Chemical availability of arsenic and antimony in industrial soils |
| |
Authors: | Judit Gál Andrew S Hursthouse Simon J Cuthbert |
| |
Institution: | (1) School of Engineering and Science, University of Paisley, Paisley, PA1 2BE, Scotland, UK |
| |
Abstract: | Total concentrations and extractable fractionations of As and Sb were determined in soil samples from former mining sites in Scotland and Italy. Pseudo-total levels of As and Sb in the sample were between 50–17,428 mg/kg and 10–1,187 mg/kg (Scotland), and 16–691 mg/kg and 1.63–11.44 mg/kg (Italy). Between 0.001–0.63% and <0.001−8.82% of the total soil As and Sb, were extractable using, a single extraction bioavailability estimate. Data from an As-specific extraction procedure revealed that up to 60% of As was associated to amorphous Fe-Al oxyhydroxide phase in all soils. A non-specific-sequential extraction test also showed As to be strongly associated with Fe (and Al) oxyhydroxides at both locations. In the case of Sb, in addition to the crystalline Fe-oxide bound Sb the Al-silicate phase also appeared to be significant. At both sites Sb appears to be chemically more accessible than As with consistent availability despite the varied origin and host soil properties. |
| |
Keywords: | Contaminated soils Arsenic Antimony Availability Mobility Sequential extraction Mining |
本文献已被 SpringerLink 等数据库收录! |
|