Author : Kevin W. Meyer
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (627 download)
Book Synopsis Use of the Bryophyte, Hygrohypnum Ochraceum, to Assess the Bioavailability and Bioaccumulation of Heavy Metals from the Upper Arkansas River in Colorado by : Kevin W. Meyer
Download or read book Use of the Bryophyte, Hygrohypnum Ochraceum, to Assess the Bioavailability and Bioaccumulation of Heavy Metals from the Upper Arkansas River in Colorado written by Kevin W. Meyer and published by . This book was released on 2003 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bryophyte, Hygrohypmum ochraceum, was collected from Nate's Creek at the top of Owl Creek Pass near Gunnison, Colorado and reared at the University of Southern Colorado. The reared bryophytes were placed at 12 sites in the Arkansas River from near Leadville, Colorado downstream to Pueblo, Colorado for a total of ten days during the Fall of 2002. The exposed plants were digested and analyzed for cadmium, copper, iron, lead, manganese and zinc using atomic absorption spectroscopy (AAS). Two water samples were collected over the ten-day period of exposure from all sites. The first sample was collected at the beginning of the ten-day run while the second sample was collected at the end of the ten-day run. The water samples were analyzed for Al, Cd, Ca, Cu, Fe, Pb, Mg, Mn, Se and Zn using inductively coupled plasma (ICP) emission. Bioconcentration factors [concentration in the bryophyte tissue (ppm) divided by the concentration in the river water (ppm)] for Cd, Pb and Zn were as high as tens of thousands while bioconcentration factors for Cu, Fe and Mn were as high as hundreds of thousands. Direct and significant correlations between the metal in the bryophytes and the log of the metal in the Arkansas River water were found for zinc and cadmium but not found for iron, manganese, copper and lead. The r-squared value for zinc was equal to 0.824 and the r-squared value for cadmium was 0.673.
