A field investigation of solubility and food chain accumulation of biosolid-cadmium across diverse soil types

McLaughlin, Mike J., Whatmuff, Mark, Warne, Michael, Heemsbergen, Diane, Barry, Glenn, Bell, Mike, Nash, David and Pritchard, Deb (2006) A field investigation of solubility and food chain accumulation of biosolid-cadmium across diverse soil types. Environmental Chemistry, 3 6: 428-432.


Author McLaughlin, Mike J.
Whatmuff, Mark
Warne, Michael
Heemsbergen, Diane
Barry, Glenn
Bell, Mike
Nash, David
Pritchard, Deb
Title A field investigation of solubility and food chain accumulation of biosolid-cadmium across diverse soil types
Journal name Environmental Chemistry   Check publisher's open access policy
ISSN 1448-2517
1449-8979
Publication date 2006
Sub-type Article (original research)
DOI 10.1071/EN06061
Volume 3
Issue 6
Start page 428
End page 432
Total pages 5
Place of publication Collingwood, Vic., Australia
Publisher CSIRO
Language eng
Formatted abstract One of the pathways for transfer of cadmium (Cd) through the food chain is addition of urban wastewater solids (biosolids) to soil, and many countries have restrictions on biosolid use to minimize crop Cd contamination. The basis of these restrictions often lies in laboratory or glasshouse experimentation of soil–plant transfer of Cd, but these studies are confounded by artefacts from growing crops in controlled laboratory conditions. This study examined soil to plant (wheat grain) transfer of Cd under a wide range of field environments under typical agronomic conditions, and compared the solubility and bioavailability of Cd in biosolids to soluble Cd salts. Solubility of biosolid Cd (measured by examining Cd partitioning between soil and soil solution) was found to be equal to or greater than that of soluble Cd salts, possibly due to competing ions added with the biosolids. Conversely, bioavailability of Cd to wheat and transfer to grain was less than that of soluble Cd salts, possibly due to addition of Zn with the biosolids, causing reduced plant uptake or grain loading, or due to complexation of soluble Cd2+ by dissolved organic matter.
Keyword Agricultural chemistry
Bioavailability
Contaminant uptake
Food quality
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes RESEARCH FRONT: Cadmium Bioavailability and Biosorption. Published under Rapid Communications.

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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