Accumulation and distribution of polycyclic aromatic hydrocarbons in rice (Oryza sativa)

2006 ◽  
Vol 140 (3) ◽  
pp. 406-415 ◽  
Author(s):  
S. Tao ◽  
X.C. Jiao ◽  
S.H. Chen ◽  
W.X. Liu ◽  
R.M. Coveney ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic

scholarly journals Polycyclic Aromatic Hydrocarbons in Different Varieties of Rice (Oryza sativa) from Yobe State, Nigeria

2018 ◽  
Vol 7 (2) ◽  
pp. 21 ◽  
Author(s):  
Joseph Clement Akan ◽  
Joshua Yohanna Dawa ◽  
Lawan Inuwa Bukar ◽  
Zakari Muhammed
Keyword(s):  
Oryza Sativa ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Cancer Risk ◽  
Aromatic Hydrocarbons ◽  
Hazard Index ◽  
Human Consumption ◽  
Average Daily Dose ◽  
Daily Dose ◽  
Polycyclic Aromatic ◽  
Rice Samples

The present study determined the levels of sixteen polycyclic aromatic hydrocarbons (PAHs) in rice (Oryza Sativa) samples from six agricultural locations in Bade and Karasuwa Local Government Areas, Yobe State, Nigeria. Four varieties of rice (FARO 42, 44, 45 and 52) were collected for this study. The concentrations of PAHs in the study rice samples were lower than the maximum allowable concentration (MAC), average daily dose (ADD) of PAHs in the different variety of rice from the six agricultural locations shows that FARO 44 had the highest ADD (5.84 x1011 mg/kg), while FARO 52 shows the lowest ADD (1.20 x1015 mg/kg). The potential for non-carcinogenic PAHs in this study revealed that FARO 42 has the highest hazard index (2.04 x1011 mg/kg). Result from incremental lifetime expectancy cancer risk shows that FARO 44 from Jawa had the highest value (4.19 x1010 mg/kg), while the lowest value (7.61 x1015 mg/kg) was recorded for FARO 52 from Rina Kuna agricultural location. Results from the present study shows that the rice samples from the study locations are safe for human consumption and not significantly contaminated by PAHs.

Iron Plaque Prevents Partitioning of Polycyclic Aromatic Hydrocarbons on Rice ( Oryza sativa ) Root Surface

2020 ◽  
Vol 16 (3) ◽  
pp. 392-399
Author(s):  
Xiaofei Lv ◽  
Zhiyuan Nie ◽  
Dongchen Zhang ◽  
Lifang Hu ◽  
Yuping Wu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Root Surface ◽  
Iron Plaque ◽  
Polycyclic Aromatic

The Assessment of Contamination and Source of Polycyclic Aromatic Hydrocarbons from the Sediments of the Someş River

2019 ◽  
Vol 64 (1) ◽  
pp. 55-67
Author(s):  
Vlad Pӑnescu ◽  
◽  
Mihaela Cӑtӑlina Herghelegiu ◽  
Sorin Pop ◽  
Mircea Anton ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

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