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首页> 外文期刊>Russian journal of marine biology >Determination of the Background Ranges of Trace Metals in the Brown Alga Sargassum pallidum from the Northwestern Sea of Japan
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Determination of the Background Ranges of Trace Metals in the Brown Alga Sargassum pallidum from the Northwestern Sea of Japan

机译：日本西北海褐藻Sargassum pallidum中微量金属的背景范围的确定

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摘要

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 (Me_(15) - 2MAD_(15)). The Me_(15) ± 2MAD_(15) range was regarded as the natural background data.
机译：在1995-2008年期间，从日本海西北部的褐藻Sargassum pallidum样品中计算了Fe，Mn，Zn，Cu，Pb，Cd和Ni的背景浓度。我们发现铁的干质量为60-672μg/ g，锰的干质量为12-455，锌的6.2-23.8，铜为0.9-3.9，铅为0-5.5，镉为0.5-1.7，镍为0.4-3.8。中位数加上与中位数（Me + 2MAD）的绝对偏差的两倍中位数用作背景金属浓度的上限。背景数据的下限阈值与元素的生理必需量一致，是样本最小值的15％的中位数减去中位数绝对偏差的两倍中位数（Me_（15）-2MAD_ （15））。 Me_（15）±2MAD_（15）范围被视为自然背景数据。

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