【摘要】 文章对黑碳的基本概念、研究现状和意义、及测定方法进行了综合评述,并将辉长岩和粉晶石墨标样按不同比例配成实验标样进行黑碳测量实验,证明实验方法具有较好的可行性;对不同类型的样品进行的额外氧化实验表明其氧化损失率是各不相同的;采用化学方法测量黑色岩系岩石样品中的黑碳含量为6.5821%,通过一次性定量黑碳实验流程和平行样品分步实验,测得实验偏差为3.77%。其中HF-HCl单步处理偏差为1.99%,而K2Cr2O7氧化处理单步实验的偏差为3.11%。实验表明测量黑色岩系岩石样品中黑碳含量的化学实验方法是行之有效的。更多还原

【Abstract】 The basic concept,investigation status,research significance,the way of extraction of black carbon in sediments are summarized in this paper.Dusty gabbro and microlite graphite were prepared as specimens in different proportions and measured for black carbon in order to prove the reliability of the experiment method.The result shows the losses due to oxidation differ from one to another after extra oxidation of different kinds of examples.The contents(general 6.5821%) of black carbon in rock samples from the black rock series were chemically analyzed.After one-off ration procedure and experiment step by step,the gross relative deviation was reduced to 3.77% for the whole experiment procedure,of which 1.99% accounts for HF-HCl single treatment and 3.11% for K2Cr2O7 oxidation.The experiment indicates the analysis method is feasible.更多还原