Formerly: Beiträge zur Tabakforschung International

Contributions to Tobacco & Nicotine Research

Contributions to Tob. Res. ONL

<abstract><title style='display:none'>Abstract</title> A new spectrophotometric method, suitable for routine determination of nitrate in tobacco, is described. Quantities as low as 0.05 % of nitrate in tobacco are determinable, the results can be reproduced very well (RSD (relative standard deviation) = 1.43 % for 0.7 % of nitrate in tobacco). 15-20 determinations per day and per person can be performed. The figures obtained by this method are identical with those obtained by other methods. Interferences by other compounds have not been observed. Commercial cigarettes show contents of nitrate in tobacco in the range between 2 % and 0.04 %. </abstract>

Abstract

BAT Cigaretten-Fabriken GmbH, Forschung und Entwicklung, Hamburg, Germany

<article-title>The Determination of Nitrate in Tobacco by UV-Spectrometry / Die Bestimmung von Nitrat in Tabak durch UV-Spektrometrie</article-title>

The Determination of Nitrate in Tobacco by UV-Spectrometry / Die Bestimmung von Nitrat in Tabak durch UV-Spektrometrie

<abstract><title style='display:none'>Abstract</title> Having reviewed general conditions and various difficulties of routine measurement and control of tobacco humidity, the authors present a new periodic-automatical principle which they developed for the determination of the moisture content of tobacco. Tobacco specimens continuously taken from the conveyor by an automatic sampler are tested by the principle of conductibility with constant pressure and time values. A velocity of 5 to 9 measurements per minute can easily be achieved. The measuring process is controlled by electronic programming. The results are recorded as deviation from a desired value by a registering instrument giving preferably also an account of the time of sampling. The said value to be fixed at choice represents a given electric resistance which is adjusted to the desired humidity value, to the temperature at the measuring point and to the specific properties of the respective tobacco mixture. Supplementary appliances for the automatic indication of ranges, the direct registering of figures and the storage of results can be incorporated with the apparatus presented. It is also possible to take parallel measurements of temperature and to compensate for its influence on the measuring results. </abstract>

Wissenschaftliche Abteilung der Martin Brinkmann AG, Bremen, Germany

<article-title>A Periodic-Automatic Apparatus for the Determination of the Moisture Content of Tobacco / Eine periodisch-automatische Feuchtigkeitsmesseinrichtung für Tabak</article-title>

A Periodic-Automatic Apparatus for the Determination of the Moisture Content of Tobacco / Eine periodisch-automatische Feuchtigkeitsmesseinrichtung für Tabak

<abstract><title style='display:none'>Abstract</title> The electric polarity of cigarette mainstream smoke depending on the remaining length of the cigarette was determined using two different devices. Furthermore the concentrations of positive and negative charges in the smoke were dimensionally measured. The results show that positive as well as negative charges are existent in mainstream smoke with about the same concentration of 10-11 Amp × sec × cm-3. Moreover an apparatus is described which permits the isolation of only the positively or negatively charged part of the cigarette smoke aerosol. The contamination of one separated part by particles of the opposite charge is found to be less than 3 %. By use of this distribution chamber parts of condensate of both polarities were obtained. The total IR-spectra of these parts showed no distinct general difference in chemical composition of positively or negatively charged particles of cigarette smoke. </abstract>

Physikalisches Laboratorium H. F. & Ph. F. Reemtsma, Hamburg, Germany

<article-title>Electric Polarity of Cigarette Mainstream Smoke / Die elektrischen Ladungen des Hauptstromrauches von Cigaretten</article-title>

Electric Polarity of Cigarette Mainstream Smoke / Die elektrischen Ladungen des Hauptstromrauches von Cigaretten

<abstract><title style='display:none'>Abstract</title> There is a proportional dependence between pressure difference and air stream of porous cigarette papers. In the case of perforated papers, however, the said relationship conforms to a non-linear function. It is therefore important to measure the permeability to air of these papers under a pressure difference that corresponds to the actual pressure conditions in cigarettes, i.e. approximately 0.25 dm water column gauge. With identical air permeability and identical degree of ventilation the yields of condensate, nicotine and phenols in the mainstream smoke of cigarettes made with porous paper decrease to a larger extent than the yields of the mentioned substances in the mainstream smoke of cigarettes made with perforated paper. </abstract>

<article-title>Comparative Investigations of Porous Cigarette Papers and Perforated Papers / Zum Problem vergleichender Untersuchungen an porösen und perforierten Cigarettenpapieren</article-title>

Comparative Investigations of Porous Cigarette Papers and Perforated Papers / Zum Problem vergleichender Untersuchungen an porösen und perforierten Cigarettenpapieren

<abstract><title style='display:none'>Abstract</title> The filling gap counter formerly described has been improved. The apparatus detects and counts the number of holes (irregularities) of cigarettes. A comparison of the results obtained respectively by manual and mechanical control showed the judgement formed by an examiner to be unsatisfactory. The ejection of faulty cigarettes as well as the automatical recording of the rate of irregularities are prerequisites to the rapid discovery of the source of defects. </abstract>

<article-title>An Apparatus for the Control of Tobacco Filling Regularity of Cigarettes. 2nd Report: Results of an Improved Gap Counter / Ein Gerät zum Prüfen der Füllungsgleichmäßigkeit von Cigaretten: 2. Mitteilung: Ergebnisse mit einem verbesserten Lochzähler</article-title>

An Apparatus for the Control of Tobacco Filling Regularity of Cigarettes. 2nd Report: Results of an Improved Gap Counter / Ein Gerät zum Prüfen der Füllungsgleichmäßigkeit von Cigaretten: 2. Mitteilung: Ergebnisse mit einem verbesserten Lochzähler

<abstract><title style='display:none'>Abstract</title> The experimental results indicated in the present paper reveal that among all humectants admitted 1,3-butyleneglycol alone has marked fungicidal properties satisfying the requirements of practical tobacco treatment, and that, on the other hand, diethyleneglycol and glycerine practically do not have such qualities </abstract>

<article-title>Comparison of the Fungicidal Properties of Different Humectants in a Tobacco Blend / Vergleich der fungistatischen Wirkung verschiedener Feuchthaltemittel bei einer ungesoßten Tabakmischung</article-title>

Comparison of the Fungicidal Properties of Different Humectants in a Tobacco Blend / Vergleich der fungistatischen Wirkung verschiedener Feuchthaltemittel bei einer ungesoßten Tabakmischung

<abstract><title style='display:none'>Abstract</title> A balance of total water in the smoking of a cigarette is presented indicating theoretically calculated as well as experimentally determined quantities. Both groups of values are found to coincide to a large extent. As the quantity of the water of combustion of a given tobacco variety or tobacco mixture does not vary (Virginia: 314 mg per g of tobacco), changes of total water values are a function of the initial moisture content of tobacco only. Approximately 3 % of the total water leave the cigarette at its tip. Nearly 2 % penetrate the paper wrapping (without its burning ring), and 95 % escape from the incandescent end. The particulate phases of the studied smoke streams are poor in water, i. e. they include only 2 % of the total water, while the water content of the gaseous phases amounts to 98 %. The total water of a cigarette is found to be distributed among the particulate and gaseous phases of the various smoke streams as follows: mainstream smoke 3 %, glow stream 80.5 %, sidestream smoke 14.5 %, diffusion stream 2 % (maximum).</abstract>

<article-title>A Balance of Total Water Content during the Smoking of a Cigarette. 2nd Report / Über den Verbleib des Wassers beim Abrauchen: 2. Mitteilung</article-title>

A Balance of Total Water Content during the Smoking of a Cigarette. 2nd Report / Über den Verbleib des Wassers beim Abrauchen: 2. Mitteilung

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Contributions to Tobacco and Nicotine Research ist in den folgenden Services indiziert: <ul> <li> Baidu Scholar </li> <li> Biobase </li> <li> CABI (over 50 subsections) </li> <li> Chemical Abstracts Service (CAS) - CAplus </li> <li> Chemical Abstracts Service (CAS) - SciFinder </li> <li> CNKI Scholar (China National Knowledge Infrastructure) </li> <li> CNPIEC - cnpLINKer </li> <li> Dimensions </li> <li> DOAJ (Directory of Open Access Journals) </li> <li> EBSCO </li> <li> ExLibris </li> <li> Genamics JournalSeek </li> <li> Google Scholar </li> <li> Japan Science and Technology Agency (JST) </li> <li> J-Gate </li> <li> JournalGuide </li> <li> JournalTOCs </li> <li> KESLI-NDSL (Korean National Discovery for Science Leaders) </li> <li> MyScienceWork </li> <li> Naver Academic </li> <li> Naviga (Softweco) </li> <li> ProQuest </li> <li> Publons </li> <li> QOAM (Quality Open Access Market) </li> <li> ReadCube </li> <li> SCImago (SJR) </li> <li> SCOPUS </li> <li> Semantic Scholar </li> <li> TDNet </li> <li> Ulrich's Periodicals Directory/ulrichsweb </li> <li> WanFang Data </li> <li> WorldCat (OCLC) </li> <li> X-MOL </li> </ul>

Advisory Board　　　 Bernhard Eitzinger, delfortgroup AG, Traun, Austria Ernest Groman, University of Vienna, Vienna, Austria Daniel Heck, HeckTox LLC, Greensboro, NC, USA Anne Fisher, University of Kentucky, Lexington, KY, USA Xie Jianping, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China Hubert Klus, St. Pölten, Austria John H. Lauterbach, Lauterbach &amp; Associates LLC, Macon, GA, USA Ramsey Lewis, North Carolina State University, Raleigh, NC, USA Chuan Liu, Southampton, UK Michael W. Ogden, Ogden Ology, LLC, Lewisville, NC, USA Thilo Paschke, Japan Tobacco International SA, Geneva, Switzerland Stephen W. Purkis, Bristol, UK Elmar Richter, Walther Straub Institute, Department of Toxicology, Ludwig-Maximilians-University, Munich, Germany Wolfram Roeper, Hamburg, Germany Wolfgang Trinkies, Bayreuth, Germany　 Andreas Zemann, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria Editors Wolf-Dieter Heller Gerhard Scherer Editorial Office Barbara Boenke Brigitte Müller Anja Thielen Contact <A href="mailto:editors@beitraege-bti.de">editors@beitraege-bti.de</A> Publisher De Gruyter Poland Bogumiła Zuga 32A Str. 01-811 Warsaw, Poland T: +48 22 701 50 15

<DIV align=left> Please submit your manuscripts to Contributions to Tobacco and Nicotine Research via Editorial Manager system to: <A href="http://www.editorialmanager.com/btfi">www.editorialmanager.com/btfi</A> Open Access License Dieses Werk ist lizenziert unter einer <A href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Namensnennung - Nicht-kommerziell - Weitergabe unter gleichen Bedingungen 4.0 International Lizenz</A> (CC BY-NC-SA 4.0). Autoren, die in dieser Zeitschrift veröffentlichen, behalten alle Urheberrechte und stimmen den Bedingungen der oben genannten CC BY-NC-SA 4.0-Lizenz zu. </DIV>

Please submit your manuscripts to Contributions to Tobacco and Nicotine Research via Editorial Manager system to: <A href="http://www.editorialmanager.com/btfi">www.editorialmanager.com/btfi</A> Open Access Statement The journal is an Open Access journal that allows a free unlimited access to all its contents without any restrictions upon publication to all users. Copyright Policy All publications are licensed under a <A href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</A> (CC BY-NC-SA 4.0). Authors who publish with this journal retain all copyrights and agree to the terms of the above-mentioned CC BY-NC-SA 4.0 license. Article Processing Changes To publish in CTNR, authors are not required to pay an Article Processing Charge

Contributions to Tobacco and Nicotine Research (formerly: Beiträge zur Tabakforschung International / Contribution to Tobacco Research International) publishes articles with a focus on tobacco, nicotine, and related consumer products. In addition, all aspects of research on the tobacco plant as well as on product technology and manufacturing are relevant for the Journal. Products of interest comprise (i) combustible tobacco products (cigarettes, cigars, pipes, etc.), (ii) smokeless tobacco (SLT) products (snuff, snus, chewing tobacco, etc.), (iii) tobacco heating products (THP), (iv) electronic cigarettes (e-cigs, w/o nicotine), (v) oral nicotine delivery (OND) products. All scientific investigations on product-related properties (including physical, chemical, biological, and toxicological properties) as well as on the influence on consumers’ behavior and response (including acute and long-term product use patterns and biomarker profiles) are considered for publication. Submissions can be of the following types: original investigations, reviews, short reports commentaries, letters to the editor. Fields covered by the Journal <UL> <LI>Research into the tobacco plant </LI> <UL> <LI>Tobacco plant </LI> <LI>Metabolism </LI> <LI>Cultivation </LI> <LI>Pesticides Biotechnology (Plant pathology, Mycology, Microbiology) </LI> </UL></UL> <UL> <LI>Manufacture of tobacco products </LI> <UL> <LI>Processing of tobacco </LI> <LI>Flavor </LI> <LI>Manufacture of cigarettes and other products </LI> <LI>Tobacco and environment </LI> <LI>Chemical engineering including physical chemistry </LI> </UL></UL> <UL> <LI>Analysis and properties of tobacco smoke </LI> <UL> <LI>Physical properties </LI> <LI>Chemical properties </LI> <LI>Combustion studies </LI> <LI>Mainstream/sidestream smoke </LI> <LI>Filter studies </LI> <LI>Special substances </LI> <LI>Analytical methods </LI> <LI>Machine smoking </LI> </UL></UL> <UL> <LI>Tobacco products other than cigarettes </LI> <UL> <LI>Cigars / cigarillos </LI> <LI>Pipe tobacco </LI> <LI>Smokeless tobacco (SLT) products (snuff, snus, chewing tobacco) </LI></UL> <LI>New products </LI> <UL> <LI>Tobacco heating products (THP) </LI> <LI>Electronic cigarettes (e-cigs, w/o nicotine) </LI> <LI>Oral nicotine devices (OND, e.g., nicotine pouches) </LI> </UL></UL> <UL> <LI>Human smoking behavior </LI> <UL> <LI>Biomonitoring </LI> <LI>Consumer behavior </LI></UL></UL> Open Access Statement The journal is an Open Access journal that allows a free unlimited access to all its contents without any restrictions upon publication to all users. Archiving Sciendo archives the contents of this journal in <A href="https://www.portico.org/">Portico</A> - digital long-term preservation service of scholarly books, journals and collections. Plagiarism Policy The editorial board is participating in a growing community of <A href="https://www.crossref.org/services/similarity-check/">Similarity Check System's</A> users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process.

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Contributions to Tobacco & Nicotine Research

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Volumen 3 (1966): Edición 7 (November 1966)

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