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《化学分析计量》 2020年第02期
DOI:10.3969/j.issn.1008-6145.2020.02.003
有机进样-电感耦合等离子体质谱法测定汽油中锰、铁、铅
张樱1,张遴2,王豪3,罗川3,林振兴1
1. 宁波检验检疫科学技术研究院,浙江宁波 315048; 2. 西安海关技术中心,西安 710075; 3. 宁波海关技术中心,浙江宁波 315048 
Determination of manganese, iron and lead in gasoline by organic sampling-inductively coupled plasma mass spectrometry
ZHANG Ying1, ZHANG Lin2, WANG Hao3, LUO Chuan3, LIN Zhenxing1
1. Ningbo Inspection and Quarantine Institute of Science and Technology, Ningbo 315048, China; 2. Xi'an customs technology center, Xi'an 710075, China; 3. Ningbo customs technology center, Ningbo 315048, China 
摘要:建立有机进样-电感耦合等离子体质谱法(ICP-MS) 测定汽油中锰、铁、铅含量的分析方法。以乙醇为 稀释剂,选择水性无机元素标准溶液为标准物质,采用标准加入法并加入内标校正、补偿基体干扰效应后直接稀释 进样分析,用碰撞模式消除多原子离子质谱干扰。锰、铁、铅的含量在0.00~20.00 μg/kg 范围内具有良好的线性关 系,相关系数均大于0.999,检出限分别为0.20,0.50,0.05 μg/kg。按标准加入法进行回收试验,加标回收率分别为 81.9%~95.5%,85.4%~103.1%,97.4%~101.4%,测定结果的相对标准偏差均小于6% (n=6)。该方法快速、准确, 灵敏度高,操作简便,试剂用量小,能满足实际汽油样品中微量锰、铁、铅含量的分析要求。 
Abstract:An analytical method for determination of manganese, iron and lead in gasoline by organic sampling- inductively coupled plasma mass spectrometry(ICP-MS) was established. Ethanol was used as diluent and water-based inorganic element standard solution was used as standard material. Direct dilution analysis was used after adding internal standard correction and compensating matrix interference effect, and collision mode was used to eliminate polyatomic ion mass spectrometry interference. The contents of manganese, iron, and lead had a good linear relationship in the range of 0.00-20.00 μg/kg, the correlation coefficients were all more than 0.999, and the detection limits of manganese, iron and lead were 0.20, 0.50, 0.05 μg/kg, respectively. According to the standard addition method, the recovery rates of manganese, iron and lead were 81.9%-95.5%, 85.4%-103.1%, 97.4%-101.4%, respectively. The relative standard deviation of the results was less than 6%(n=6). This method is rapid, accurate with high sensitivity, simple operation and small amount of reagent used, which can meet the requirements of the analysis of trace manganese, iron and lead content in real gasoline samples. 
关键词:有机进样;电感耦合等离子体质谱法;汽油;锰;铁;铅 
Keywords:organic sampling; inductively coupled plasma mass spectrometry; gasoline; manganese; iron; lead 
基金:海关技术规范制( 修) 订计划(2019B182) 
本文引用格式:
张樱,张遴,王豪,等. 有机进样- 电感耦合等离子体质谱法测定汽油中锰、铁、铅[J]. 化学分析计量,2020,29(2):12-16.
ZHANG Y,ZHANG L,WANG H,et al. Determination of manganese,iron and lead in gasoline by organic sampling-inductively coupled 

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