摘要
对原子吸收分光光度法(AAS)和电感耦合等离子原子发射光谱法(ICP-AES)在测定动力用煤中碱金属的含量进行了研究,并就两种检测方法的测定结果进行了对比.研究表明:AAS测定Na+、K+的RSD分别为5.77%、5.30%,加标回收率分别为96.46%、94.42%;ICP-AES测定Na+、K+的RSD分别为8.36%、8.86%,加标回收率分别为96.83%、96.86%.AAS测定时需对样品进行适当稀释,ICP-AES可直接测定原液,两种仪器测试方法不存在显著性差异,均可用于煤中碱金属元素的测定.研究结果对准确了解煤质元素特性指标有显著的指导意义.
The determination of alkali metals in coal was researched by AAS and ICP-AES, and the comparision was studied on the basis of the two methods. The results show that the RSDs of AAS in the determination of Na＋and K＋were 5.77% and 5.30%, the recovery rate of standard were 96.46% and 94.42%;The RSDs of ICP-AES in the determination of Na＋and K＋were 8.36% and 8.86%, the recovery rate of standard were 96.83% and 96.86%. The solution should be dilute appropriatly in the AAS, and the solution can be directly determined in the ICP-AES. There was no significant difference between the two methods,both can be used in the determination of alkali metals in coal. The results have a significant guidance for understanding accurately the quality characteristic parameters of coal.
出处
《新疆大学学报（自然科学版）》
CAS
北大核心
2017年第3期303-307,共5页
Journal of Xinjiang University(Natural Science Edition)
基金
国家科技支撑项目"燃用新疆准东煤60-100万千瓦等级超临界锅炉关键技术开发及示范项目"(2015BAA04B00)
