Cadmium Bioavailability and Accumulation in Rice Grain are Controlled by pH and Ca in Paddy Soils with High Geological Background of Transportation and Deposition

2021 ◽  
Author(s):  
Chen Jiale ◽  
Zheng Chao ◽  
Ruan Jinzhao ◽  
Zhang Chunhua ◽  
Ge Ying
Keyword(s):  
Paddy Soils ◽  
Rice Grain ◽  
Cadmium Bioavailability ◽  
Geological Background

Iron oxidation-reduction and its impacts on cadmium bioavailability in paddy soils: a review

2012 ◽  
Vol 6 (4) ◽  
pp. 509-517 ◽  
Author(s):  
Chunhua Zhang ◽  
Ying Ge ◽  
Huan Yao ◽  
Xiao Chen ◽  
Minkun Hu
Keyword(s):  
Iron Oxidation ◽  
Paddy Soils ◽  
Oxidation Reduction ◽  
Cadmium Bioavailability

Analysis of field-moist Cd contaminated paddy soils during rice grain fill allows reliable prediction of grain Cd levels

2007 ◽  
Vol 302 (1-2) ◽  
pp. 125-137 ◽  
Author(s):  
R. W. Simmons ◽  
A. D. Noble ◽  
P. Pongsakul ◽  
O. Sukreeyapongse ◽  
N. Chinabut
Keyword(s):  
Paddy Soils ◽  
Rice Grain ◽  
Reliable Prediction

Affects of mining activities on Cd pollution to the paddy soils and rice grain in Hunan province, Central South China

2013 ◽  
Vol 185 (12) ◽  
pp. 9843-9856 ◽  
Author(s):  
Yan Du ◽  
Xue-Feng Hu ◽  
Xiao-Hong Wu ◽  
Ying Shu ◽  
Ying Jiang ◽  
...  
Keyword(s):  
South China ◽  
Paddy Soils ◽  
Hunan Province ◽  
Rice Grain ◽  
Mining Activities ◽  
Central South

Synthesis of ZnO/ZnFe2O4 nanocomposites in organic-free media and their photocatalytic activity under natural sunlight

2020 ◽  
Vol 14 (2) ◽  
pp. 6801-6810
Author(s):  
Rahmayeni Rahmayeni ◽  
Zulhadjri Zulhadjri ◽  
Yeni Stiadi ◽  
Agusnar Harry ◽  
Syukri Arief
Keyword(s):  
Electron Microscopy ◽  
Hexagonal Wurtzite Structure ◽  
Rice Grain ◽  
X Ray Diffraction ◽  
Homogeneous Sphere ◽  
Natural Sunlight ◽  
Transmission Electron ◽  
Photocatalytic Activities ◽  
Free Media ◽  
Photocatalytic Applications

Nanocomposite ZnO/ZnFe2O4 photocatalysts with different proportions of ZnFe2O4 were synthesized in organic-free media using metal nitric as precursors. The ZnO phase with hexagonal wurtzite structure and low crystallinity of ZnFe2O4 was confirmed using XRD (X-Ray diffraction). Different morphologies of the nanocomposites were obtained ranging from rice grain-like with a porous surface to homogeneous sphere-like nanoparticles as shown in Scanning Electron Microscopy (SEM) and TEM Transmission Electron Microscopy (TEM) studies. Magnetic properties measured by Visible Sampler Magnetometer (VSM) showed diamagnetic and paramagnetic behavior for the nanocomposites. Analysis with Diffuse Reflectance Spectrophotometer (DRS) UV-vis showed an increase the composition of ferrite in composites increasing its ability to absorb visible light. Photocatalytic activities of ZnO/ZnFe2O4 nanocomposites on the degradation of Rhodamine B dye reached 95.6% after 3 h under natural sunlight suggesting their suitability for sunlight driven photocatalytic applications. 

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