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标题：Formaldehyde and peroxide concentrations in Law Dome (Antarctica) firn and ice cores
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作者：R. W. Gillett ; T. D. van Ommen ; A.V. Jackson 等
期刊名称：Journal of Glaciology
印刷版ISSN：0022-1430
电子版ISSN：1727-5652
出版年度：2000
卷号：46
期号：152
页码：15-19
DOI：10.3189/172756500781833502
出版社：Cambridge University Press
摘要：Peroxide speciation and formaldehyde measurements have been made on ice cores retrieved from Law Dome, Antarctica. Measurements were made for ice deposited during four different periods: modern, pre-industrial Holocene, early Holocene and Last Glacial Maximum (LGM). The data show modern peroxide levels >50% above pre-industrial levels (at ∼1.6 μ mol L −1 ) and an absence of methyl hydroperoxide (down to a detection threshold of 0.003 μ mol L −1 ). Formaldehyde levels show a 40% increase from pre-industrial to modern times (rising from ∼0.07 μ mol L −1 to ∼0.10 μ mol L −1 ), with a further increase and possible seasonality near the surface which we associate with post-depositional processes. Peroxide levels in LGM ice are low, but formaldehyde concentrations are high (at ∼0.13 μ mol L −1 ) relative to modern levels. Similar high levels of formaldehyde are seen in early Holocene ice (∼6900 years BP).