scholarly journals Aromatic compounds secreted by plants of the genus Citrus L. in greenhouse conditions

2021 ◽  
Vol 66 (3) ◽  
pp. 312-319
Author(s):  
N. V. Hetka ◽  
E. V. Ateslenko ◽  
R. V. Kulyan ◽  
V. P. Suboch ◽  
V. V. Titok
Keyword(s):  
Gas Phase ◽  
Aromatic Compounds ◽  
Citrus Limon ◽  
Caryophyllene Oxide ◽  
Aromatic Plants ◽  
Genetic Affinity ◽  
Sweet Lime ◽  
Method Analysis ◽  
Citrus Limetta ◽  
Citrus Aurantiifolia

Using the GC/MS method analysis of the chemical composition of aromatic volatile compounds released by the leaves of tropical representatives of the genus Citrus L. (sweet lime (limetta) - Citrus limetta Risso and its varieties: Citrus limetta ‘Marokko', Citrus limetta ‘Kislaya oranzhevaya', sour lime - Citrus aurantiifolia ‘Taiti' and Citrus aurantiifolia ‘Foro', as well as lemon - Citrus limon ‘Beskolyuchii') in greenhouse conditions were studied. The number of aromatic substances of the gas phase of natural essential oils of leaves revealed for each of them was 38, 41, 37, 44, 37 and 30 compounds, respectively. 10 components were characteristic of all six taxa under study, which confirm their genetic affinity: D-limonene, Z-citral (neral), E-citral (geranial), elemene isomer, α-copaene, trans-α-bergamotene, benzoic acid, 3-hexenyl ester, trans-γ-bisabolene, β-caryophyllene oxide, a-humulene epoxide II. For hybrids and varieties of sweet lime (limetta) and sour lime, 7 more components belonging to the class of terpenoids are also characteristic: oxygen-containing compounds (citronellal, citronellol, citronellyl, β-sinensal) and sesquiterpenes (cadina-3.5-diene, β-caryophyllene, trans-β-bergamotene), as well as a number of individual aromatic substances, characteristic for each of the varieties in the bouquet of their citrus-coniferous aroma of leaves. The studied taxa can be recommended as part of compositions of aromatic plants in interiors for various functional purposes.

Gas phase pyrolysis of coal-related aromatic compounds in a coiled tube flow reactor

Fuel ◽  
1988 ◽  
Vol 67 (3) ◽  
pp. 334-340 ◽  
Author(s):  
Odolphus S.L. Bruinsma ◽  
Peter J.J. Tromp ◽  
Henry J.J. de Sauvage Nolting ◽  
Jacob A. Moulijn
Keyword(s):  
Gas Phase ◽  
Aromatic Compounds ◽  
Flow Reactor ◽  
Tube Flow ◽  
Coiled Tube

scholarly journals Characterization of Volatile Compounds in the Essential Oil of Sweet Lime (Citrus limetta Risso)

2012 ◽  
Vol 72 (2) ◽  
pp. 276-280 ◽  
Author(s):  
Maria C Colecio-Juárez ◽  
Rubria E Rubio-Núnez ◽  
José E Botello-Álvarez ◽  
Gloria M Martinez-González ◽  
José L Navarrete-Bolanos ◽  
...  
Keyword(s):  
Essential Oil ◽  
Volatile Compounds ◽  
Sweet Lime ◽  
Citrus Limetta

scholarly journals Scavenging ratio of polycyclic aromatic compounds in rain and snow at the Athabasca oil sands region

2014 ◽  
Vol 14 (13) ◽  
pp. 19395-19429
Author(s):  
L. Zhang ◽  
I. Cheng ◽  
D. Muir ◽  
J.-P. Charland
Keyword(s):  
Gas Phase ◽  
Aromatic Compounds ◽  
Oil Sands ◽  
Polycyclic Aromatic Compounds ◽  
Particulate Phase ◽  
Athabasca Oil Sands ◽  
Polycyclic Aromatic ◽  
Alkylated Pahs ◽  
Snow Samples ◽  
Air Concentrations

Abstract. Athabasca oil sands industry in northern Alberta, Canada is a possible source of polycyclic aromatic compounds (PACs). Monitored PACs, including polycyclic aromatic hydrocarbons (PAHs), alkylated PAHs, and dibenzothiophenes, in precipitation and in air at three near-source sites in the Fort MacKay and Fort McMurray area during May 2011 to August 2012 were analyzed to generate a database of scavenging (or washout) ratios (Wt) for PACs scavenged by both snow and rain. Median precipitation and air concentrations of parent PAHs over the May 2011 to August 2012 period ranged from 0.3–184.9 (chrysene) ng L−1 and 0.01–3.9 (naphthalene) ng m−3, respectively, which were comparable to literature values. Higher concentrations in precipitation and air were observed for alkylated PAHs and dibenzothiophenes. The median precipitation and air concentrations were 11.3–646.7 (C3-fluoranthene/pyrene) ng L−1 and 0.21–16.9 (C3-naphthalene) ng m−3, respectively, for alkylated PAHs, and 8.5–530.5 (C4-dibenzothiophene) ng L−1 and 0.13–6.6 (C2-dibenzothiophene) ng m−3 for dibenzothiophenes and their alkylated derivatives. Median Wt over the measurement period were 6100–1.1 × 106 from snow scavenging and 350–2.3 × 105 from rain scavenging depending on the PAC species. Median Wt for parent PAHs were within the range of those observed at other urban and suburban locations. But Wt for acenaphthylene in snow samples was 2–7 times higher. Some individual snow and rain samples exceeded literature values by a factor of 10. Wt for benzo(a)pyrene, dibenz(a,h)anthracene, and benzo(g,h,i)perylene in snow samples had reached 107, which is the maximum for PAH snow scavenging ratios reported in literature. From the analysis of data subsets, Wt for particulate-phase dominant PACs were 14–20 times greater than gas-phase dominant PACs in snow samples and 7–20 times greater than gas-phase dominant PACs in rain samples. Wt from snow scavenging was ∼9 times greater than rain scavenging for particulate-phase dominant PACs and 4–9.6 times greater than rain scavenging for gas-phase dominant PACs. Gas-particle fractions of each PAC, particle size distributions of particulate-phase dominant PACs, and Henry's Law constant of gas-phase dominant PACs explained, to a large extent, the different Wt values among the different PACs and precipitation types. This study verified findings from a previous study of Wang et al. (2014) which suggested that snow scavenging is more efficient than rain scavenging of particles for equivalent precipitation amount, and also provided new knowledge on the scavenging of gas-phase PACs by snow and rain.

scholarly journals Removal of Chromium (VI) from Aqueous Solution Using Chemically-Modified Sweet Lime (Citrus limetta) Peels as Adsorbent

2017 ◽  
Vol 36 ◽  
pp. 82-95
Author(s):  
Devi Lal Adhikari ◽  
Ram Lochan Aryal ◽  
Sitaram Bhattarai ◽  
Surendra Kumar Gautam ◽  
Bhoj Raj Poudel
Keyword(s):  
Aqueous Solution ◽  
Full Text ◽  
Chemically Modified ◽  
Chromium Vi ◽  
Sweet Lime ◽  
Citrus Limetta

available with full text

Gas phase pyrolysis of coal-related aromatic compounds in a coiled tube flow reactor

Fuel ◽  
1988 ◽  
Vol 67 (3) ◽  
pp. 327-333 ◽  
Author(s):  
Odolphus S.L. Bruinsma ◽  
Rob S. Geertsma ◽  
Pim Bank ◽  
Jacob A. Moulijn
Keyword(s):  
Gas Phase ◽  
Aromatic Compounds ◽  
Flow Reactor ◽  
Tube Flow ◽  
Coiled Tube

scholarly journals Scavenging ratios of polycyclic aromatic compounds in rain and snow in the Athabasca oil sands region

2015 ◽  
Vol 15 (3) ◽  
pp. 1421-1434 ◽  
Author(s):  
L. Zhang ◽  
I. Cheng ◽  
D. Muir ◽  
J.-P. Charland
Keyword(s):  
Gas Phase ◽  
Aromatic Compounds ◽  
Oil Sands ◽  
Polycyclic Aromatic Compounds ◽  
Particulate Phase ◽  
Athabasca Oil Sands ◽  
Polycyclic Aromatic ◽  
Alkylated Pahs ◽  
Scavenging Ratios ◽  
Snow Samples

Abstract. The Athabasca oil sands industry in northern Alberta, Canada, is a possible source of polycyclic aromatic compounds (PACs). Monitored PACs, including polycyclic aromatic hydrocarbons (PAHs), alkylated PAHs, and dibenzothiophenes (DBTs), in precipitation and in air at three near-source sites in the Fort MacKay and Fort McMurray area during January 2011 to May 2012, were used to generate a database of scavenging ratios (Wt) for PACs scavenged by both snow and rain. Higher concentrations in precipitation and air were observed for alkylated PAHs and DBTs compared to the other PACs. The sums of the median precipitation concentrations over the period of data analyzed were 0.48 μ g L−1 for the 18 PAHs, 3.38 μ g L−1 for the 20 alkylated PAHs, and 0.94 μ g L−1 for the 5 DBTs. The sums of the median air concentrations for parent PAHs, alkylated PAHs, and DBTs were 8.37, 67.26, and 11.83 ng m−3, respectively. Median Wt over the measurement period were 6100 – 1.1 × 106 from snow scavenging and 350 – 2.3 × 105 from rain scavenging depending on the PAC species. Median Wt for parent PAHs were within the range of those observed at other urban and suburban locations, but Wt for acenaphthylene in snow samples were 2–7 times higher compared to other urban and suburban locations. Wt for some individual snow and rain samples exceeded literature values by a factor of 10. Wt for benzo(a)pyrene, dibenz(a,h)anthracene, and benzo(g,h,i)perylene in snow samples had reached 107, which is the maximum for PAH snow scavenging ratios reported in the literature. From the analysis of data subsets, Wt for particulate-phase dominant PACs were 14–20 times greater than gas-phase dominant PACs in snow samples and 7–20 times greater than gas-phase dominant PACs in rain samples. Wt from snow scavenging were ~ 9 times greater than from rain scavenging for particulate-phase dominant PACs and 4–9.6 times greater than from rain scavenging for gas-phase dominant PACs. Gas-particle fractions of each PAC, particle size distributions of particulate-phase dominant PACs, and the Henry's law constant of gas-phase dominant PACs explained, to a large extent, the different Wt values among the different PACs and precipitation types. The trend in Wt with increasing alkyl substitutions may be attributed to their physico-chemical properties, such as octanol–air and particle partition coefficients and subcooled vapor pressure, which increases gas-particle partitioning and, subsequently, the particulate mass fraction. This study verified findings from a previous study of Wang et al. (2014) that suggested that snow scavenging is more efficient than rain scavenging of particles for equivalent precipitation amounts, and also provided new knowledge of the scavenging of gas-phase PACs and alkylated PACs by snow and rain.

Two-stage ion beam mass spectrometry I. The apparatus and its use to study the reaction of acetylium (CH 3 CO + ) and nitronium (NO + 2 ) ions with aromatic compounds in the gas phase

1974 ◽  
Vol 337 (1610) ◽  
pp. 333-350 ◽  
Keyword(s):  
Electron Transfer ◽  
Gas Phase ◽  
Aromatic Compounds ◽  
Transfer Reaction ◽  
Ion Beam ◽  
Relative Yield ◽  
Electron Transfer Reaction ◽  
Two Stage ◽  
Secondary Ions ◽  
Type C

The construction of a two-stage ion beam mass spectrometer is described. Ions formed by electron impact are focused into a beam which enters a reaction vessel containing neutral molecules at a relatively high pressure. Secondary ions formed by reaction between the primary ion beam and neutral molecules are repelled out at right angles to the primary beam into a conventional magnetic analyser. The instrument was calibrated using the known Ar + + Ar → Ar + Ar + electron transfer reaction. It was then used to study the reaction of acetylium (CH 3 CO + ) and nitronium (NO + 2 ) ions with aromatic compounds. The principal secondary ions were those involving electron transfer from the aromatic nucleus, but in addition ions of the type C 6 H 6 NO + 2 formed by addition of the primary ion to the aromatic compound were detected. However, the relative ‘yield’ of adduct ion from different aromatic compounds showed little correlation with the reactivity of these compounds towards acylation or nitration in solution.

Characterization of aromatic compounds and biological activities of essential oils from Tunisian aromatic plants

2017 ◽  
Vol 12 (2) ◽  
pp. 839-847 ◽  
Author(s):  
Rania Mhiri ◽  
Mona Kchaou ◽  
Sahla Belhadj ◽  
Abdelfattah El Feki ◽  
Noureddine Allouche
Keyword(s):  
Essential Oils ◽  
Aromatic Compounds ◽  
Biological Activities ◽  
Aromatic Plants
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