Determination of the background ranges of trace metals in the brown alga Sargassum pallidum from the Northwestern Sea of Japan

Determination of the background ranges of trace metals in the brown alga Sargassum pallidum from... The background concentrations of Fe, Mn, Zn, Cu, Pb, Cd, and Ni were calculated in samples of the brown algae Sargassum pallidum from the northwest of the Sea of Japan for the 1995–2008 period. We found 60–672 μg/g of dry mass for Fe, 12–455 for Mn, 6.2–23.8 for Zn 0.9–3.9 for Cu, 0–5.5 for Pb, 0.5–1.7 for Cd, and 0.4–3.8 for Ni. The median plus double median of the absolute deviations from the median (Me + 2MAD) was used as the upper threshold of background metal concentrations. The lower threshold for the background data, which coincides with the physiologically necessary quantity of an element, was the median of 15% of the minimum values of the sample minus the double median of the absolute deviations of the median (Me15 — 2MAD15). The Me15 ± 2MAD15 range was regarded as the natural background data. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Determination of the background ranges of trace metals in the brown alga Sargassum pallidum from the Northwestern Sea of Japan

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2012 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S1063074012030030
Publisher site
See Article on Publisher Site

Abstract

The background concentrations of Fe, Mn, Zn, Cu, Pb, Cd, and Ni were calculated in samples of the brown algae Sargassum pallidum from the northwest of the Sea of Japan for the 1995–2008 period. We found 60–672 μg/g of dry mass for Fe, 12–455 for Mn, 6.2–23.8 for Zn 0.9–3.9 for Cu, 0–5.5 for Pb, 0.5–1.7 for Cd, and 0.4–3.8 for Ni. The median plus double median of the absolute deviations from the median (Me + 2MAD) was used as the upper threshold of background metal concentrations. The lower threshold for the background data, which coincides with the physiologically necessary quantity of an element, was the median of 15% of the minimum values of the sample minus the double median of the absolute deviations of the median (Me15 — 2MAD15). The Me15 ± 2MAD15 range was regarded as the natural background data.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Jul 4, 2012

References

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