摘要
采用干法灰化处理北疆稠油和青海原油样品,建立了通过电感耦合等离子体发射光谱（ICP-OES）仪测定其中重金属元素含量的方法.选择适当的元素分析波长,确定仪器测定的最优高频功率和雾化压力,制备2％～3％ HNO3介质的标准溶液和样品溶液,通过对实际样品金属含量的分析,考察该方法的准确度和精密度.在选定的最优条件下,测得样品中Fe,Ni,Cu,V的回收率为90.3％～108.0％,符合90％～110％的要求范围,且该方法的检出限和相对标准偏差均较低.
The heavy metal elements in crude oil samples pretreated by dry ashing were determined lay inductively coupled plasma optical emission spectrometry （ICP-OES）. The primary parameters of ICP-OES, such as, wavelength for element analysis, radio frequency （RF）, atomization pressure, type and concentration of acid solutions were optimized using standard solutions prior to analyze the practical samples. The accuracy and precision of the method were investigated by analyzing the results of crude oil samples. Under the optimum conditions, the recoveries of Fe, Ni, Cu and V determined by this method are 90. 3%--108.0%, which is within the scope of standard （90%--110%）. The detection limit of the method and the relative standard deviations are lower.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2014年第2期90-94,共5页
Petroleum Processing and Petrochemicals
