压力溶样/ICP-AES同时测定石油及其产品中的硫和磷  

SIMULTANEOUS DETERMINATION OF SULPHUR AND PHOSPHORUS CONTENT IN PETROLEUM AND ITS PRODUCTS BY ICP-AES

作　　者：张铮[1] 

机构地区：[1]石油化工科学研究院

出　　处：《石油炼制》1992年第7期44-47,共4页

摘　　要：石油或石油产品的样品用硝酸和过氧化氢进行高压密封溶样,使其变成无机水溶液,应用高频电感耦合等离子体发射光谱法(ICP-AES)同时测定硫、磷含量。本文研究了溶解样品的条件和仪器测定条件。该方法的磷回收率为98～102％,硫回收率为99～102％,当硫、磷含量大于0.01％时,测定硫、磷的相对标准偏差分别为1.5％和6.6％。The samples of petroleum or petroleum products were digested with HNO_3 and H_2O_2 in a pressuri- zed stainless steel bomb. Sulphur and phosphorus contents of each sample were determined simultune- ously by ICP-AES. The oprating conditions of digestion and of determination by instrument were in- vestigated. The recovery was found to be 98～102% for both phosphorus and sulphur. The relative standard deviations are 1.5% and 6.6% for sulphur and phosphorus respectively when their contents are both above 0.01%.

关 键 词：硝化 磷 硫含量 

分 类 号：TE622.5[石油与天然气工程—油气加工工程]