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煤灰中主要是二氧化硅、氧化铝、氧化钙、氧化镁、氧化钠、氧化钾、氧化铁及硫、磷等化合物。煤灰中主要元素的测定,过去主要是以化学法或比色法进行的,但手续较烦,测定时间较长。我们为配合能源开发及煤化学的工作,进行了用原子吸收法测定煤灰组成的工作,此工作的重点主要集中在样品的前处理及对难熔元素硅,铝的测定,其它金属元素的测定与一般常见相同,非金属元素硫、磷的测定在此暂不考虑。
Coal ash is mainly silica, alumina, calcium oxide, magnesium oxide, sodium oxide, potassium oxide, iron oxide and sulfur, phosphorus and other compounds. Determination of the main elements of coal ash, the past mainly by chemical or colorimetric method, but more annoying procedures, the determination of longer. In order to cooperate with the development of energy and coal chemistry, we carried out the work of determining the composition of coal ash by atomic absorption. The focus of this work mainly focused on the pretreatment of samples and the determination of refractory elements, such as silicon and aluminum, other metal elements Determination of the same with the common, non-metallic elements of sulfur, phosphorus determination in this temporarily not considered.