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Heavy Metals in the Snow and Ice Cover of the Barents Sea

机译：巴伦支海冰雪覆盖中的重金属

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摘要

In September-October 1998,during the expedition of R/V Akademik Fedorov (cruise 14) to the Barents Sea,in the region of 82° N between the Spitsbergen and Novaya Zemlya archipelagos,samples of snow and ice were collected in four test areas.By means of atomic absorption with an electothermal atomizer (onboard the vessel),in filtered (dissolved form) and unfiltered (the sum of dissolved and particulate forms) samples of snow melt and ice,Fe,Mn,Cu,Cr,Ni,Co,Pb,and Cd were determined in order to estimate the level of potential contamination of the snow and ice with these metals.Excluding the data on Ni,Cd (and probably Cu) in the ice,which were regarded to be unsatisfactory because of the probable contamination of the ice samples during the ice layer drilling,the concentrations of all the elements in the snow and ice of the northern part of the Barents Sea appeared to be close to their background values or below.An attempt to identify the main sources of the metal supply to the snow from the atmosphere by comparison of the ratios of the metal particulate form to the total content in the snow of the Barents Sea and the same ratios in the snow samples from clean regions of Finland and from contaminated areas of the Kola Peninsula showed that the aerosols in the area of the expedition were supplied into the Barents Sea atmosphere from different sources,both natural and anthropogenic.
机译：1998年9月至10月，在R / V Akademik Fedorov（巡洋舰14）远征到巴伦支海期间，在Spitsbergen和Novaya Zemlya群岛之间的北纬82°区域，在四个测试区域中收集了冰雪样品通过电热雾化器（在船上）进行原子吸收，以融雪和冰，铁，锰，铜，铬，镍，冰，铁，镍的样品进行过滤（溶解形式）和未过滤（溶解形式和颗粒形式的总和）确定Co，Pb和Cd的目的是估计这些金属对雪和冰的潜在污染程度。不包括冰中Ni，Cd（可能还有Cu）的数据，由于这些数据，不能令人满意。在冰层钻探过程中冰样品可能受到污染，巴伦支海北部雪和冰中所有元素的浓度似乎都接近或低于背景值。试图确定主要来源从雪中向雪中供应金属通过比较金属颗粒形式与巴伦支海雪中总含量的比例以及来自芬兰清洁地区和可乐半岛受污染地区的雪样中相同比例的大气，表明该地区的气溶胶这次远征是从自然和人为的不同来源供应到巴伦支海的大气层的。

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