Rhamnus frangula Honey: Screening of Volatile Organic Compounds and Their Composition After Short-Term Heating

2015 ◽  
Vol 51 (6) ◽  
pp. 1174-1177 ◽  
Author(s):  
I. Jerkovic ◽  
M. Kranjac ◽  
M. Suste ◽  
P. M. Kus ◽  
L. Svecnjak
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Short Term ◽  
Volatile Organic

scholarly journals Source-Specific Volatile Organic Compounds and Emergency Hospital Admissions for Cardiorespiratory Diseases

2020 ◽  
Vol 17 (17) ◽  
pp. 6210
Author(s):  
Jinjun Ran ◽  
Marianthi-Anna Kioumourtzoglou ◽  
Shengzhi Sun ◽  
Lefei Han ◽  
Shi Zhao ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Hospital Admissions ◽  
Additive Models ◽  
Short Term ◽  
Emergency Hospital ◽  
Emergency Hospital Admissions ◽  
Household Products ◽  
Volatile Organic ◽  
Gasoline Emissions

Knowledge gaps remain regarding the cardiorespiratory impacts of ambient volatile organic compounds (VOCs) for the general population. This study identified contributing sources to ambient VOCs and estimated the short-term effects of VOC apportioned sources on daily emergency hospital admissions for cardiorespiratory diseases in Hong Kong from 2011 to 2014. We estimated VOC source contributions using fourteen organic chemicals by positive matrix factorization. Then, we examined the associations between the short-term exposure to VOC apportioned sources and emergency hospital admissions for cause-specific cardiorespiratory diseases using generalized additive models with polynomial distributed lag models while controlling for meteorological and co-pollutant confounders. We identified six VOC sources: gasoline emissions, liquefied petroleum gas (LPG) usage, aged VOCs, architectural paints, household products, and biogenic emissions. We found that increased emergency hospital admissions for chronic obstructive pulmonary disease were positively linked to ambient VOCs from gasoline emissions (excess risk (ER%): 2.1%; 95% CI: 0.9% to 3.4%), architectural paints (ER%: 1.5%; 95% CI: 0.2% to 2.9%), and household products (ER%: 1.5%; 95% CI: 0.2% to 2.8%), but negatively associated with biogenic VOCs (ER%: −6.6%; 95% CI: −10.4% to −2.5%). Increased congestive heart failure admissions were positively related to VOCs from architectural paints and household products in cold seasons. This study suggested that source-specific VOCs might trigger the exacerbation of cardiorespiratory diseases.

scholarly journals Short-Term Intra-Subject Variation in Exhaled Volatile Organic Compounds (VOCs) in COPD Patients and Healthy Controls and Its Effect on Disease Classification

Metabolites ◽  
2014 ◽  
Vol 4 (2) ◽  
pp. 300-318 ◽  
Author(s):  
Christopher Phillips ◽  
Neil Mac Parthaláin ◽  
Yasir Syed ◽  
Davide Deganello ◽  
Timothy Claypole ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Disease Classification ◽  
Healthy Controls ◽  
Short Term ◽  
Copd Patients ◽  
Volatile Organic

scholarly journals Impact of Short‐Term Climate Variability on Volatile Organic Compounds Emissions Assessed Using OMI Satellite Formaldehyde Observations

2018 ◽  
Vol 45 (16) ◽  
pp. 8681-8689 ◽  
Author(s):  
T. Stavrakou ◽  
J.‐F. Müller ◽  
M. Bauwens ◽  
I. De Smedt ◽  
M. Van Roozendael ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Climate Variability ◽  
Organic Compounds ◽  
Short Term ◽  
Volatile Organic

scholarly journals Volatile and semi-volatile organic compounds in smoke exposure of firefighters during prescribed burning in the Mediterranean region

2010 ◽  
Vol 19 (5) ◽  
pp. 606 ◽  
Author(s):  
Toussaint Barboni ◽  
Magali Cannac ◽  
Vanina Pasqualini ◽  
Albert Simeoni ◽  
Eric Leoni ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Prescribed Burning ◽  
Management Tool ◽  
Fire Intensity ◽  
Short Term ◽  
Limit Value ◽  
Exposure Limit ◽  
Short Term Exposure ◽  
Volatile Organic

Prescribed fires can be used as a forest management tool to reduce the severity of wildfires. Thus, over prolonged and repeated periods, firefighters are exposed to toxic air contaminants. This work consisted in collecting and analysing smoke released by typical Mediterranean vegetation during prescribed burning. Sampling was performed at five active zones on the island of Corsica. Seventy‐nine compounds were identified: volatile organic compounds and semi‐volatile organic compounds, including polycyclic aromatic hydrocarbons. Depending on exposure levels, the toxins present in smoke may cause short‐term or long‐term damage to firefighters’ health. The dangerous compounds emitted, benzene, toluene, ethylbenzene and xylenes, were quantified. Their concentrations varied as a function of the study site. These variations were due to the intrinsic and extrinsic characteristics of the fire site (e.g. plant species, fire intensity and wind). Our results show that benzene concentration is high during prescribed burning, close to the exposure limit value or short‐term exposure limit. Benzene can be considered as a toxicity tracer for prescribed burning because its concentration was above the exposure limit value at all the study sites. The authors suggest that respirators should be used to protect staff during prescribed burning operations.

scholarly journals Quantification of volatile organic compounds in smoke from prescribed burning and comparison with occupational exposure limits

2014 ◽  
Vol 14 (5) ◽  
pp. 1049-1057 ◽  
Author(s):  
E. Romagnoli ◽  
T. Barboni ◽  
P.-A. Santoni ◽  
N. Chiaramonti
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Prescribed Burning ◽  
The United States ◽  
Smoke Inhalation ◽  
Exposure Limits ◽  
Short Term ◽  
Short Term Exposure ◽  
Volatile Organic ◽  
Measured Mass

Abstract. Prescribed burning represents a serious threat to personnel fighting fires due to smoke inhalation. The aim of this study was to investigate exposure by foresters to smoke from prescribed burning, focusing on exposure to volatile organic compounds (VOCs). The methodology for smoke sampling was first evaluated. Potentially dangerous compounds were identified among the VOCs emitted by smoke fires at four prescribed burning plots located around Corsica. The measured mass concentrations for several toxic VOCs were generally higher than those measured in previous studies due to the experimental framework (short sampling distance between the foresters and the flame, low combustion, wet vegetation). In particular, benzene, phenol and furfural exceeded the legal short-term exposure limits published in Europe and/or the United States. Other VOCs such as toluene, ethybenzene or styrene remained below the exposure limits. In conclusion, clear and necessary recommendations were made for protection of personnel involved in fighting fires.

scholarly journals Quantification of the volatile organic compounds in the smoke from prescribed burning and comparison with the occupational exposure limits

2013 ◽  
Vol 1 (6) ◽  
pp. 6499-6520
Author(s):  
T. Barboni ◽  
P.-A. Santoni
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Prescribed Burning ◽  
Smoke Inhalation ◽  
Exposure Limits ◽  
Short Term ◽  
Exposure Limit ◽  
Short Term Exposure ◽  
Volatile Organic ◽  
Very High

Abstract. Prescribed burning represents a serious threat to the personnel fighting fires because of smoke inhalation. This study aims to increase the knowledge about foresters exposure to the prescribed burning smoke by focusing on exposure to volatile organic compounds (VOCs). We initially assessed the methodology for smoke sampling. Then, we identified potentially dangerous molecules among the VOCs identified at 4 prescribed burning sites located around Corsica. The values measured were very high, exceeding the exposure limits, particularly for benzene, phenol, and furfural, whose concentrations were above short-term exposure limit (STEL) values. In conclusion, obvious but necessary recommendations were made for the protection of the personnel involved in fighting fires on a professional basis.

scholarly journals Short-Term Post-Harvest Stress that Affects Profiles of Volatile Organic Compounds and Gene Expression in Rocket Salad during Early Post-Harvest Senescence

Plants ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 4 ◽  
Author(s):  
Natasha D. Spadafora ◽  
Giacomo Cocetta ◽  
Antonio Ferrante ◽  
Robert J. Herbert ◽  
Simone Dimitrova ◽  
...  
Keyword(s):  
Gene Expression ◽  
Volatile Organic Compounds ◽  
Ambient Temperature ◽  
Organic Compounds ◽  
Mechanical Damage ◽  
Storage Period ◽  
Nutrient Content ◽  
Short Term ◽  
Post Harvest ◽  
Volatile Organic

Once harvested, leaves undergo a process of senescence which shares some features with developmental senescence. These include changes in gene expression, metabolites, and loss of photosynthetic capacity. Of particular interest in fresh produce are changes in nutrient content and the aroma, which is dependent on the profile of volatile organic compounds (VOCs). Leafy salads are subjected to multiple stresses during and shortly after harvest, including mechanical damage, storage or transport under different temperature regimes, and low light. These are thought to impact on later shelf life performance by altering the progress of post-harvest senescence. Short term stresses in the first 24 h after harvest were simulated in wild rocket (Diplotaxis tenuifolia). These included dark (ambient temperature), dark and wounding (ambient temperature), and storage at 4 °C in darkness. The effects of stresses were monitored immediately afterwards and after one week of storage at 10 °C. Expression changes in two NAC transcription factors (orthologues of ANAC059 and ANAC019), and a gene involved in isothiocyanate production (thiocyanate methyltransferase, TMT) were evident immediately after stress treatments with some expression changes persisting following storage. Vitamin C loss and microbial growth on leaves were also affected by stress treatments. VOC profiles were differentially affected by stress treatments and the storage period. Overall, short term post-harvest stresses affected multiple aspects of rocket leaf senescence during chilled storage even after a week. However, different stress combinations elicited different responses.

Volatile organic compounds at a coastal site. 2. Short-term variations

1982 ◽  
Vol 16 (1) ◽  
pp. 38-45 ◽  
Author(s):  
R. Fauzi C. Mantoura ◽  
Philip M. Gschwend ◽  
Oliver C. Zafiriou ◽  
K. Robert. Clarke
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Short Term ◽  
Coastal Site ◽  
Volatile Organic
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