Glutathione and cysteines suppress cytotoxicity of gas phase of cigarette smoke by direct reacting with unsaturated carbonyl compounds in the gas phase

2019 ◽  
Vol 509 (4) ◽  
pp. 988-993 ◽  
Author(s):  
Tsunehito Higashi ◽  
Enas Elmeligy ◽  
Yosuke Mai ◽  
Yoichi Noya ◽  
Koji Terada ◽  
...  
Keyword(s):  
Gas Phase ◽  
Cigarette Smoke ◽  
Carbonyl Compounds

The Spectrophotometric Determination of Formaldehyde in Whole Smoke/Eine spektralphotometrische Methode zur Bestimmung von Formaldehyd im Vollrauch von Cigaretten

1971 ◽  
Vol 6 (1) ◽  
Author(s):  
H.P. Stauffer ◽  
J. Bourquin
Keyword(s):  
Gas Phase ◽  
Cigarette Smoke ◽  
Carbonyl Compounds ◽  
Ammonium Ion ◽  
Buffer Solution ◽  
Simple Method ◽  
Different Types ◽  
Volatile Aldehydes ◽  
Whole Smoke

AbstractThe quantitative determination of formaldehyde in the gas phase of cigarette smoke does not permit any conclusion about the actual level in whole smoke. This is due to the fact that a Cambridge filter charged with smoke condensate absorbs up to 50 % of the volatile aldehydes from the gas phase. A simple method is presented making possible the estimation of formaldehyde in whole cigarette smoke. The procedure is based on the Hantzsch reaction between formaldehyde, acetylacetone and ammonium ion in an aqueous buffer solution. The reaction product, 3,5-diacetyl1,4-dihydrolutidine, has an absorption maximum at 412 nm and is measured spectrophotometrically. The operations are simple and there are no separation steps required. Reproducibility is excellent and interference by other carbonyl compounds can be neglected. Acetaldehyde in concentrations 10 times higher than formaldehyde interferes to less than 1 %. Different types of cigarettes have been analysed with respect to their delivery of formaldehyde. Values found range from 40 to 90 µg per cigarette. The concentrations found in whole smoke are significantly higher than the values cited in the Iiterature for gas phase formaldehyde

scholarly journals A Standardized Method for the Preparation of a Gas Phase Extract of Cigarette Smoke

2016 ◽  
Vol 39 (6) ◽  
pp. 898-902 ◽  
Author(s):  
Tsunehito Higashi ◽  
Yosuke Mai ◽  
Yuichi Mazaki ◽  
Takahiro Horinouchi ◽  
Soichi Miwa
Keyword(s):  
Gas Phase ◽  
Cigarette Smoke ◽  
Standardized Method

Ciliastatic Components in the Gas Phase of Cigarette Smoke

Science ◽  
1966 ◽  
Vol 153 (3741) ◽  
pp. 1248-1250 ◽  
Author(s):  
T. R. Walker ◽  
J. E. Kiefer
Keyword(s):  
Gas Phase ◽  
Cigarette Smoke

scholarly journals The Determination of Nitric Oxide in Gas Phase Cigarette Smoke by Non-dispersive Infrared Analysis

1980 ◽  
Vol 10 (2) ◽  
Author(s):  
T. B. Williams
Keyword(s):  
Nitric Oxide ◽  
Gas Phase ◽  
Cigarette Smoke ◽  
Relative Error ◽  
Dead Volume ◽  
High Yield ◽  
Infrared Analysis ◽  
Colorimetric Analysis ◽  
Standard Gas

AbstractNitric oxide in cigarette smoke was conveniently determined by non-dispersive infrared analysis (NDIR). Recoveries of 95 % were obtained with standard gas-air mixtures but recoveries from smoke increased from 87% for high-yield to 91 % for low-yield cigarettes. Relative error was about 4 %. A reduction in the dead volume of Cambridge filter cassettes, to reduce the amount of NO reacted between puffs, increased NO deliveries of cigarettes by 4%. Deliveries of NO were estimated to average 4 % lower due to oxidation, but reaction with other smoke components reduced them further depending upon concentrations. The NO deliveries of cigarettes increased as blend nitrate increased and as the flow of air around cigarettes decreased. Nitric oxide in smoke and in standard gas-air mixtures, determined by non-dispersive infrared (NDIR) spectroscopy, was substantiated by an automated colorimetric analysis. Interfering smoke species were determined and circumvented in both methods.

scholarly journals Determination of Trace Metals in Cigarette Smoke by Flameless Atomic Absorption Spectrometry

1978 ◽  
Vol 9 (4) ◽  
Author(s):  
M. A. Perinelli ◽  
N. Carugno
Keyword(s):  
Trace Metals ◽  
Atomic Absorption ◽  
Gas Phase ◽  
Cigarette Smoke ◽  
Absorption Spectrometry ◽  
Total Particulate Matter ◽  
Flameless Atomic Absorption ◽  
Flameless Atomic Absorption Spectrometry ◽  
Quick Determination

Abstract A flameless atomic absorption method has been developed which permits the quick determination of the levels of trace metals in cigarette smoke. The total particulate matter (TPM) was collected by electrostatic precipitation and dissolved in methanol before analysis. In order to trap the last remaining traces of metals, the gas phase was passed through microporous filters which were analysed direct. The sensitivity of this method for the metals studied (Zn, Pb, Cd, Ni) is good in both the particulate and gas phase samples, with the sole exception of Ni in the gas phase. Results obtained by the flame and flameless methods are compared.

Kurzzeitpyrolyse, VI Ringverengungen durch CO-Eliminierung aus cyclischen Carbonylverbindungen / Short Time Pyrolysis, VI Ring Contractions by CO-Elimination from Cyclic Carbonyl Compounds

1977 ◽  
Vol 32 (7) ◽  
pp. 805-806 ◽  
Author(s):  
Gerhard Schaden
Keyword(s):  
Gas Phase ◽  
Carbonyl Compounds ◽  
One Step ◽  
Short Time

An one-step synthesis of benzocyclobutene (2) by gas-phase pyrolysis of indane-2-one (1) has been found. By the same method indane-1-one (3) and naphthoquinone(1,4) (5) gave indene-1 -one (4) and fluorene-9-one (7) formed biphenylene (8).

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