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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 2 (1963): Zeszyt 2 (June 1963)

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

Wyszukiwanie

3 Artykułów
Otwarty dostęp

Adsorption Capacity of Cigarette Filters for Phenols from the Smoke / Die Filtration von Phenolen aus Cigarettenrauch

Data publikacji: 28 May 2014
Zakres stron: 51 - 66

Abstrakt

Abstract

The following points were established by smoking experiments and screening tests using an inert gas phase with phenol for testing the adsorption capacity of filter materials. 1.Secondary cellulose acetate filters of commercial cigarettes exhibit an adsorption capacity for phenols from the smoke in the range of 60 to 72 per cent. Of this adsorptive capacity, approximately one half may be considered as specific adsorption of phenols as defined in text.2.Increased ''selective'' adsorption for phenols is obtained when polyethylene glycol is dusted on filter fibers of cellulose secondary acetate. When cellulose secondary acetate fiber is dusted with secondary acetate powder the removal of both phenol and particulate matter is increased significantly. 3.A cellulose triacetate with a grainy surface is superior to cellulose acetates with regular surfaces as a phenol adsorbing filter.4.Plasticizers improve phenol adsorption capacity. With the passage of time, diffusion and other yet undefined effects lessen their value. Suggestions have been made in terms of fiber structure and use of plasticizers which can lead to further improvement of filters in respect to phenol removal. It is possible to reduce the phenol in cigarette smoke up to 90 per cent through the use of selected filter fibers and plasticizers.5.The amounts of particulate matter and phenol released during the smoking of three equal (20 mm) sections of filter and non-filter cigarettes were determined in the mainstream smoke. When a filter cigarette is smoked down, increasing amounts of phenol are released from the tobacco and the ''selective'' adsorption of phenol by secondary cellulose acetate filter increases

Otwarty dostęp

Discussion of a Study on the Adsorption Capacity of Cigarette Filters for Phenols / Betrachtungen zu einer Arbeit über die Phenolretention in Cigarettenfiltern

Data publikacji: 28 May 2014
Zakres stron: 67 - 72

Abstrakt

Abstract

In two papers, Hoffmann and Wynder have described an analytical method for the quantitative determination of some phenols in the smoke of cigarettes. An application on cigarette filters permitted the statement that these filters may selectively retain phenols from the smoke. It is shown here that the analytical method has a limited precision and accuracy, sufficient to ascertain the effect of selectivity, but insufficient to detect relatively small differences between filters of similar retention capacity. It is shown that the interpretation of the results given by Hoffmann and Wynder is facilitated through the introduction of the notion of ''relative phenol retention'', i. e. the quotient of the ''phenol retention" to the ''T. P. M. retention'', whereas the ''selective phenol reduction". i. e. the arithmetic difference between these two criterions, is inapt to express the capacity of specific selectivity of a given filter, especially if the pressure drop of this latter is unknown. When classifying the filters studied by Hoffmann and Wynder according to their "relative phenol retention'', one arrives at different conclusions than these authors.

Otwarty dostęp

Quantitative Determination of Phenols in Tobacco Smoke by means of 4-Aminoantipyrine (AAP) / Quantitative Bestimmung von Phenolen im Tabakrauch mit 4-Aminoantipyrin (AAP)

Data publikacji: 28 May 2014
Zakres stron: 73 - 78

Abstrakt

Abstract

The present paper describes a new method for the determination of phenols contained in tobacco smoke condensates by means of 4-aminoantipyrine. The procedure can be reproduced without difficulties and is suitable for routine estimations

3 Artykułów
Otwarty dostęp

Adsorption Capacity of Cigarette Filters for Phenols from the Smoke / Die Filtration von Phenolen aus Cigarettenrauch

Data publikacji: 28 May 2014
Zakres stron: 51 - 66

Abstrakt

Abstract

The following points were established by smoking experiments and screening tests using an inert gas phase with phenol for testing the adsorption capacity of filter materials. 1.Secondary cellulose acetate filters of commercial cigarettes exhibit an adsorption capacity for phenols from the smoke in the range of 60 to 72 per cent. Of this adsorptive capacity, approximately one half may be considered as specific adsorption of phenols as defined in text.2.Increased ''selective'' adsorption for phenols is obtained when polyethylene glycol is dusted on filter fibers of cellulose secondary acetate. When cellulose secondary acetate fiber is dusted with secondary acetate powder the removal of both phenol and particulate matter is increased significantly. 3.A cellulose triacetate with a grainy surface is superior to cellulose acetates with regular surfaces as a phenol adsorbing filter.4.Plasticizers improve phenol adsorption capacity. With the passage of time, diffusion and other yet undefined effects lessen their value. Suggestions have been made in terms of fiber structure and use of plasticizers which can lead to further improvement of filters in respect to phenol removal. It is possible to reduce the phenol in cigarette smoke up to 90 per cent through the use of selected filter fibers and plasticizers.5.The amounts of particulate matter and phenol released during the smoking of three equal (20 mm) sections of filter and non-filter cigarettes were determined in the mainstream smoke. When a filter cigarette is smoked down, increasing amounts of phenol are released from the tobacco and the ''selective'' adsorption of phenol by secondary cellulose acetate filter increases

Otwarty dostęp

Discussion of a Study on the Adsorption Capacity of Cigarette Filters for Phenols / Betrachtungen zu einer Arbeit über die Phenolretention in Cigarettenfiltern

Data publikacji: 28 May 2014
Zakres stron: 67 - 72

Abstrakt

Abstract

In two papers, Hoffmann and Wynder have described an analytical method for the quantitative determination of some phenols in the smoke of cigarettes. An application on cigarette filters permitted the statement that these filters may selectively retain phenols from the smoke. It is shown here that the analytical method has a limited precision and accuracy, sufficient to ascertain the effect of selectivity, but insufficient to detect relatively small differences between filters of similar retention capacity. It is shown that the interpretation of the results given by Hoffmann and Wynder is facilitated through the introduction of the notion of ''relative phenol retention'', i. e. the quotient of the ''phenol retention" to the ''T. P. M. retention'', whereas the ''selective phenol reduction". i. e. the arithmetic difference between these two criterions, is inapt to express the capacity of specific selectivity of a given filter, especially if the pressure drop of this latter is unknown. When classifying the filters studied by Hoffmann and Wynder according to their "relative phenol retention'', one arrives at different conclusions than these authors.

Otwarty dostęp

Quantitative Determination of Phenols in Tobacco Smoke by means of 4-Aminoantipyrine (AAP) / Quantitative Bestimmung von Phenolen im Tabakrauch mit 4-Aminoantipyrin (AAP)

Data publikacji: 28 May 2014
Zakres stron: 73 - 78

Abstrakt

Abstract

The present paper describes a new method for the determination of phenols contained in tobacco smoke condensates by means of 4-aminoantipyrine. The procedure can be reproduced without difficulties and is suitable for routine estimations

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