Simultaneous Determination of Aerosol Inorganic and Organic Nitrogen by Thermal Evolution and Chemiluminescence Detection

Yu，Xu1; Li，Qianfeng2; Ge，Yao2; Li，Yumin1,3; Liao，Kezheng2; Huang，Xiaohui Hilda1; Li，Jinjian1; Yu，Jian Zhen1,2

2021

10.1021/acs.est.1c04876

ENVIRONMENTAL SCIENCE & TECHNOLOGY   影响因子和分区

0013-936X

1520-5851

Inorganic nitrogen (IN) and organic nitrogen (ON) molecules constitute a significant part of atmospheric aerosol. Unlike IN, the total ON quantity remains largely unquantified due to a lack of a simple and direct measurement method. This analytical deficiency hinders the quantitative assessment of the various environmental and health effect impacts by aerosol ON. In this work, we developed an analyzer system that utilizes programmed thermal evolution of carbonaceous and nitrogenous aerosols and chemiluminescence detection coupled with the multivariate curve resolution data treatment to achieve simultaneous quantification of IN and ON. The system is capable of detecting IN and ON as low as 96 ng N per sample on a small filter aliquot (1 cm2) without any pretreatment. This method breakthrough opens the door to quantifying an important pool of aerosol N that was analytically inaccessible in the past and holds the promise to quantifying IN and ON in other environmental samples. As a demonstration, quantification of aerosol ON at an urban site in Hong Kong, China, in samples spanning over a year reveals ON constituting a significant fraction (9-52%) of the total aerosol nitrogen and having major source origins in both secondary formation and primary emissions.

aerosol composition chemical characterization nitrogenous aerosol organic aerosols thermal evolution method

SCI ; EI

英语

NI期刊

其他

Research Grants Council of Hong Kong[16304519,16307820] ; National Science Foundation of China[91843301] ; Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province[2019B121205004]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000695530700015

AMER CHEMICAL SOC

20213610856118

Chemiluminescence ; Nitrogen ; Urban growth

Urban Planning and Development:403.1 ; Atmospheric Properties:443.1 ; Light/Optics:741.1 ; Chemical Products Generally:804

ENVIRONMENT/ECOLOGY

2-s2.0-85114091403

Scopus

1.Division of Environment and Sustainability,Hong Kong University of Science and Technology,Kowloon,Clear Water Bay,999077,Hong Kong
2.Department of Chemistry,Hong Kong University of Science and Technology,Kowloon,Clear Water Bay,999077,Hong Kong
3.Department of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518000,China

Yu，Xu,Li，Qianfeng,Ge，Yao,et al. Simultaneous Determination of Aerosol Inorganic and Organic Nitrogen by Thermal Evolution and Chemiluminescence Detection[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(17):11579-11589.

Yu，Xu.,Li，Qianfeng.,Ge，Yao.,Li，Yumin.,Liao，Kezheng.,...&Yu，Jian Zhen.(2021).Simultaneous Determination of Aerosol Inorganic and Organic Nitrogen by Thermal Evolution and Chemiluminescence Detection.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(17),11579-11589.

Yu，Xu,et al."Simultaneous Determination of Aerosol Inorganic and Organic Nitrogen by Thermal Evolution and Chemiluminescence Detection".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.17(2021):11579-11589.