- Title
- A simple and inexpensive chromium-reducible sulfur method for acid-sulfate soils
- Creator
- Burton, Edward; Sullivan, Leigh; Bush, Richard; Johnston, Scott; Keene, Annabelle
- Date
- 2008
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/99522
- Identifier
- vital:10378
- Identifier
-
https://doi.org/10.1016/j.apgeochem.2008.07.007
- Identifier
- ISSN:0883-2927
- Abstract
- A new chromium-reducible sulfur (CRS) method suitable for the quantification of reduced inorganic S (RIS) in acid-sulfate soils is presented. The new method utilises the reduction of RIS by an acidic Cr(II) solution within a sealed reaction chamber and diffusion of the produced H2S(g) into an alkaline Zn solution. It offers rapid sample processing times, without the need for large volumes of high-purity N2(g) or for specialized, expensive glassware. Examination of pyrite-talc mixtures containing up to 11.8% pyrite, revealed that the method achieves 95-98% recovery of RIS. A comparison between CRS measured by the new diffusion-based method and that measured by a standard purge-and-trap method for 25 pyritic soil samples shows a very strong (r2 = 0.996) linear relationship with a slope of 0.995. The ability of the new diffusion-based CRS method to achieve accurate and precise quantification of RIS in acid-sulfate soils is demonstrated. © 2008 Elsevier Ltd. All rights reserved.
- Publisher
- Elsevier Ltd
- Relation
- Applied Geochemistry Vol. 23, no. 9 (2008), p. 2759-2766
- Rights
- Copyright © 2008 Elsevier Ltd. All rights reserved.
- Rights
- This metadata is freely available under a CCO license
- Subject
- 0402 Geochemistry; 0502 Environmental Science and Management; Interlocking signals; Soils; Sulfate minerals; Sulfur; Reaction chambers; Sulfate soils; Chromium; Acid sulfate soil; Diffusion; Pyrite; Quantitative analysis; Reduction
- Reviewed
- Hits: 1840
- Visitors: 1770
- Downloads: 1
| Thumbnail | File | Description | Size | Format |
|---|