Seasonal Change in the Atmospheric Concentration of Particulate Polycyclic Aromatic Hydrocarbons in Ho Chi Minh City, Vietnam

2009 ◽  
Vol 83 (5) ◽  
pp. 747-751 ◽  
Author(s):  
Masao Kishida ◽  
Chihiro Mio ◽  
Keiichi Fujimori ◽  
Kiyoshi Imamura ◽  
Norimichi Takenaka ◽  
...  
Author(s):  
Hoang Thi Thanh Thuy ◽  
Pham Thanh Luu ◽  
Tu Thi Cam Loan ◽  
Nguyen Van Dong ◽  
Le Duy Bao ◽  
...  

The bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) in bivalves of the coastal estuary has been investigated since they are favorable seafood. In the present study, the distribution of PAHs was determined in the green mussels (Perna viridis) from Cangio area (Ho Chi Minh City). Global comparison showed a lower PAHs accumulated in the green mussels, which ranged between 2.97 to 15.79 ng/g wet weight (ww). However, the presence of carcinogenic isomer (benzo[a]pyrene) (up to 0.15 ng/g ww) emphasizes a further monitoring program to ensure the food quality and community health. Keywords:  Polycyclic aromatic hydrocarbons, bioaccumulation, green mussels, Cangio.  


2010 ◽  
Vol 62 (8) ◽  
pp. 1922-1930 ◽  
Author(s):  
Keisuke Kojima ◽  
Shinji Kobayashi ◽  
Tomonori Kindaichi ◽  
Noriatsu Ozaki

The wet deposition for particulate matter (PM) and polycyclic aromatic hydrocarbons (PAHs) was modelled from the consecutive measurements of atmospheric concentration and wet deposition for particulate matter and PAHs in Higashi-Hiroshima city, Japan. In order to estimate the model in detail, the wet deposition was classified with that from gaseous and PM phase. The gaseous PAHs assumed to be dissolved into raindrops according to Henry's constant, and the PAHs attached on atmospheric PM were assumed to be trapped with PM. The PM was classified with coarse (>7 μm) and fine (0.6–7 μm) PM for the calculation of trap. PM and PAHs depositions estimated with the wet deposition model were compared with measured data. The ratios of the measured to the estimated values of PM and PAHs gave close agreement with measurements (0.41–4.29 (1.35: average) for PM and (0.32–3.83 (1.42)) for PAHs) regardless of precipitation. The depositions of PAHs of liquid and particulate phase were on the other hand significantly different from those from gaseous and PM phases respectively. From those differences, the transfer from particulate to liquid phase was suggested to occur during the precipitation.


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