Cascade Impactor Sampling to measure Polycyclic Aromatic Hydrocarbons from Biomass Combustion Processes

2003 ◽  
Vol 86 (1) ◽  
pp. 103-111 ◽  
Author(s):  
F SAEZ
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Cascade Impactor ◽  
Biomass Combustion ◽  
Polycyclic Aromatic ◽  
Combustion Processes

scholarly journals One-Century Sedimentary Record, Sources, And Ecological Risk of Polycyclic Aromatic Hydrocarbons in Dianchi Lake, China

2021 ◽  
Author(s):  
Xiaohua Ma ◽  
Hao Yang ◽  
Changchun Huang ◽  
Tao Huang ◽  
Shuaidong Li
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Pore Water ◽  
Aromatic Hydrocarbons ◽  
Sedimentary Environment ◽  
Biomass Combustion ◽  
Diagnostic Ratios ◽  
Dianchi Lake ◽  
Coal Consumption ◽  
Sediment Pore Water ◽  
Polycyclic Aromatic

Abstract In this study, the sedimentary records, sources, and ecological risks of polycyclic aromatic hydrocarbons (PAHs) in Dianchi Lake were analyzed. The concentration ranges of ΣPAH16 in the sediments of Dianchi Lake were 368–990 ng/g, with an average value of 572 ng/g, peaking in 1988. Economic development and rapid population growth, as well as the rapid growth of coal consumption, have a greater impact on the HMW PAHs than on the LMW PAHs in the sedimentary environment. The results of the diagnostic ratios and PCA model show that the main sources of PAHs were coal and biomass combustion, as well as fossil fuel combustion sources in individual years. The risk assessment results showed that the PAH concentrations in the sediment were within a safe range. In the past 100 years of sediment pore water, except for Phe, which reached chronic toxic pollution levels in some years, other 2-3 ring LMW PAHs have been within a safe range. With the development of industrialization and urbanization, the burning of fossil fuels such as coal and petroleum has increased, and some of the 4-6 ring HMW PAHs have reached chronic toxicity or even acute toxicity in the sediment pore water.

scholarly journals Prediction of gas-particle partitioning of PAHs based on M5’ model trees

2011 ◽  
Vol 15 (1) ◽  
pp. 105-114 ◽  
Author(s):  
Jelena Radonic ◽  
Dubravko Culibrk ◽  
Mirjana Vojinovic-Miloradov ◽  
Branislav Kukic ◽  
Maja Turk-Sekulic
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Ambient Air ◽  
Adsorption Model ◽  
M5 Model Tree ◽  
Polycyclic Aromatic ◽  
Tree Models ◽  
Experimental Values ◽  
Combustion Processes ◽  
M5 Model

During the thermal combustion processes of carbon-enriched organic compounds, emission of polycyclic aromatic hydrocarbons into ambient air occurs. Previous studies of atmospheric distribution of polycyclic aromatic hydrocarbons showed low correlation between the experimental values and Junge-Pankow theoretical adsorption model, suggesting that other approaches should be used to describe the partitioning phenomena. The paper evaluates the applicability of multivariate piece-wise-linear M5? model-tree models to the problem of gas-particle partitioning. Experimental values of particle-associated fraction, obtained for 129 ambient air samples collected at 24 background, urban and industrial sites, were compared to the prediction results obtained using M5? and the Junge-Pankow model. The M5? approach proposed and models learned are able to achieve good correlation (correlation coefficient >0.9) for some low-molecular-weight compounds, when the target is to predict the concentration of gas phase based on the particle-associated phase. When converted to particle-bound fraction values, the results, for selected compounds, are superior to those obtained by Junge-Pankow model by several orders of magnitude, in terms of the prediction error.

scholarly journals Distributions, Sources, and Backward Trajectories of Atmospheric Polycyclic Aromatic Hydrocarbons at Lake Small Baiyangdian, Northern China

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Ning Qin ◽  
Xiang-Zhen Kong ◽  
Ying Zhu ◽  
Wei He ◽  
Qi-Shuang He ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Gas Phase ◽  
Aromatic Hydrocarbons ◽  
Total Concentration ◽  
Northern China ◽  
Biomass Combustion ◽  
Particulate Phase ◽  
Backward Trajectories ◽  
Dust Fall ◽  
Polycyclic Aromatic

Air samples were collected seasonally at Lake Small Baiyangdian, a shallow lake in northern China, between October 2007 and September 2008. Gas phase, particulate phase and dust fall concentrations of polycyclic aromatic hydrocarbons (PAHs) were measured using a gas chromatograph-mass spectrometer (GC-MS). The distribution and partitioning of atmospheric PAHs were studied, and the major sources were identified; the backward trajectories of air masses starting from the center of Lake Small Baiyangdian were calculated for the entire year. The following results were obtained: (1) The total concentration of 16 priority controlled PAHs (PAH16) in the gas phase was417.2±299.8 ng·m−3, in the particulate phase was150.9±99.2 ng·m−3, and in dust fall was6930.2±3206.5 ng·g−1. (2) Vehicle emission, coal combustion, and biomass combustion were the major sources in the Small Baiyangdian atmosphere and accounted for 28.9%, 45.1% and 26.0% of the total PAHs, respectively. (3) Winter was dominated by relatively greater PAHs polluted northwesterly air mass pathways. Summer showed a dominant relatively clean southern pathway, whereas the trajectories in autumn and spring might be associated with high pollution from Shanxi or Henan province.

scholarly journals Prediction of gas-particle partitioning of polycyclic aromatic hydrocarbons based on M5' model trees

2012 ◽  
Vol 16 (2) ◽  
pp. 551-560 ◽  
Author(s):  
Jelena Radonic ◽  
Dubravko Culibrk ◽  
Mirjana Vojinovic-Miloradov ◽  
Branislav Kukic ◽  
Maja Turk-Sekulic
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Ambient Air ◽  
Adsorption Model ◽  
M5 Model Tree ◽  
Polycyclic Aromatic ◽  
Tree Models ◽  
Experimental Values ◽  
Combustion Processes ◽  
M5 Model

During the thermal combustion processes of carbon-enriched organic compounds, emission of polycyclic aromatic hydrocarbons into ambient air occurs. Previous studies of atmospheric distribution of polycyclic aromatic hydrocarbons showed low correlation between the experimental values and Junge-Pankow theoretical adsorption model, suggesting that other approaches should be used to describe the partitioning phenomena. The paper evaluates the applicability of multivariate piece-wise-linear M5' model-tree models to the problem of gas-particle partitioning. Experimental values of particle-associated fraction, obtained for 129 ambient air samples collected at 24 background, urban, and industrial sites, were compared to the prediction results obtained using M5' and the Junge-Pankow model. The M5' approach proposed and models learned are able to achieve good correlation (correlation coefficient >0.9) for some low-molecular-weight compounds, when the target is to predict the concentration of gas phase based on the particle-associated phase. When converted to particle-bound fraction values, the results, for selected compounds, are superior to those obtained by Junge-Pankow model by several orders of magnitude, in terms of the prediction error. <br><br><font color="red"><b> This article has been retracted. Link to the retraction <u><a href="http://dx.doi.org/10.2298/TSCI121205224E">10.2298/TSCI121205224E</a><u></b></font>

scholarly journals Emissions of polycyclic aromatic hydrocarbons during biomass combustion in a drop tube furnace

Fuel ◽  
2017 ◽  
Vol 207 ◽  
pp. 790-800 ◽  
Author(s):  
J.M. Colom-Díaz ◽  
María U. Alzueta ◽  
Ulisses Fernandes ◽  
Mário Costa
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Tube Furnace ◽  
Biomass Combustion ◽  
Drop Tube ◽  
Drop Tube Furnace ◽  
Polycyclic Aromatic

scholarly journals The use of polycyclic aromatic hydrocarbons molecular diagnostic ratios as a source identification tool - case study

2018 ◽  
Vol 247 ◽  
pp. 00062
Author(s):  
Katarzyna Janoszka ◽  
Justyna Klyta ◽  
Łukasz Laks ◽  
Krzysztof Słaby
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Source Identification ◽  
Anthropogenic Sources ◽  
Rural Site ◽  
Molecular Diagnostic ◽  
Diagnostic Ratios ◽  
Polycyclic Aromatic ◽  
Combustion Processes

Levoglucosan (LG) and Polycyclic Aromatic Hydrocarbons (PAHs) are organic substances emitted from variety of anthropogenic sources, mainly as a result of incomplete combustion or pyrolysis of organic material. The seasonality of PAHs emissions is a well demonstrated fact, observed in most monitoring studies, where PAHs air concentrations in winter are much higher than their respective in the summer, due to seasonally variable emission sources. Various techniques have been proposed as ideal source identification (or apportionment) tools, and much debate exists in scientific literature about the effectiveness of the proposed methodologies. The most common methodology is the use of molecular diagnostic ratios (MDRs). Based on the annual measurement campaign in rural site located on South Poland, were levoglucose and PAHs were analyzed, the MDRs were determined. The results showed that the combustion processes of solid fuels, including biomass, are mainly responsible for air quality.

scholarly journals A Mini-Review for an Adsorption of Polycyclic Aromatic Hydrocarbons (PAHs) by Physical Gel

2021 ◽  
Vol 12 (6) ◽  
pp. 8195-8204
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Human Exposure ◽  
Review Article ◽  
Functional Material ◽  
Preparation Methods ◽  
Household Wastewater ◽  
Polycyclic Aromatic ◽  
Physical Gel ◽  
Combustion Processes

On 4 December in 2002, the mainstream source of exposure to Polycyclic Aromatic Hydrocarbons (PAHs) was defined by the Scientific Committee as food and inhaled air. Several Polycyclic Aromatic Hydrocarbons (PAHs) such as benzo[a]pyrene, chrysene, and dibenzo(a,h)anthracene in food caused the risk of human health. These are produced by the cooking processes, including combustion processes and pyrolysis sources. Certain food preparation methods like grilling, roasting, and smoking are accumulated PAHs in the sink pipes. As PAHs are toxic and carcinogenic, it raises health and environmental problems. What is the method for preventing PAHs exist in wastewater? This review article introduces a functional material, gelatin physical gels, to trap and remove the PAHs. The physical gel changes from colorless to pale yellow during the adsorption of PAHs in household wastewater. The concentration of PAHs is determined by GC-MS analysis, which decreases the potential risk of human exposure in an environment with PAHs.

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