FULLERENES IN THE CRETACEOUS-TERTIARY BOUNDARY-LAYER
FULLERENES IN THE CRETACEOUS-TERTIARY BOUNDARY-LAYER
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DOI：
10.1126/science.265.5172.645
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发表时间：
1994-07-29
期刊：
影响因子：
56.9
通讯作者：
SMALLEY, RE
中科院分区：
文献类型：
--
作者：
HEYMANN, D;CHIBANTE, LPF;SMALLEY, RE
高压液相色谱和紫外可见光谱分析对新西兰两个白垩纪-第三纪（K-T）边界点样品的甲苯提取物进行了分析，发现在相关烟尘中存在浓度为百万分之0.1至0.2的C-60。该技术还证实，在环境大气条件下，在普通火焰的烟灰中产生的富勒烯数量相似。因此，K-T边界层中的C-60可能起源于与6500万年前终止中生代的灾难性撞击事件有关的大面积野火。
High-pressure liquid chromatography with ultraviolet-visible spectral analysis of toluene extracts of samples from two Cretaceous-Tertiary (K-T) boundary sites in New Zealand has revealed the presence of C-60 at concentrations of 0.1 to 0.2 parts per million of the associated soot. This technique verified also that fullerenes are produced in similar amounts in the soots of common flames under ambient atmospheric conditions. Therefore, the C-60 in the K-T boundary layer may have originated in the extensive wildfires that were associated with the cataclysmic impact event that terminated the Mezozoic era about 65 million years ago.