Environ. Sci. Technol. 2003, 37, 1056
2002, Volume 36, 3550-3555 H. Anson Moye,* Carl J. Miles, Edward J. Phlips, Bethany Sargent, and Kristen K. Merritt: Kinetics and Uptake Mechanisms for Monomethylmercury between Freshwater Algae and Water. Page 3552. Several erroneous numerical values appear in Table 1 in columns 7 and 8. Also, the heading for column 7 was missing “h-1”. A corrected Table 1 follows.
TABLE 1. Uptake of MeHg by Algal Speciesa species
cell type
cell volume (µm3/cell)
Selenastrum capricornutum Thalassiosira spp. Schizothrix calcicola Cosmarium botrytisc 3 days 4 days 14 days 30 days
green diatom blue-green green
11.96 965 212 113 098
n
amol/cell
SD
amol ng-1 nM-1 h-1
SD
amol g-1 h-1 d (×1010)
SD (×1010)
14 10 5
0.440 0.394 b
0.038 0.027 b
278 16.7 11.2
24 1.20 0.7
52.8 3.17 2.13
4.5 0.22 0.13
3 3 6 5
38.1 41.0 202 759
2.9 6.0 18 9
24.1 25.9 127 480
1.8 3.8 12 6
4.58 4.92 24.2 91.1
0.35 0.73 2.2 1.1
a Cells in stationary phase except for Cosmarium, 3 and 4 days (exponential phase). To assist the reader in better understanding the column labels, the following explanations are added. amol/cell ) attomoles of MeHgCl taken up by each cell. SD ) standard deviation. amol ng-1 h-1 nM-1 ) attomoles of MeHgCl taken up per nanogram of algae per hour per nanomolar concentration of MeHgCl in solution. amol g-1 h-1 ) attomoles of MeHgCl taken up per gram of algae per hour. b Filamentous algae; not able to calculate per cell value. c Data reported by cell age. d Cell weights expressed as dry weights.
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2003 American Chemical Society Published on Web 01/23/2003
