活性含氮化合物标准物质的研究进展  

Research Progress on Reference Materials for Reactive Nitrogenous Compounds

作　　者：李春萌 王红红 赵鑫蕊 韩笑 毕哲 王德发[1] LI Chunmeng;WANG Honghong;ZHAO Xinrui;HAN Xiao;BI Zhe;WANG Defa(National Institute of Metrology,Beijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《计量科学与技术》2025年第1期25-34,共10页Metrology Science and Technology

基　　金：中国计量科学研究院创新探索项目(AKYCX2313);国家重点研发计划项目(2023YFF0724400)。

摘　　要：活性含氮化合物对于大气化学转化至关重要,其来源的去除将会直接影响大气氮循环和二次污染物的生成。活性含氮化合物在大气中物种丰富、浓度分布多样并且部分性质活跃,因此实现活性含氮化合物的准确测量是目前研究的热点和难点。总结了NO、NO_(2)、PAN、HONO、HNO_(3)、ANs和N_(2)O_(5)等典型活性含氮化合物的测量技术,并对其气态标准气体的研发进行了总结介绍。研究表明质谱技术、光谱技术和湿化学技术已经广泛应用于各类活性含氮化合物的在线测量,其测量不确定度分布在(4~30)%,均需要定值准确的标准源进行参数标定和日常维护,但是除NOx外,多数活性含氮化合物的标准源及参数校正仍整体缺乏相应的标准规范。进一步对目前的发展挑战和方向进行了汇总,并就后续的研究进行展望。Reactive nitrogenous compounds play a crucial role in atmospheric chemistry,as their removal and deposition processes directly influence the atmospheric nitrogen cycle and the formation of secondary pollutants.Due to their abundance in the atmosphere,diverse concentrations,and active chemical properties,the accurate measurement of these compounds remains a significant challenge in current research.This study provides a comprehensive overview of the measurement techniques for typical reactive nitrogenous compounds,including NO,NO_(2),PAN,HONO,HNO_(3),ANs,and N_(2)O_(5),along with recent progress in the development of gaseous standard materials for these compounds.It highlights that mass spectrometry,spectroscopy,and wet chemistry have been widely applied for in situ measurements of various reactive nitrogenous compounds,with measurement uncertainties ranging from 4%to 30%.These methods require reliable standard sources for parameter calibration and routine maintenance.However,except for NOx,most reactive nitrogenous compounds still lack standardized sources and parameter calibration protocols.This review further outlines the challenges and future directions in this field,offering insights into subsequent research developments.

关 键 词：计量学 活性含氮化合物 测量技术 标准物质 不确定度 动态发生 

分 类 号：TB99[一般工业技术—计量学]