Determination of the major groups of phytoplankton pigments from the absorption spectra of total particulate matter

1993 ◽  
Vol 98 (C12) ◽  
pp. 22789 ◽  
Author(s):  
Nicolas Hoepffner ◽  
Shubha Sathyendranath
Keyword(s):  
Particulate Matter ◽  
Absorption Spectra ◽  
Total Particulate Matter ◽  
Phytoplankton Pigments

Determination of Total Particulate Matter, Nicotine, and Water in Cigarette Smoke

1962 ◽  
Vol 45 (3) ◽  
pp. 540-545
Author(s):  
C L Ogg ◽  
W W Bates ◽  
E C Cogbill ◽  
R H Blackmore ◽  
E L Petersen
Keyword(s):  
Particulate Matter ◽  
Cigarette Smoke ◽  
Total Particulate Matter

scholarly journals Determination of Benzene and Toluene In Exhaled Cigarette Smoke

2008 ◽  
Vol 23 (2) ◽  
pp. 107-114 ◽  
Author(s):  
S Moldoveanu ◽  
W III Coleman ◽  
J Wilkins
Keyword(s):  
Particulate Matter ◽  
Cigarette Smoke ◽  
Vapor Phase ◽  
Aromatic Hydrocarbons ◽  
Federal Trade Commission ◽  
Particulate Phase ◽  
Total Particulate Matter ◽  
Retention Efficiency ◽  
Lower Limits

AbstractThis study describes the results regarding the evaluation of retention efficiency by humans of benzene and toluene from cigarette smoke. The evaluated cigarette was a common commercial cigarette with 10.6 mg ‘tar’ [U.S. Federal Trade Commission (FTC) ‘tar’ is defined as the weight of total particulate matter minus nicotine and water]. The test was performed on ten subjects. The exhaled smoke was collected using a vacuum assisted technique that avoids strain in exhaling the smoke. The study showed that benzene was retained at levels of 89% to 98%, and toluene was retained at similar levels, between 87% and 99%. The lower limits of retention for both benzene and toluene are unexpectedly low compared to the retention of bi-and tricyclic aromatic hydrocarbons, which have retentions from cigarette smoke above 95%. This is probably caused by the fact that monocyclic aromatic hydrocarbons are present practically only in the vapor phase of cigarette smoke and at considerably higher levels than bi- and tri-cyclic aromatic hydrocarbons which are present almost completely in the particulate phase of cigarette smoke.

scholarly journals Determination of Transition Metals in Cigarette Smoke Condensate by Solvent Extraction and Atomic Absorption Spectroscopy

1974 ◽  
Vol 7 (5) ◽  
Author(s):  
G.P. Morie ◽  
P.E. Morrisett
Keyword(s):  
Particulate Matter ◽  
Transition Metals ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Total Particulate Matter

AbstractA method for the determination of trace transition metals in cigarette smoke is described. The smoke particulate matter is digested in nitric acid, the acid is neutralized, and metal ions are complexed with ammonium 1-pyrrolidinecarbodithioate and extracted with methyl isobutyl ketone. The metals are then determined in the organic solvent by atomic absorption spectroscopy. The sensitivity of the method is enhanced by the use of the methyl isobutyl ketone extraction. The method was evaluated for the determination of manganese, copper, iron, and zinc in the total particulate matter of smoke from University of Kentucky reference cigarettes and from commercial cigarettes. The amounts of these metals found in the smoke of a typical commercial filter cigarette are: 0.04 µg Mn, 0.10 µg Cu, 0.8 µg Fe, and 0.6 µg Zn. The method was used to show that cellulose acetate cigarette filters remove about the same percentage of metals as total particulate matter from smoke

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