Optimization and validation of a liquid chromatography method with fluorescence detection for the determination of amines in fine atmospheric particulate matter DOI Creative Commons

Thais Fernanda Alves,

Priscila Brugin,

Rafael Junqueira Leal

et al.

Caderno Pedagógico, Journal Year: 2024, Volume and Issue: 21(8), P. e6484 - e6484

Published: Aug. 7, 2024

Primary amines are pollutants present in the atmosphere gaseous form or as particulate matter, emitted mainly by industrial sector, vehicles, and biomass burning. There is concern about concentration of atmosphere, consequences long-term exposure cannot be predicted. The objective study optimization subsequent validation a method for determining fine atmospheric using liquid chromatography fluorescence detection. derivatization process was carried out through 2² factorial design to improve sensitivity method, that lower concentrations reagents o-phthaldialdehyde 2-mercaptoethanol result more pronounced analytical signal. chromatographic allowed separation four primary within 20 minutes run time solvents such sodium acetate, methanol tetrahydrofuran. showed good performance according results selectivity linearity, with detection limits 0.121 0.284 ng m-³ quantification 0.398 0.938 m-³. precision (>5%) recoveries (82 117%) recommended values. Therefore, optimized application real samples amines, obtaining Brazil comparable other regions around world.

Language: Английский

Characteristics, Origins, and Atmospheric Processes of Amines in Fine Aerosol Particles in Winter in China DOI
Tang Liu, Yu Xu, Qibin Sun

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2023, Volume and Issue: 128(14)

Published: July 9, 2023

Abstract Amines affect particle formation, aerosol acidity, nitrogen cycle, and climate change. However, little is known about the temporal spatial differences in composition, source, formation process of amines fine particulate matter (PM 2.5 ) different regions China. Seven (amine salts) were investigated PM collected Yangtze River Delta (YRD, Shanghai Nanjing), Pearl (PRD, Guangzhou), northern China (Xi'an Haerbin), background (Puding) areas winter 2017–2018. Methylamine was dominant amine species at YRD, China, sites, while diethylamine dominated PRD site; moreover, mass concentration fraction lowest site. These results could be attributed to changes sources atmospheric processes. Further, coal combustion biomass burning found important contributors cities winter. The contribution weakened other urban sites. In contrast, abundance site largely controlled by biogenic sources. Acid‐base chemistry displacement mechanism tightly associated with salts all particular, degradation hydroxyl radical (•OH) significant Nanjing, Guangzhou, Xi'an, Haerbin insignificant photochemical sites can explained differentiated sources, meteorological conditions, •OH levels. Overall, our findings deepen understanding origins processes amines.

Language: Английский

Citations

26
Characteristics and origins of fine particulate amines at a coastal mountain site in northern China in spring DOI
Mingxuan Liu, Xinfeng Wang, Zhiyi Liu

et al.

Atmospheric Environment, Journal Year: 2024, Volume and Issue: 321, P. 120365 - 120365

Published: Jan. 22, 2024

Language: Английский

Citations

4
Measurement report: Occurrence of aminiums in PM2.5 during winter in China – aminium outbreak during polluted episodes and potential constraints DOI Creative Commons
Yu Xu, Tang Liu, Yi-Jia Ma

et al.

Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(18), P. 10531 - 10542

Published: Sept. 23, 2024

Abstract. Amines and aminiums play an important role in particle formation, liquid-phase reactions, climate change have attracted considerable attention over the years. Here, we investigated concentrations compositions of PM2.5 11 Chinese cities during winter, focusing on characteristics polluted days key factors influencing aminium outbreak. Monomethylaminium was dominant species most cities, except Taiyuan Guangzhou, followed by dimethylaminium. Diethylaminium dominated total Guangzhou. Thus, main amine sources Guangzhou were significantly different from those other cities. The (TAs) increased days, while relatively weak outbreaks occurred Xi'an Beijing. Additionally, TAs Beijing insignificantly correlated with major acidic aerosol components, opposite pattern observed nine acid–base chemistry associated formation all Based sensitivity analysis : ammonium ratio to changes, as well excluding effects relative humidity atmospheric oxidation, proposed possibility competitive uptake ammonia versus amines aerosols or displacement (constraining outbreaks). Overall, this study deepens understanding spatiotemporal differences characteristic China. However, particles form relevant require further mechanistic research.

Language: Английский

Citations

4
Characteristics of aerosol aminiums over a coastal city in North China: Insights from the divergent impacts of marine and terrestrial influences DOI
Y. Yang,

Mingge Sun,

Guanru Wu

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 918, P. 170672 - 170672

Published: Feb. 3, 2024

Language: Английский

Citations

0
Optimization and validation of a liquid chromatography method with fluorescence detection for the determination of amines in fine atmospheric particulate matter DOI Creative Commons

Thais Fernanda Alves,

Priscila Brugin,

Rafael Junqueira Leal

et al.

Caderno Pedagógico, Journal Year: 2024, Volume and Issue: 21(8), P. e6484 - e6484

Published: Aug. 7, 2024

Primary amines are pollutants present in the atmosphere gaseous form or as particulate matter, emitted mainly by industrial sector, vehicles, and biomass burning. There is concern about concentration of atmosphere, consequences long-term exposure cannot be predicted. The objective study optimization subsequent validation a method for determining fine atmospheric using liquid chromatography fluorescence detection. derivatization process was carried out through 2² factorial design to improve sensitivity method, that lower concentrations reagents o-phthaldialdehyde 2-mercaptoethanol result more pronounced analytical signal. chromatographic allowed separation four primary within 20 minutes run time solvents such sodium acetate, methanol tetrahydrofuran. showed good performance according results selectivity linearity, with detection limits 0.121 0.284 ng m-³ quantification 0.398 0.938 m-³. precision (>5%) recoveries (82 117%) recommended values. Therefore, optimized application real samples amines, obtaining Brazil comparable other regions around world.

Language: Английский

Citations

0