液氮浓缩富集气相色谱脉冲氦离子化检测器测定燃料氢中甲醛  

Determination of Formaldehyde in Fuel Hydrogen by liquid Nitrogen Concentration Gas Chromatography Pulsed Helium Ionization Detector

作　　者：李朝清 纪艳艳 王祥科 LI Chaoqing;JI Yanyan;WANG Xiangke

机构地区：[1]朗析仪器(上海)有限公司,上海201702

出　　处：《化工设计通讯》2024年第1期15-18,共4页Chemical Engineering Design Communications

摘　　要：氢燃料电池汽车因其零排放、续航里程高、环境适应性强等优势,一直被视为未来新能源汽车发展的主要方向。氢中甲醛对燃料电池有毒害作用,影响着燃料电池性能和使用寿命。高纯氢气稀释甲醛模拟燃料氢中甲醛检出限测定,以液氮容量为主要影响因素研究液氮浓缩富集测定甲醛检出限为3×10^(-9),RSD为2.7%,结果远超于GB/T 37244—2018中规定的甲醛检出限。满足相关检测规范要求,进一步优化了氢中甲醛测定方法。Hydrogen fuel cell vehicles have been regarded as the main direction of future development of new energy vehicles because of their advantages of zero emissions,high driving range and strong environmental adaptability.Formaldehyde in hydrogen is toxic to fuel cells and affects the performance and service life of fuel cells.The detection limit of formaldehyde in simulated fuel hydrogen was determined by diluting formaldehyde with high purity hydrogen.With liquid nitrogen capacity as the main infl uence factor,the limit of formaldehyde detection in liquid nitrogen concentration and concentration determination was 3×10^(-9)and RSD was 2.7%.The results far exceeded the formaldehyde detection limit specified in GB/T 37244—2018.The method for determination of formaldehyde in hydrogen was further optimized to meet the requirements of relevant detection standards.

关 键 词：燃料氢 甲醛 液氮浓缩 检出限 气相色谱 

分 类 号：R123.3[医药卫生—环境卫生学]