CAJ | 학술논문

建立了火焰原子吸收法测定煤渣和煤质活性炭中微量金属元素铁、钙、镁、锌、铅含量的方法。煤渣样品采用干灰化后消解，煤质活性炭样品采用稀酸提取进行处理。煤渣中铁、钙、镁元素用标准曲线法定量，活性炭中铁、锌、铅则采用标准加入法定量以减少基体干扰的影响。样品测定结果与文献报道相一致，煤渣尤其是燃烧处理后的煤渣中微量元素含量较高，而煤质活性炭通过复杂工艺处理后，微量元素大大减少。样品中被测元素的加标回收率在88.5%～105.5%之间，测定结果的相对标准偏差小于2%(n=7)，两类样品中6种元素的检出限分别为0.010，0.015，0.005，0.012，0.013，0.110 mg／L。火焰原子吸收法测定微量元素准确度高、重现性好，适合煤渣和活性炭中微量金属元素的测定。
건립료화염원자흡수법측정매사화매질활성탄중미량금속원소철、개、미、자、연함량적방법。매사양품채용간회화후소해，매질활성탄양품채용희산제취진행처리。매사중철、개、미원소용표준곡선법정량，활성탄중철、자、연칙채용표준가입법정량이감소기체간우적영향。양품측정결과여문헌보도상일치，매사우기시연소처리후적매사중미량원소함량교고，이매질활성탄통과복잡공예처리후，미량원소대대감소。양품중피측원소적가표회수솔재88.5%～105.5%지간，측정결과적상대표준편차소우2%(n=7)，량류양품중6충원소적검출한분별위0.010，0.015，0.005，0.012，0.013，0.110 mg／L。화염원자흡수법측정미량원소준학도고、중현성호，괄합매사화활성탄중미량금속원소적측정。
A method for measurement of metal microelements in cinders and activated carbon,such as Fe, Ca, Mg, Zn and Pb by flame atomic absorption method was established. Pretreatment procedure was studied. Cinders was treated with dry ashing and then digested,activated carbon was treated with acid extraction method. Metal microelements such as Fe,Ca and Mg in cinder were measured using standard curve method,while microelements such as Fe,Zn and Pb in activated carbon from coal were measured based on standard addition method,in order to reduce the interference of the basic. Results detected by the method were in accordance with existed references. Microelements contents were higher in cinders,especially after burning. In comparison,microelements dropped dramatically in activated carbon, due to the complex processing procedure. Recoveries of each element ranged from 88.5% to 105.5%, and the relative standard deviation was less than 2% (n=7). The detecting limits of the six elements were 0.010,0.015,0.005,0.012,0.013, 0.110 mg/L respectively, in two kinds of the specimen. It can be concluded that the flame atomic absorption method is accurate,convenient, it is suitable for the measurement of metal microelements in cinders and activated carbon.