轻质油品中磷元素标准物质研制  

Development of Reference Materials for Phosphorus Element in Light Oil Products

作　　者：任丹华 张艾蕊[1] 王梅玲[1] 王向楠 王海[1] REN Danhua;ZHANG Airui;WANG Meiling;WANG Xiangnan;WANG Hai(National Institute of Metrology,Beijing 100029,China;Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029 [2]北京化工大学,北京100029

出　　处：《计量科学与技术》2022年第10期41-45,9,共6页Metrology Science and Technology

基　　金：入境重要战略物质质量保障体系研究及应用示范(2021YFF0602604);中央级公益性科研院所基本科研业务费专项项目(AKY1505)。

摘　　要：研制了一种满足国家标准,用于测量轻质油品中磷元素含量的异辛烷中磷元素标准物质(GBW11211)。该标准物质以异辛烷和磷元素标准烃油为原料,采用电感耦合等离子体质谱法(ICP-MS)和电感耦合等离子体发射光谱法(ICP-OES)作为标准物质的定值方法,多家实验室联合定值,并对异辛烷中磷元素标准物质的均匀性和稳定性进行评估。结果表明,所研制的异辛烷中磷元素标准物质的标准值为0.44 mg·kg^(-1),扩展不确定度为0.05 mg·kg^(-1)(k=2),有效期为36个月。该标准物质可用于相关油品的质量控制及方法验证等。In this paper, a certified reference material(CRM) for phosphorus in isooctane(GBW11211) was developed to meet the national standard for measuring the content of phosphorus in light oil. The CRM was prepared with isooctane and phosphorus element standard hydrocarbon oil as raw materials, and inductively coupled plasma mass spectrometry(ICPMS) and inductively coupled plasma optical emission spectrometry(ICP-OES) were used as the characterization methods for the CRM, which were jointly characterized by several laboratories, and the homogeneity and stability of the CRM for elemental phosphorus in isooctane were evaluated. The results show that the certified value of the CRM of the phosphorus component in isooctane is 0.44 mg·kg^(-1), with an extended uncertainty of 0.05 mg·kg^(-1)(k=2), and the validity period is 36 months. The CRM can be used for quality control and method verification of related oil products.

关 键 词：汽油 磷 异辛烷 标准物质 不确定度 

分 类 号：TE626.21[石油与天然气工程—油气加工工程] O657[理学—分析化学]