ICP-OES法测定残渣燃料油中铝含量不确定度的评定  

Evaluation of Uncertainty in Determination of Aluminium in Residual Fuel by ICP-OES

作　　者：张文媚 林志生 王荣华 Zhang Wenmei;Lin Zhisheng;Wang Ronghua(National Quality Supervision&Testing Center for Petroleum and Petrochemical Products(Guangdong),Huizhou 516003,China)

机构地区：[1]国家石油石化产品质量监督检验中心(广东),广东惠州516003

出　　处：《广东化工》2021年第6期129-130,139,共3页Guangdong Chemical Industry

摘　　要：GB/T 34099-2017《残渣燃料油中铝、硅、钒、镍、铁、钠、钙、锌及磷含量的测定电感耦合等离子发射光谱法》适用于测定残渣燃料油杂质元素含量[1],其中铝元素测定范围为5.0~150mg/kg。本文介绍采用GB/T34099-2017将样品燃烧灰化溶解定容后采用无机进样系统测试铝含量的不确定度,选取残渣燃料油作为实验样品,从试验各个环节评定了不确定度的来源,对各个不确定度进行了评定,并计算了扩展不确定度。当试样的铝含量为24.62 mg/kg时,其扩展不确定度为1.50 mg/kg(k=2)。GB/T34099-2017《Determination of aluminium, silicon, vanadium, nickel, iron, sodium, calcium, zinc and phosphorus in residual fuel oil-Inductively coupled plasma emission spectrometry method》 is suitable for the determination of impurity elements in residual fuel oil.Samples containing 5.0 mg/kg to 150 mg/kg total aluminium can be analyzed. This article describes GB/T34099-2017 direct injection system to determine the uncertainty of total aluminium in residual fuel. Selected a diesel as sample, the sources of uncertainty were evaluated from the experimental principle. Calculated each uncertainty and expanded uncertainty. When the total aluminium in residual fuel is 24.62 mg/kg, the expanded uncertainty is 1.50 mg/kg(k=2).

关 键 词：燃料油 铝 不确定度 

分 类 号：O65[理学—分析化学]