摘要
提出了氧弹燃烧-离子色谱法测定机油样品中Cl、S、P的方法.机油经氧弹燃烧分解,用NaOH-H2O2吸收,离子色谱法以28 mmol/L的KOH为淋洗液,IonPac AS23型阴离子分析柱,抑制电导检测,可同时测定机油中Cl、S、P,各被测离子线性关系良好,相关系数为0.9995~0.9999,测定结果标准偏差小于3.75%,加标回收率为97.1%~101.20%.此法样品前处理操作简便,准确度高,重现性好.
A method was proposed for the determination of chlorine, sulfur and phosphorus in engine oil by oxygen bomb combustion-Ion Chromatography. Engine oil was first burnt in oxygen bomb,them the combustion products were absorbed in NaOH--H2O2 solution, which was analyzed by Ion Chromatography using 28 mmol/L KOH as mobile phase, IonPac AS23 separation column and suppressed conductivity detection. The relative standard deviation of chlorine, sulfur and phosphorus are lower than 3.75% ,and the correlation coefficient range for the target ions and the recovery of this method are 0. 999 5--0. 999 9 and 97.1%--101.2%, respectively. The method is simple, accurate and good reproducibility for determining of chlorine,sulfur and phosphorus in engine oil.
出处
《武汉工程大学学报》
CAS
2009年第7期38-40,共3页
Journal of Wuhan Institute of Technology
关键词
氧弹
离子色谱
机油
氯
磷
硫
oxygen bomb
ion Chromatography
engine oil
chlorine
sulfur
phosphorus
