Home > Research > Publications & Outputs > Gold uptake by perennial ryegrass


Text available via DOI:

View graph of relations

Gold uptake by perennial ryegrass: The influence of humates on the cycling of gold in soils

Research output: Contribution to Journal/MagazineJournal articlepeer-review

<mark>Journal publication date</mark>1/01/1989
Issue number1
Number of pages8
Pages (from-to)3-10
Publication StatusPublished
<mark>Original language</mark>English


An experiment in which perennial ryegrass (Lolium perenne L.) was grown in solution cultures containing various forms of radioactive gold ( 198 Au) is described. Uptake of labelled Au from solutions containing either Au chloride or various Au-humic acid (HA) complexes is compared. In each case concentrations of Au in the plant roots were several fold higher than in the plant shoots. However, the Au concentration in roots from some of the Au-HA preparations was only about 5% of that from the Au-HA solutions. High voltage electrophoresis studies indicate the presence of several Au-HA complexes in the solution cultures. The relevance of these findings to the cycling of Au within soils is discussed.