Prehistoric and modern records of Hg in peats from the lower Amur River basin, eastern Asia, were investigated. The Hg accumulation rates (AR) of two ¹⁴C-dated cores from Holocene raised and blanket peats were determined. The low and monotonous Hg AR values of the raised peats determined in the lower part of the core (mean 1.9 μg Hg per m² per year) represent prehistoric Hg inputs from the atmosphere. A sharp increase in Hg AR was determined upward of 52 cm depths (∼1600 year BP) (max 17.0 Hg μg per m² per year), which apparently reflects the modern increase in global Hg emissions. The Hg loads in the blanket peats were apparently defined by a combined input from the atmosphere and the watershed followed by diagenetic redistribution. One major peak (max 12.0 μg Hg per m² per year) coincided with increased C_org contents in herbaceous and sphagnum peat formed in the warming and wet climate of the early Holocene. Another peak (11.8 μg Hg per m² per year) correlated both with the accumulation of Fe/Mn compounds and the warm and wet climate of the Holocene Climate Optimum. Minima Hg AR values coincided with the weakening of the East Asia Monsoon and cold and dry climate periods. In the uppermost layers, the Hg AR increased again up to 7.3 μg Hg per m² per year, most likely due to anthropogenic pollution.

中文翻译：

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东亚阿穆尔河下游盆地的凸起泥炭和覆盖泥炭中的史前汞含量和技术原因含量

对亚洲东部阿穆尔河流域下游泥炭中的史前和现代汞记录进行了调查。测定了来自全新世凸起泥炭和覆盖层泥炭的两个¹⁴ C 定年岩心的汞积累率 (AR) 。在核心下部测定的凸起泥炭的低且单调的汞AR值（平均每年每米^{2 1.9微克汞）代表了来自大气的史前汞输入。确定了 52 cm 深度以上（距今 1600 年）汞 AR 急剧增加（每年每 m 2}最大 17.0 Hg μg ），这显然反映了现代全球汞排放量的增加。覆盖层泥炭中的汞含量显然是由大气和流域的综合输入决定的，随后是成岩作用的重新分布。一个主要峰值（每年每 m ²最大 12.0 μg Hg）与全新世早期温暖潮湿气候中形成的草本和泥炭土中C _org含量增加同时发生。另一个峰值（11.8 μg Hg/m ²每年）与铁/锰化合物的积累和全新世气候最适期温暖湿润的气候相关。汞的最低 AR 值恰逢东亚季风减弱和寒冷干燥的气候时期。在最上层，Hg AR 再次增加至每年每 m ^{2 7.3 μg Hg，很可能是由于人为污染。}