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Informacje o czasopiśmie
Format
Czasopismo
eISSN
2719-9509
Pierwsze wydanie
01 Jan 1992
Częstotliwość wydawania
4 razy w roku
Języki
Angielski

Wyszukiwanie

Tom 1 (1962): Zeszyt 9 (December 1962)

Informacje o czasopiśmie
Format
Czasopismo
eISSN
2719-9509
Pierwsze wydanie
01 Jan 1992
Częstotliwość wydawania
4 razy w roku
Języki
Angielski

Wyszukiwanie

10 Artykułów
Otwarty dostęp

Gas Chromatography in Tobacco Smoke of Cigarettes. Part 2: Refined Resolution by Use of Golay Columns / Zur Gaschromatographie des Cigarettenrauches. 2. Teil: Verfeinerte Trennung mit Hilfe von Kapillarkolonnen

Data publikacji: 28 May 2014
Zakres stron: 315 - 323

Abstrakt

Abstract

Gas chromatographic resolution of the vapour phase of cigarette smoke has been refined by use of Golay columns. Constituents such as butenone, different nitriles and a few others were identified. Estimated amounts for 38 assured or probable constituents are listed. The findings were applied to study the differences in vapour composition between smoke from normal and from extracted cigarettes, as well as from cigarette paper.

Otwarty dostęp

A New Method for the Determination of 3,4-Benzopyrene in Tobacco Smoke Condensates / Eine neue Methode zur Bestimmung des 3,4-Benzpyrens in Tabakrauchkondensaten

Data publikacji: 28 May 2014
Zakres stron: 326 - 329

Abstrakt

Abstract

A new method for the determination of 3,4-benzopyrene in tobacco smoke condensates is described. The procedure is relatively simple and as reproducible as other methods.

Otwarty dostęp

The Temperature of the Mainstream Smoke in the Cigarette Butt during Smoking / Temperaturverlauf des Hauptrauches im Cigarettenstummel während des Rauchens

Data publikacji: 28 May 2014
Zakres stron: 330 - 334

Abstrakt

Abstract

The temperature of the mainstream smoke, measured in the cigarette butt, is practically not influenced by differences in brand, type, equipment or position of the cigarette during smoking. During the process of smoking the average temperature in the butt equals the average room temperature and does hardly exceed 30°C provided that a butt length of about 23 mm is left. If smoking is continued to shorter butts radiant heat from the glowing zone can bring the temperature up to a maximum of 75°C within a range of 0.5 cm.

Otwarty dostęp

The Collection of the Particle Phase of Tobacco Smoke in Liquids / Zur Niederschlagung von Tabakrauch in Flüssigkeiten

Data publikacji: 28 May 2014
Zakres stron: 335 - 336

Abstrakt

Abstract

The apparatus for collecting the particle phase of tobacco smoke in liquids described by us in one of the preceding editions has been modified and can now be used for analytical purposes.

Otwarty dostęp

Results of a Collaborative Examination on the Water Content of Tobacco / Ergebnisse der Ringuntersuchung zur Feuchtigkeitsbestimmung

Data publikacji: 28 May 2014
Zakres stron: 337 - 341

Abstrakt

Abstract

A collaborative examination of the water determination by azeotropic distillation with benzene has been undertaken on the model system paper plus added water, in order to establish whether this method can be used as a reference method for the water determination in tobacco. It has been found that the accuracy of the method, expressed by the amount of added water recovered by distillation, is excellent and independent of the laboratory conducting the trial. Its precision, measured by the mean standard deviation, is in general lower than 0.05 ml, but may vary considerably between the laboratories.

Otwarty dostęp

Determination of the Tobacco Humidity: Comparison of the Azeotropic Benzene Distillation with Oven Drying / Zur Bestimmung der Feuchtigkeit im Tabak: Vergleich zwischen der Azeotropen Destillation mit Benzol und der Trocknung im Ofen

Data publikacji: 28 May 2014
Zakres stron: 342 - 345

Abstrakt

Abstract

Two methods of determination of the tobacco humidity - oven drying and azeotropic distillation with benzene - have been compared. The precision of the latter method had been formerly established on a model system of paper plus added water; it is shown that the precision is the same when the method is applied on tobacco.

Otwarty dostęp

Determination of the Specific Heat of Tobacco / Die spezifische Wärme von Tabak

Data publikacji: 28 May 2014
Zakres stron: 346 - 352

Abstrakt

Abstract

The method described is suitable for determining the specific heat of tobacco. The necessary equipment is available in all laboratories.

Otwarty dostęp

A Method for the Preparation of Thin Cross Sections of Cigarettes / Eine Methode zur Herstellung von Dünnschnitten an Cigaretten

Data publikacji: 28 May 2014
Zakres stron: 353 - 357

Abstrakt

Abstract

A procedure is described by which thin cross and longitudinal sections of cigarettes and cigars can be prepared for microscopic investigation without changing the original arrangement of the tobacco fibres.

Otwarty dostęp

An Automatic Ballance Developed by Mettler for Sorting and Classifying Cigarettes / Kontrollwägeautomat der Firma Mettler für die Klassierung und Selektion von Cigaretten

Data publikacji: 28 May 2014
Zakres stron: 358 - 366

Abstrakt

Abstract

The present paper describes an automatic balance for the sorting and classification of cigarettes as developed by the collaboration of Mettler with the Brinkmann laboratories. The principle and the construction of the balance are described. The results shown permit a detailed discussion leading to the conclusion that the described automatic balance is a satisfactory instrument for the quality control in cigarette factories.

Otwarty dostęp

A New Method for the Determination of Cigarette Paper Porosity and Ventilation / Neue Methoden zur Messung der Porosität von Cigarettenpapier und des Ventilationsgrades von Cigaretten

Data publikacji: 28 May 2014
Zakres stron: 367 - 382

Abstrakt

Abstract

New methods and the necessary equipment are described by which the porosity of relatively long strips of cigarette paper can be determined in a rapid and simple way. For the first time, the percentage of the total puff volume penetrating through the cigarette paper can be measured directly. The authors give several examples of application and at the same time they describe two new methods for determining the by-passing air.

10 Artykułów
Otwarty dostęp

Gas Chromatography in Tobacco Smoke of Cigarettes. Part 2: Refined Resolution by Use of Golay Columns / Zur Gaschromatographie des Cigarettenrauches. 2. Teil: Verfeinerte Trennung mit Hilfe von Kapillarkolonnen

Data publikacji: 28 May 2014
Zakres stron: 315 - 323

Abstrakt

Abstract

Gas chromatographic resolution of the vapour phase of cigarette smoke has been refined by use of Golay columns. Constituents such as butenone, different nitriles and a few others were identified. Estimated amounts for 38 assured or probable constituents are listed. The findings were applied to study the differences in vapour composition between smoke from normal and from extracted cigarettes, as well as from cigarette paper.

Otwarty dostęp

A New Method for the Determination of 3,4-Benzopyrene in Tobacco Smoke Condensates / Eine neue Methode zur Bestimmung des 3,4-Benzpyrens in Tabakrauchkondensaten

Data publikacji: 28 May 2014
Zakres stron: 326 - 329

Abstrakt

Abstract

A new method for the determination of 3,4-benzopyrene in tobacco smoke condensates is described. The procedure is relatively simple and as reproducible as other methods.

Otwarty dostęp

The Temperature of the Mainstream Smoke in the Cigarette Butt during Smoking / Temperaturverlauf des Hauptrauches im Cigarettenstummel während des Rauchens

Data publikacji: 28 May 2014
Zakres stron: 330 - 334

Abstrakt

Abstract

The temperature of the mainstream smoke, measured in the cigarette butt, is practically not influenced by differences in brand, type, equipment or position of the cigarette during smoking. During the process of smoking the average temperature in the butt equals the average room temperature and does hardly exceed 30°C provided that a butt length of about 23 mm is left. If smoking is continued to shorter butts radiant heat from the glowing zone can bring the temperature up to a maximum of 75°C within a range of 0.5 cm.

Otwarty dostęp

The Collection of the Particle Phase of Tobacco Smoke in Liquids / Zur Niederschlagung von Tabakrauch in Flüssigkeiten

Data publikacji: 28 May 2014
Zakres stron: 335 - 336

Abstrakt

Abstract

The apparatus for collecting the particle phase of tobacco smoke in liquids described by us in one of the preceding editions has been modified and can now be used for analytical purposes.

Otwarty dostęp

Results of a Collaborative Examination on the Water Content of Tobacco / Ergebnisse der Ringuntersuchung zur Feuchtigkeitsbestimmung

Data publikacji: 28 May 2014
Zakres stron: 337 - 341

Abstrakt

Abstract

A collaborative examination of the water determination by azeotropic distillation with benzene has been undertaken on the model system paper plus added water, in order to establish whether this method can be used as a reference method for the water determination in tobacco. It has been found that the accuracy of the method, expressed by the amount of added water recovered by distillation, is excellent and independent of the laboratory conducting the trial. Its precision, measured by the mean standard deviation, is in general lower than 0.05 ml, but may vary considerably between the laboratories.

Otwarty dostęp

Determination of the Tobacco Humidity: Comparison of the Azeotropic Benzene Distillation with Oven Drying / Zur Bestimmung der Feuchtigkeit im Tabak: Vergleich zwischen der Azeotropen Destillation mit Benzol und der Trocknung im Ofen

Data publikacji: 28 May 2014
Zakres stron: 342 - 345

Abstrakt

Abstract

Two methods of determination of the tobacco humidity - oven drying and azeotropic distillation with benzene - have been compared. The precision of the latter method had been formerly established on a model system of paper plus added water; it is shown that the precision is the same when the method is applied on tobacco.

Otwarty dostęp

Determination of the Specific Heat of Tobacco / Die spezifische Wärme von Tabak

Data publikacji: 28 May 2014
Zakres stron: 346 - 352

Abstrakt

Abstract

The method described is suitable for determining the specific heat of tobacco. The necessary equipment is available in all laboratories.

Otwarty dostęp

A Method for the Preparation of Thin Cross Sections of Cigarettes / Eine Methode zur Herstellung von Dünnschnitten an Cigaretten

Data publikacji: 28 May 2014
Zakres stron: 353 - 357

Abstrakt

Abstract

A procedure is described by which thin cross and longitudinal sections of cigarettes and cigars can be prepared for microscopic investigation without changing the original arrangement of the tobacco fibres.

Otwarty dostęp

An Automatic Ballance Developed by Mettler for Sorting and Classifying Cigarettes / Kontrollwägeautomat der Firma Mettler für die Klassierung und Selektion von Cigaretten

Data publikacji: 28 May 2014
Zakres stron: 358 - 366

Abstrakt

Abstract

The present paper describes an automatic balance for the sorting and classification of cigarettes as developed by the collaboration of Mettler with the Brinkmann laboratories. The principle and the construction of the balance are described. The results shown permit a detailed discussion leading to the conclusion that the described automatic balance is a satisfactory instrument for the quality control in cigarette factories.

Otwarty dostęp

A New Method for the Determination of Cigarette Paper Porosity and Ventilation / Neue Methoden zur Messung der Porosität von Cigarettenpapier und des Ventilationsgrades von Cigaretten

Data publikacji: 28 May 2014
Zakres stron: 367 - 382

Abstrakt

Abstract

New methods and the necessary equipment are described by which the porosity of relatively long strips of cigarette paper can be determined in a rapid and simple way. For the first time, the percentage of the total puff volume penetrating through the cigarette paper can be measured directly. The authors give several examples of application and at the same time they describe two new methods for determining the by-passing air.

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