A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The Fate of Arsenic in Soil-Plant Systems
Arsenic (As) is an element belonging to the group V-A, and it demonstrates characteristics of a metalloid. Because arsenic more easily forms anions, its non-metal properties dominate. When arsenic is in an oxidation state of +5, it acts similar to phosphorus, a fact that has many implications for the way in which it reacts in soil, as well as its potential toxicity in plants. The most common oxidation states of As are −3, 0, +3, and +5. Arsines and metal arsines are those in which As has an oxidation state of −3, and these forms are very unstable under oxidizing conditions. Under aerobic conditions, the oxidation state of As tends to be +5, and when this occurs at a pH between 2 and 3, arsenic acid (H3AsO4) is formed. When the pH rises to values between 3 and 11, this compound disassociates to H2AsO4− and HAsO42− (Smedley and Kinninburgh 2002). Under anaerobic conditions, the predominant As species is H3AsO3.
The Fate of Arsenic in Soil-Plant Systems
Arsenic (As) is an element belonging to the group V-A, and it demonstrates characteristics of a metalloid. Because arsenic more easily forms anions, its non-metal properties dominate. When arsenic is in an oxidation state of +5, it acts similar to phosphorus, a fact that has many implications for the way in which it reacts in soil, as well as its potential toxicity in plants. The most common oxidation states of As are −3, 0, +3, and +5. Arsines and metal arsines are those in which As has an oxidation state of −3, and these forms are very unstable under oxidizing conditions. Under aerobic conditions, the oxidation state of As tends to be +5, and when this occurs at a pH between 2 and 3, arsenic acid (H3AsO4) is formed. When the pH rises to values between 3 and 11, this compound disassociates to H2AsO4− and HAsO42− (Smedley and Kinninburgh 2002). Under anaerobic conditions, the predominant As species is H3AsO3.
The Fate of Arsenic in Soil-Plant Systems
Reviews Env.Contamination (formerly:Residue Reviews)
Whitacre, David M. (editor) / Moreno-Jiménez, Eduardo (author) / Esteban, Elvira (author) / Peñalosa, Jesús M. (author)
Reviews of Environmental Contamination and Toxicology ; Chapter: 1 ; 215 ; 1-37
2011-10-28
37 pages
Article/Chapter (Book)
Electronic Resource
English
Fate of Cryptosporidium parvum oocysts within soil, water, and Plant environment
| Online Contents | 2013
Level and Fate of Arsenic(As) in the Namdae Stream
| British Library Online Contents | 2000
The Fate of Fluopyram in the Soil–Water–Plant Ecosystem: A Review
| Springer Verlag | 2022
The fate of selected heavy metals and arsenic in a constructed wetland
| Taylor & Francis Verlag | 2019