Alternative Normalization Method of Atmospheric Polycyclic Aromatic Hydrocarbons Pollution Level Recorded by Tree Bark

2006 ◽  
Vol 40 (19) ◽  
pp. 5853-5859 ◽  
Author(s):  
Yuli Zhao ◽  
Qiuquan Wang ◽  
Limin Yang ◽  
Zhenji Li ◽  
Kenichi Satake ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Normalization Method ◽  
Tree Bark ◽  
Pollution Level ◽  
Polycyclic Aromatic

Effects of Multispecies Phytoremediation on the Fate of Phenanthrene and Pyrene in Soils

2013 ◽  
Vol 838-841 ◽  
pp. 2387-2394
Author(s):  
Sheng Wang Pan ◽  
Sheng Xian Cao ◽  
Mao Ping He ◽  
Li Jian Yang
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Plant Species ◽  
Aromatic Hydrocarbons ◽  
White Clover ◽  
Pollution Level ◽  
Mixed Cropping ◽  
Cropping Patterns ◽  
Polycyclic Aromatic

The potentials of three plant species, rape, alfalfa and white clover, separately or jointly on the degradation of polycyclic aromatic hydrocarbons (PAHs) in soils were estimated by pots experiments. Results showed that the presence of vegetation apparently enhanced the dissipation of PAHs at initial concentrations ranging from 20.05 to 322.06 mg·kg-1, but the efficacy enhanced varied greatly among plant species and cropping patterns. Within 70-day experiment, alfalfa and white clover showed higher efficiencies for the removal of PAHs than those of rape, and mixed cropping greatly enhanced the dissipation of PAHs as compared to single cropping. On average 74.87% of phenanthrene or 62.81% of pyrene were removed from soils with mixed cropping of rape and alfalfa, and 72.01% of phenanthren or 68.44% of pyrene removed by mixed cropping of rape and white clover. Under similar pollution level, PAHs accumulated in plant, irrespective of root and shoot, was much lower in mutli-planted treatments than in mono-planted ones. Results suggested a feasibility of the establishment of multispecies remediation for enforcing the dissipation of PAHs, which may also decrease the accumulations of PAHs in plant and thus reduce their risks to humans.

scholarly journals Sedimentary Record of Polycyclic Aromatic Hydrocarbons from the Shuanglong Catchment, Southwest China

2017 ◽  
Vol 2017 ◽  
pp. 1-10
Author(s):  
Yu-ping Liu ◽  
Yan-hua Wang ◽  
Chun Ye ◽  
Biao Xie ◽  
Hao Yang
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Pollution Source ◽  
Pollution Level ◽  
Average Value ◽  
Pollution Levels ◽  
Socioeconomic Changes ◽  
Polycyclic Aromatic ◽  
Pahs Concentration ◽  
Profile Distribution

Polycyclic aromatic hydrocarbons (PAHs) in the dated sediments from the Shuanglong catchment in the southwest of China were measured to characterize source inputs. The PAHs concentrations in the priority controlling list of US EPA (∑PAHs) ranged within 102.47~563.24 ng g−1, with an average value of 207.18 ng g−1. The 2-3 rings PAHs were predominant, accounting for 73.77% of ∑PAH. According to the classification of pollution levels, ∑PAHs concentrations in the sediments are within the range of moderate pollution level. Both the total and individual PAH concentrations changed with the depth. The profile distribution of PAHs concentration in the sediments suggested that PAHs acted as an effective way to reconstruct the historical trends of socioeconomic changes in the study areas. Results of Ant/(Ant + Phe), Fla/(Fla + Pyr), and BaA/(BaA + Chry) show that petroleum and petrogenic matter are attributed to the potential pollution source in the Shuanglong catchment. The coal combustion and incomplete combustion of gasoline and fossil fuel are dominant. TOC contents had positive correlation with ∑PAHs (R2=0.72, P<0.001), 2-3 rings (R2=0.44, P<0.001), 4-ring (R2=0.78, P<0.001), and 5-6 rings (R2=0.62, P<0.001).

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