- Title
- Copper interactions on arsenic bioavailability and phytotoxicity in soil
- Creator
- Kader, Mohammed; Lamb, Dane T.; Wang, Liang; Megharaj, Mallavarapu; Naidu, Ravi
- Relation
- Ecotoxicology and Environmental Safety Vol. 148, p. 738-746
- Publisher Link
- http://dx.doi.org/10.1016/j.ecoenv.2017.11.025
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2018
- Description
- Arsenic (As) and copper (Cu) are co-contaminants in the environment but little is known about their ecological impact as mixtures in soil. In this study, we investigated the combined As-Cu interactions on toxicity and uptake as binary mixtures in 5 contrasting soils. The study included solubility, contaminant uptake and toxicity in cucumber (Cucumis sativus L.) as a model plant species. Soils were spiked individually and as a mixtures at 10 different As levels (2, 4, 8 up to 1024 mg kg−1). Copper was added with As at two effective concentration levels (EC10Cu and EC50Cu). Arsenic uptake was significantly reduced in the presence of Cu and a higher effect was demonstrated with increasing pore-water pH. Copper accumulation was not significantly influenced by As. An additive response on plant growth was predominant overall when expressed from pore-water parameters with root mean square errors of 12.6 and 13.2 for EC10Cu and EC50Cu treatments, respectively.
- Subject
- bioaccumulation; bioavailability; phytotoxicity; pore-water; SDG 6; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1447334
- Identifier
- uon:43123
- Identifier
- ISSN:0147-6513
- Language
- eng
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