The distribution and speciation characteristics of vanadium in typical cultivated soils. Issue 9 (15th July 2023)

• Record Type: Journal Article
• Authors: Yang, Jie; Gao, Xiaohui; Li, Jian; Zuo, Rui; Wang, Jinsheng; Song, Liuting
• Is Part Of: International journal of environmental analytical chemistry. Volume 103:Issue 9(2023)
• Page Start: 2168
• Page End: 2181
• Publication Date: 2023-07-15
• Subjects: Vanadium-contaminated soil -- vanadiumspeciation -- cultivated soil -- BCR; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2021.1890057
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: The contents and chemical speciation of vanadium(V) in different types of soil and soils with different particle were studied by the modified BCR method. The results indicated that the V content was in the order of as red soil > cinnamon soil > chernozem soil, and the content of V in red soil was as high as 264.9 mg/kg, which posesa potential risk to the environment and biosecurity. In cinnamon soil, V exhibitedan obvious gradation effect; that is, the content of V in fine particles was higher than in large particles. In addition, V(IV), with low toxicity, accounted for more than 87% of the total V in the three types of soil, and most V existed in the residual fraction. The pH was the main factor affecting the V valence state in the soil, and when the environmental conditions change due to various agricultural measures, such as applying fertiliser, long-term cultivation and intensive irrigation, V(IV) is easily oxidised to V(V) with high toxicity, and reduceable and oxidisable V is converted into an acid-soluble fraction, which leads to increased bioavailability and a potential threat to the environment. Therefore, it is necessary to strengthen environmental risk assessments and monitoring of heavy metals in cultivated soils, especially in areas with high background values.