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Potential of Chilopsis linearis for gold phytomining: using XAS to determine gold reduction and nanoparticle formation within plant tissues.
Int J Phytoremediation. 2007 Mar-Apr; 9(2):133-47.IJ

Abstract

This study reports on the capability of the desert plant Chilopsis linearis (Cav.) Sweet (desert willow) to uptake gold (Au) from gold-enriched media at different plant-growth stages. Plants were exposed to 20, 40, 80, 160, and 320 mg Au L(-1) in agar-based growing media for 13, 18, 23, and 35 d. The Au content and oxidation state of Au in the plants were determined using an inductively coupled plasma/optical emission spectrometer (ICP/OES) and X-ray absorption spectroscopy (XAS), respectively. Gold concentrations ranging from 20 to 80 mg Au L(-1) did not significantly affect Chilopsis linearis plant growth. The concentration of gold in the plants increased as the age of the plant increased. The Au concentrations in leaves for the 20, 40, 80, and 160 mg Au L(-1) treatments were 32, 60, 62, and 179 mg Au kg(-1) dry weight mass, respectively, demonstrating the gold uptake capability of desert willow. The XAS data indicated that desert willow produced gold nanoparticles within plant tissues. Plants exposed to 160 mg Au L(-1) formed nanoparticles that averaged approximately 8, 35, and 18 A in root, stem, and leaves, respectively. It was observed that the average size of the Au nanoparticles formed by the plants is related to the total Au concentration in tissues and their location in the plant

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Publisher Full Text (DOI)

Authors+Show Affiliations

Rodriguez E
Environmental Science and Engineering Ph.D. Program, University of Texas at El Paso, El Paso, Texas 79968, USA.
Parsons JG
No affiliation info available
Peralta-Videa JR
No affiliation info available
Cruz-Jimenez G
No affiliation info available
Romero-Gonzalez J
No affiliation info available
Sanchez-Salcido BE
No affiliation info available
Saupe GB
No affiliation info available
Duarte-Gardea M
No affiliation info available
Gardea-Torresdey JL
No affiliation info available

MeSH

Biodegradation, EnvironmentalBiological TransportGoldKineticsLamiaceaeNanoparticlesPlant LeavesPlant RootsSeedlingsSeedsTexas

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

18246721

Citation

Rodriguez, Elena, et al. "Potential of Chilopsis Linearis for Gold Phytomining: Using XAS to Determine Gold Reduction and Nanoparticle Formation Within Plant Tissues." International Journal of Phytoremediation, vol. 9, no. 2, 2007, pp. 133-47.
Rodriguez E, Parsons JG, Peralta-Videa JR, et al. Potential of Chilopsis linearis for gold phytomining: using XAS to determine gold reduction and nanoparticle formation within plant tissues. Int J Phytoremediation. 2007;9(2):133-47.
Rodriguez, E., Parsons, J. G., Peralta-Videa, J. R., Cruz-Jimenez, G., Romero-Gonzalez, J., Sanchez-Salcido, B. E., Saupe, G. B., Duarte-Gardea, M., & Gardea-Torresdey, J. L. (2007). Potential of Chilopsis linearis for gold phytomining: using XAS to determine gold reduction and nanoparticle formation within plant tissues. International Journal of Phytoremediation, 9(2), 133-47. https://doi.org/10.1080/15226510701232807
Rodriguez E, et al. Potential of Chilopsis Linearis for Gold Phytomining: Using XAS to Determine Gold Reduction and Nanoparticle Formation Within Plant Tissues. Int J Phytoremediation. 2007 Mar-Apr;9(2):133-47. PubMed PMID: 18246721.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Potential of Chilopsis linearis for gold phytomining: using XAS to determine gold reduction and nanoparticle formation within plant tissues. AU - Rodriguez,Elena, AU - Parsons,Jason G, AU - Peralta-Videa,Jose R, AU - Cruz-Jimenez,Gustavo, AU - Romero-Gonzalez,Jaime, AU - Sanchez-Salcido,Blanca E, AU - Saupe,Geoffrey B, AU - Duarte-Gardea,Maria, AU - Gardea-Torresdey,Jorge L, PY - 2008/2/6/pubmed PY - 2008/2/27/medline PY - 2008/2/6/entrez SP - 133 EP - 47 JF - International journal of phytoremediation JO - Int J Phytoremediation VL - 9 IS - 2 N2 - This study reports on the capability of the desert plant Chilopsis linearis (Cav.) Sweet (desert willow) to uptake gold (Au) from gold-enriched media at different plant-growth stages. Plants were exposed to 20, 40, 80, 160, and 320 mg Au L(-1) in agar-based growing media for 13, 18, 23, and 35 d. The Au content and oxidation state of Au in the plants were determined using an inductively coupled plasma/optical emission spectrometer (ICP/OES) and X-ray absorption spectroscopy (XAS), respectively. Gold concentrations ranging from 20 to 80 mg Au L(-1) did not significantly affect Chilopsis linearis plant growth. The concentration of gold in the plants increased as the age of the plant increased. The Au concentrations in leaves for the 20, 40, 80, and 160 mg Au L(-1) treatments were 32, 60, 62, and 179 mg Au kg(-1) dry weight mass, respectively, demonstrating the gold uptake capability of desert willow. The XAS data indicated that desert willow produced gold nanoparticles within plant tissues. Plants exposed to 160 mg Au L(-1) formed nanoparticles that averaged approximately 8, 35, and 18 A in root, stem, and leaves, respectively. It was observed that the average size of the Au nanoparticles formed by the plants is related to the total Au concentration in tissues and their location in the plant SN - 1522-6514 UR - https://www.unboundmedicine.com/medline/citation/18246721/Potential_of_Chilopsis_linearis_for_gold_phytomining:_using_XAS_to_determine_gold_reduction_and_nanoparticle_formation_within_plant_tissues_ DB - PRIME DP - Unbound Medicine ER -