Vertical transport of polycyclic aromatic hydrocarbons in different particle-size fractions of sandy soils

2007 ◽  
Vol 53 (6) ◽  
pp. 1165-1172 ◽  
Author(s):  
Yuejin Zhang ◽  
Shuquan Zhu ◽  
Ru Xiao ◽  
Juan Wang ◽  
Fasheng Li
Keyword(s):  
Particle Size ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Sandy Soils ◽  
Vertical Transport ◽  
Size Fractions ◽  
Particle Size Fractions ◽  
Polycyclic Aromatic

Estimation of origins of polycyclic aromatic hydrocarbons in size-fractionated road dust in Tokyo with multivariate analysis

2005 ◽  
Vol 51 (3-4) ◽  
pp. 169-175 ◽  
Author(s):  
P. Pengchai ◽  
F. Nakajima ◽  
H. Furumai
Keyword(s):  
Particle Size ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Road Dust ◽  
Vehicle Exhaust ◽  
Size Fractions ◽  
Particle Size Fractions ◽  
The Road ◽  
Polycyclic Aromatic ◽  
Diesel Vehicle

This study aimed to estimate the origins of polycyclic aromatic hydrocarbons (PAHs) in size-fractionated road dust in Tokyo. First, seven categories of PAHs sources were defined: diesel vehicle exhaust, gasoline vehicle exhaust, tire, pavement, asphalt or bitumen, petroleum products excluding tire and asphalt, and combustion products except for those in vehicle engines. The 189 source data of 12-PAHs profiles were classified into 11 groups based on cluster analysis combined with principal component analysis. Next, 18 road dust samples were collected from eight streets in Tokyo and fractionated into four different particle-size-fractions: 0.1–45, 45–106, 106–250, and 250–2,000 μm. In order to estimate the contributions of the classified source groups (S1–S11) to PAHs in the road dust, multiple regression analysis was performed with 12-PAH profile of the road dust as dependent variable and average 12-PAHs profiles of the 11 source groups as 11 explanatory variables. Diesel vehicle exhaust, tire and pavement were the major contributors of PAHs in the fractionated road dust. Although the estimated contributions of the 11 source groups varied among the particle-size-fractions, there was no clear and consistent relationship between particle size and the major PAH contributor.

scholarly journals Polycyclic Aromatic Hydrocarbons Concentration in Straw Biochar with different Particle Size

2016 ◽  
Vol 31 ◽  
pp. 91-97 ◽  
Author(s):  
Yungui Li ◽  
Yang Liao ◽  
Ye He ◽  
Kun Xia ◽  
Shufeng Qiao ◽  
...  
Keyword(s):  
Particle Size ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic

scholarly journals Downward fluxes of elemental carbon, metals and polycyclic aromatic hydrocarbons in settling particles from the deep Ionian Sea (NESTOR site), Eastern Mediterranean

2012 ◽  
Vol 9 (12) ◽  
pp. 19165-19197 ◽  
Author(s):  
C. Theodosi ◽  
C. Parinos ◽  
A. Gogou ◽  
A. Kokotos ◽  
S. Stavrakakis ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Mediterranean Sea ◽  
Aromatic Hydrocarbons ◽  
Elemental Carbon ◽  
Eastern Mediterranean ◽  
Vertical Transport ◽  
Sea Surface ◽  
Ionian Sea ◽  
Eastern Mediterranean Sea ◽  
Polycyclic Aromatic

Abstract. To assess sources and major processes controlling vertical transport of both anthropogenic and natural chemical species in deep basins of the Eastern Mediterranean Sea (SE Ionian Sea, Nestor site), we performed chemical characterization (elemental carbon, major and trace metals and polycyclic aromatic hydrocarbons) of marine sinking particles. Sediment traps were deployed at five successive depths, 700 m, 1200 m, 2000 m, 3200 m and 4300 m from the sea surface, during the period of May 2007 to October 2008. Fluxes of all measured species exhibited minimum values from January to March 2008 and maximum from April to September 2008, with an evident covariance revealing a common and rapid vertical transport mechanism from 700 m down to 4300 m depth. Crustal matter flux from atmospheric deposition plays an important role in the temporal variability of particulate matter with significant contribution from biogenic constituents namely the seasonal succession in the export of planktonic biomass, expressed by particulate organic carbon (POC), carbonates and biogenic Si fluxes (Stavrakakis et al., 2012). Tracers (elemental carbon, retene) of the devastating forest fires occurred in August 2007 in southern Greece, were detected at sediment trap material in all depths with a delay of 15 days at 4300 m, indicating a rapid and well-coupled transport of sinking particulate material between the sea-surface and deep layers of the Eastern Mediterranean Sea. Lateral inputs of pollutants at the deepest trap (4300 m) are probably of importance, due to the influence of deep Adriatic water at the study site.

Particle Size Distribution and Gas-Particle Partition of Polycyclic Aromatic Hydrocarbons in Helsinki Urban Area

2004 ◽  
Vol 47 (3) ◽  
pp. 223-241 ◽  
Author(s):  
Masahiko Shimmo ◽  
Karri Saarnio ◽  
Pasi Aalto ◽  
Kari Hartonen ◽  
Tuulia Hyötyläinen ◽  
...  
Keyword(s):  
Particle Size ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Urban Area ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic
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