The Chemistry of Organic Arsenic, Antimony and Bismuth Compounds

1994 ◽  
Keyword(s):  
Bismuth Compounds ◽  
Organic Arsenic

scholarly journals Adsorption of p-Arsanilic Acid on Iron (Hydr)oxides and Its Implications for Contamination in Soils

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 105
Author(s):  
Yifan Yang ◽  
Shiyong Tao ◽  
Zhichun Dong ◽  
Jing Xu ◽  
Xiang Zhang ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Organic Matter Content ◽  
Feed Additives ◽  
Unit Surface Area ◽  
Potential Hazard ◽  
Order Kinetic ◽  
Positive Correlation ◽  
Arsanilic Acid ◽  
Organic Arsenic ◽  
Ph Conditions

Because of the diversification of industries in developing cities, the phenomenon of the simultaneous contamination of various kinds of pollutants is becoming common, and the environmental process of pollutants in multi-contaminated environmental mediums has attracted attention in recent years. In this study, p-arsanilic acid (ASA), a kind of organic arsenic feed additive that contains the arsenic group in a chemical structure, is used as a typical contaminant to investigate its adsorption on iron oxides and its implication for contaminated soils. The adsorption kinetics on all solids can be fitted to the pseudo-second-order kinetic model well. At the same mass dosage conditions, the adsorption amount per unit surface area on iron oxides follows the order α-FeOOH > γ-Fe2O3 > α-Fe2O3, which is significantly higher than that for actual soil, because of the lower content of iron oxides in actual soil. Lower pH conditions favor ASA adsorption, while higher pH conditions inhibit its adsorption as a result of the electrostatic repulsion and weakened hydrophobic interaction. The presence of phosphate also inhibits ASA adsorption because of the competitive effect. Correlations between the amount of ASA adsorption in actual soil and the Fe2O3 content, total phosphorus content, arsenic content, and organic matter content of actual soil are also investigated in this work, and a moderate positive correlation (R2 = 0.630), strong negative correlation (R2 = 0.734), insignificant positive correlation (R2 = 0.099), and no correlation (R2 = 0.006) are found, respectively. These findings would help evaluate the potential hazard of the usage of organic arsenic feed additives, as well as further the understanding of the geochemical processes of contaminants in complicated mediums.

Characterization of organic arsenic compounds in bivalves

1992 ◽  
Vol 6 (4) ◽  
pp. 343-349 ◽  
Author(s):  
Yasuyuki Shibata ◽  
Masatoshi Morita
Keyword(s):  
Arsenic Compounds ◽  
Organic Arsenic

Dual anticancer and antibacterial activities of bismuth compounds based on asymmetric [NN'O] ligands

2021 ◽  
pp. 111522
Author(s):  
Ivana M. Marzano ◽  
Dajena Tomco ◽  
Richard J. Staples ◽  
Edgar H. Lizarazo-Jaimes ◽  
Dawidson Assis Gomes ◽  
...  
Keyword(s):  
Antibacterial Activities ◽  
Bismuth Compounds
Sign in / Sign up

Export Citation Format

Share Document