History of atmospheric lead deposition since 12,370 14C yr BP from a peat bog, Jura Mountains, Switzerland
History of atmospheric lead deposition since 12,370 14C yr BP from a peat bog, Jura Mountains, Switzerland
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DOI：
10.1126/science.281.5383.1635
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发表时间：
1998-09-11
期刊：
影响因子：
56.9
通讯作者：
Van der Knaap, WO
中科院分区：
文献类型：
--
作者：
Shotyk, W;Weiss, D;Van der Knaap, WO
自12，370碳-14年前（C-14 yr BP）以来，大气铅的连续记录保存在瑞士泥炭沼泽中。由气候变化引起的通量增加达到最大值10,590 C-14：y，BP（新仙女木）和8230 C-14 yr BP。森林砍伐和农业耕作造成的土壤侵蚀增加铅沉积后5320 C-14年BP。增加铅/钪和减少铅-206/铅-207开始3000 C-14年BP表明铅污染的开始，从采矿和冶炼，和人为来源占主导地位的铅排放至今。最大的铅通量（15.7毫克每平方米每年在公元1979年）是1570倍的自然，背景值（0.01毫克每平方米每年从8030至5320 C-14年BP）。
A continuous record of atmospheric Lead since 12,370 carbon-14 years before the present (C-14 yr BP) is preserved in a Swiss peat bog. Enhanced fluxes caused by climate changes reached their maxima 10,590 C-14: y, BP (Younger Dryas) and 8230 C-14 yr BP. Soil erosion caused by forest clearing and agricultural tillage increased Lead deposition after 5320 C-14 yr BP. Increasing lead/scandium and decreasing Lead-206/lead-207 beginning 3000 C-14 yr BP indicate the beginning of Lead pollution from mining and smelting, and anthropogenic sources have dominated Lead emissions ever since. The greatest Lead flux(15.7 milligrams per square meter per year in A.D. 1979) was 1570 times the natural, background value (0.01 milligram per square meter per year from 8030 to 5320 C-14 yr BP).