Metal accumulation in Lolium perenne and Brassica napus as affected by application of chitosans.
The effects of chitosan, a fishery waste-based material, and its derivative glutaraldehyde cross-linked chitosan (chitosan-GLA) on metal uptake by Lolium perenne (perennial ryegrass) and Brassica napus (rapeseed) were studied in a greenhouse pot experiment. Metal uptake by perennial ryegrass was highly dependent on the rate of addition of the chitosans. Low application rate (1% w/w) enhanced metal uptake, whereas 10% (w/w) addition decreased metal uptake. It was estimated that chitosan 1% (w/w) treatment could assist perennial ryegrass to remove approximately 3.2 kg Zn/ha and 0.29 kg Pb/ha. For rapeseed, metal uptake was decreased at all rates of application of chitosans. The ammonium acetate extractable metals in soil decreased following application of chitosans and plant growth.
WestCHEM, School of Chemistry, University of Glasgow, Glasgow, UK.
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A
Kamari
I D
ID
Pulford
J S J
JS
Hargreaves
D001673:Biodegradation, Environmental / Q000187:drug effects*; D029688:Brassica napus / Q000187:drug effects / Q000378:metabolism*; D048271:Chitosan / Q000031:analogs & derivatives / Q000494:pharmacology*; D008129:Lolium / Q000187:drug effects / Q000378:metabolism*; D008670:Metals / Q000378:metabolism*; D018520:Plant Shoots / Q000187:drug effects / Q000254:growth & development
D008670:Metals; D048271:Chitosan