scholarly journals IMPACT OF AIRCRAFT TRAFFIC EMISSIONS ON OZONE FORMATION AT THE RIO DE JANEIRO URBAN AREA

2007 ◽  
Vol 07 (4) ◽  
pp. 21-30
Author(s):  
C.S. GUIMARÃES ◽  
G. ARBILLA ◽  
S.M. CORRÊA ◽  
L.V. GATTI
Keyword(s):  
Rio De Janeiro ◽  
Ozone Formation ◽  
Flame Ionization Detection ◽  
Downtown Area ◽  
International Airport ◽  
Flame Ionization ◽  
Volatile Organic ◽  
Airport Runway ◽  
Janeiro City ◽  
The U.S

Data for speciated volatile organic compounds (VOC) evaluated in Santos-Dumont Airport and Antonio Carlos Jobim International Airport in Rio de Janeiro, Brazil, are reported. VOC were evaluated by gas chromatography with flame ionization detection (GC – FID) and mass spectrometry (GC – MS), following the U.S. EPA TO – 15 methodology. At Santos-Dumont Airport were quantified 1376 µg m-3 of VOCs 10 m from runway, 408 µg m-3 inside the airport building, and 116 µg m-3 outside the airport area. At the taxiway area of the International Airport a total of 190 µg m-3 of VOC were quantified. Toluene, the most abundant compound near the Santos-Dumont Airport runway, was obtained in a non-significative concentration outside the airport area. This fact suggests that this area is not noticeably impacted by air traffic. A computational model was developed using the OZIPR program and the SAPRC mechanism. Calculated ozone concentrations are higher than values for downtown area of Rio de Janeiro city. Simulated results show that, for the runway in Santos-Dumont Airport, olefins and aromatics contribute in 57% and 15%, respectively, to ozone formation, toluene being the major contributor. Cis-2-butene is the most reactive species regarding OH reaction.

Simultaneous Determination of Volatile Organic Compounds in Commercial Alcoholic Beverages by Gas Chromatography with Flame Ionization Detection

2017 ◽  
Vol 100 (5) ◽  
pp. 1492-1499 ◽  
Author(s):  
Hyung Min Kim ◽  
Gun Yang ◽  
Jung Yoon Kim ◽  
Sang Jun Yoon ◽  
Byong-kyu Shin ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Alcoholic Beverage ◽  
Alcoholic Beverages ◽  
Fast Method ◽  
Flame Ionization Detection ◽  
Ionization Detection ◽  
Flame Ionization ◽  
Volatile Organic

Abstract A simple and fast method was developed for the determination of volatile organic compounds in alcoholic beverages. Eleven volatile organic compounds (acetaldehyde, methanol, 2-propanol, tert-butanol, 1-propanol, ethyl acetate, 2-butanol, isobutanol, 1-butanol, 3-methyl-1butanol, and 2-methyl-1-butanol) in alcoholic beverages were analyzed with a simple direct-injection method using GC with flame ionization detection. These compounds should be monitored in the QC of production processes because they are detrimental to human health. The method was validated with four types of alcoholic beverages (beers, fruit wines, rice wines, and spirits) to confirm the versatility of the method. Linearity showed r2 values from 0.9986 to 0.9995, with LODs ranging from 0.010 to 1.000 mg/L. Precision and accuracy showed acceptable results, proving the effectiveness of the method. The developed method was applied to 40 commercial samples representing the four types of alcoholic beverages, and principal component analysis was performed to determine profiles of the volatile organic compounds, depending on the type of alcoholic beverage.

Survey of Bottled Drinking Water Sold in Canada. Part 2. Selected Volatile Organic Compounds

1993 ◽  
Vol 76 (1) ◽  
pp. 26-31 ◽  
Author(s):  
B Denis Page ◽  
Henry B S Conacher ◽  
John Salminen ◽  
Gerald R Nixon ◽  
Gunther Riedel ◽  
...  
Keyword(s):  
Water Samples ◽  
Mineral Water ◽  
Spring Water ◽  
Mass Spectrometric ◽  
Flame Ionization Detection ◽  
Primary Interest ◽  
Transparent Plastic ◽  
Bottled Drinking Water ◽  
Flame Ionization ◽  
Volatile Organic

Abstract Selected volatile organic compound (VOC) contaminants were determined in 182 samples of retail bottled waters purchased in Canada. Samples included spring water (86) packaged in containers of polyethylene or in smaller containers of transparent plastic or glass, mineral water (61) packaged only in transparent plastic or glass, and miscellaneous bottled waters (35). Analyses were performed by 3 laboratories, each using headspace sampling and capillary gas chromatography with either mass spectrometric (1 laboratory) or flame ionization detection with mass spectrometric confirmation, if required (2 laboratories). Benzene, the contaminant of primary interest, was detected in only 1 of the 182 samples at 2 μg/kg. Other VOC contaminants detected (number of positive samples, average, and range of positives in μg/kg) included toluene (20,6.92,0.5-63), cyclohexane (23, 39.2,3-108), chloroform (12,25.8,3.7-70), and dichloromethane (4,59,22-97). Cyclohexane was found in the plastic and as a migrant from the plastic in 20 samples of spring water, but it was found in only 1 of 61 mineral water samples analyzed at only 3 μg/kg. Chloroform was found almost exclusively in samples that could have been obtained from public water supplies. It was not found in mineral water samples, but it was found in 1 spring water sample at 3.7 μg/kg. The source of the toluene contamination was not known. Other VOCs detected include ethanol and limonene, associated

The Management of Time, Quality and Stakeholders, as Main Variables Applied to Parklets in Rio de Janeiro City

2018 ◽  
Vol 4 (12) ◽  
pp. 1157-1164
Author(s):  
Karina Martins de Souza ◽  
José Luiz Fernandes ◽  
Eduardo Linhares Qualharini
Keyword(s):  
Rio De Janeiro ◽  
Janeiro City
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