) erfolgt nach dem im Formelplan skizzierten Schema.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of some dithiazolium cations with potassium cyanateJames E. Oliver, Barbara A. Bierl, and John M. RuthCite this: J. Org. Chem. 1972, 37, 1, 131–133Publication Date (Print):January 1, 1972Publication History Published online1 May 2002Published inissue 1 January 1972https://pubs.acs.org/doi/10.1021/jo00966a035https://doi.org/10.1021/jo00966a035research-articleACS PublicationsRequest reuse permissionsArticle Views61Altmetric-Citations7LEARN 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

Durch Hydrogenolyse, Ozonolyse, spektroskopische Analyse aller Produkte und Bioversuche gelingt es, den Sexuallockstoff des Apfelw:icklers als (2Z, 6E)-Decadienol (XI) zu identifizieren.′ Die Synthese eines Gemisches der Z,E-Isomeren von (XI) erfolgt nach dem im Formelplan skizzierten Schema.

A phthalate ester, recently isolated from thermally oxidized corn oil, has been identified as di-2-ethelhexyl phthalate.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMathematical solution of the mass spectrometric standard mixture problemJohn M. RuthCite this: Anal. Chem. 1968, 40, 4, 747–750Publication Date (Print):April 1, 1968Publication History Published online1 May 2002Published inissue 1 April 1968https://pubs.acs.org/doi/10.1021/ac60260a018https://doi.org/10.1021/ac60260a018research-articleACS PublicationsRequest reuse permissionsArticle Views52Altmetric-Citations11LEARN 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

The principal free and combined higher fatty acids of flue-cured (Bright) tobacco have been shown to contain sixteen or eighteen carbon atoms. Seventy-six per cent of the total acids were found to be relatively non-polar saturated or olefinic types with palmitic acid comprising 20·7%, stearic acid (2·1%), oleic acid (3·5%), linoleic acid (5·8%) and linolenic acid (26·2%). Ninety per cent of the total acids were shown to have unbranched structures of 10–34 carbon atoms. Only 4·1% were homologous monomethyl or cyclohexyl substituted compounds and 5·9% had more complex branched structures. The saturated hydrocarbons derived from the simply branched acids proved to be homologs of 2-methyl and 3-methyl isomers with 15–26 carbons atoms and 1-cyclohexyl isomers with 22–25 carbon atoms.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Paraffin Hydrocarbons of Wool Wax. Homologous Series of Methyl Alkanes*James D. Mold, Richard E. Means, Robert K. Stevens, and John M. RuthCite this: Biochemistry 1966, 5, 2, 455–461Publication Date (Print):February 1, 1966Publication History Published online1 May 2002Published inissue 1 February 1966https://doi.org/10.1021/bi00866a009RIGHTS & PERMISSIONSArticle Views82Altmetric-Citations30LEARN 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 InReddit PDF (607 KB) Get e-Alerts Get e-Alerts

The principal free and combined higher fatty acids of flue-cured (Bright) tobacco have been shown to contain sixteen or eighteen carbon atoms. Seventy-six per cent of the total acids were found to be relatively non-polar saturated or olefinic types with palmitic acid comprising 20·7%, stearic acid (2·1%), oleic acid (3·5%), linoleic acid (5·8%) and linolenic acid (26·2%). Ninety per cent of the total acids were shown to have unbranched structures of 10–34 carbon atoms. Only 4·1% were homologous monomethyl or cyclohexyl substituted compounds and 5·9% had more complex branched structures. The saturated hydrocarbons derived from the simply branched acids proved to be homologs of 2-methyl and 3-methyl isomers with 15–26 carbons atoms and 1-cyclohexyl isomers with 22–25 carbon atoms.

Fifteen C6 hydrocarbons have been isolated from cigarette smoke by gas chromatography. Identification was based on information derived from retention times on two different columns and from infrared and mass spectra. Semiquantitation with mass spectrometric analyses.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Paraffin Hydrocarbons of Wool Wax. Normal, Iso, Anteiso, and Other Branched IsomersJames D. Mold, Richard E. Means, Robert K. Stevens, and John M. RuthCite this: Biochemistry 1964, 3, 9, 1293–1298Publication Date (Print):September 1, 1964Publication History Published online1 May 2002Published inissue 1 September 1964https://doi.org/10.1021/bi00897a018RIGHTS & PERMISSIONSArticle Views89Altmetric-Citations41LEARN 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 InReddit PDF (730 KB) Get e-Alertsclose Get e-Alerts

When the secular equation in the form | H — Eλ | =0, where H is the matrix product GF or FG, is expanded into a polynomial equation of degree n in λ, a set of n algebraic equations in the n unknowns Ftt′ is obtained. The degrees of these equations are 1, 2, 3, ···, n, respectively. The number of solutions (sets of force constants) is n!, the number of possible sets of frequency assignments is also n!, and one set of force constants corresponds to each set of frequency assignments. When the frequencies are all different, the sets of force constants are all different, and in a diagonal F matrix all the force constants are real and positive. As an illustration, the six sets of force constants for the valence force treatment of a triatomic model of the ethyl chloride skeleton are computed, and the corresponding frequency assignments are determined.

With a potential function based on the valence force field approximation, Wilson's G-F matrix method was used to determine the force constants of a simplified molecular model of methyl thionitrite (CH3SNO). The derivation of the model's Lagrangian function in Cartesian coordinates was used as a check of the numerical calculations performed with the aid of the G-F matrix method. The model's normal modes of vibration and their normalized energy distribution among the internal coordinates were calculated. These results led to the reassignment of two fundamental frequencies of methyl thionitrite.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Paraffin Hydrocarbons of Tobacco; Normal, Iso-, and Anteiso-HomologsJames D. Mold, Robert K. Stevens, Richard E. Means, and John M. RuthCite this: Biochemistry 1963, 2, 3, 605–610Publication Date (Print):May 1, 1963Publication History Published online1 May 2002Published inissue 1 May 1963https://doi.org/10.1021/bi00903a037RIGHTS & PERMISSIONSArticle Views61Altmetric-Citations52LEARN 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 InReddit PDF (726 KB) Get e-Alerts Get e-Alerts