Tracking lead origin in the Yellow River Estuary and nearby Bohai Sea based on its isotopic composition
Tracking lead origin in the Yellow River Estuary and nearby Bohai Sea based on its isotopic composition
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根据同位素组成追踪黄河口和附近渤海的铅来源
DOI：
10.1016/j.ecss.2015.06.010
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发表时间：
2015-09-20
影响因子：
2.8
通讯作者：
He, Lian-hua
中科院分区：
文献类型：
--
作者：
Hu, Ning-jing;Huang, Peng;He, Lian-hua
对黄河口及渤海海域表层沉积物中的铅含量和铅同位素(铅-204、铅-206、铅-207和铅-208)进行了测定，以研究该地区的铅源。结果表明，黄河河口和莱州湾北部沉积物中的铅主要来自黄河流域，是岩性沉积物(岩石风化)聚集的结果。莱州湾南部近岸海域沉积物中的铅既有自然来源，也有人为来源。由于莱州湾的水流影响，中环填海工程米河口附近排出的污水并没有进一步延伸至中、外货架。总铅浓度变化范围为14.5~30.4微克/克，平均浓度为20.1+/-4.2微克/克，黄河口及渤海附近海域未发现明显的铅污染。然而，一些地点的铅污染是通过铅同位素比值来指示的。(C)2015爱思唯尔有限公司。保留所有权利。
The Pb concentration and Pb isotopes (Pb-204, Pb-206, Pb-207, and Pb-208) in surface sediments from the Yellow River Estuary and nearby Bohai Sea have been determined to investigate the Pb sources in this area. Results showed that Pb in the Yellow River Estuary and northern Laizhou Bay (YRE-NL) sediments was mainly from the Yellow River catchment as a consequence of lithogenic sediments (from rock weathering) accumulation. However, Pb in the coastal area of southern Laizhou Bay (CSLB) sediments was from both natural and anthropogenic sources. Sewage discharged near the Mihe mouth of the CSLB did not extend further to the middle and outer shelves because of the current in Laizhou Bay. The total Pb concentration varied from 14.5 to 30.4 mu g/g with an average concentration of 20.1 +/- 4.2 mu g/g. Thus, significant Pb pollution was not observed in the Yellow River Estuary and nearby Bohai Sea. However, Pb contamination in some sites was indicated by Pb isotope ratios. (c) 2015 Elsevier Ltd. All rights reserved.