Synthesis and characterisation of laboratory-charred grass straw (Oryza saliva) and chestnut wood (Castanea sativa) as reference materials for black carbon quantification
Synthesis and characterisation of laboratory-charred grass straw (Oryza saliva) and chestnut wood (Castanea sativa) as reference materials for black carbon quantification
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DOI：
10.1016/j.orggeochem.2006.07.003
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发表时间：
2006-01-01
影响因子：
3
通讯作者：
Schmidt, Michael W. I.
中科院分区：
文献类型：
--
作者：
Hammes, Karen;Smernik, Ronald J.;Schmidt, Michael W. I.
我们合成了大量（类似于2公斤）的两个焦炭作为商业上可获得的参考材料的黑碳（BC）的量化。我们在450 ℃下在氮气气氛中热解栗木（Castanea sativa）和稻草（Oryza sativa），氮气气氛模拟了在中等燃烧温度下燃烧材料内部的无氧条件。炭化物主要由芳香碳（约70%）组成，具有低的H/C（约0.7）和O/C（约0.3）比以及低的比表面积（2-6 m2 g-1）。碳同位素的变化很小（
We synthesised large (similar to 2 kg) quantities of two chars for use as commercially available reference materials for the quantification of black carbon (BC). We pyrolysed chestnut wood (Castanea saliva) and grass straw (Oryza sativa) at 450 C under a N-2 atmosphere, which mimics the oxygen-free conditions on the inside of burning material at a moderate burning temperature. The charred materials were dominated by aromatic carbon (similar to 70%), had low H/C (similar to 0.7) and O/C (similar to 0.3) ratios and low surface areas (2-6 m(2) g(-1)). Isotopic changes on charring were small (