Effects of pretreatment temperature on the analysis of size-fractionated aerosol particles using ToF-SIMS

Jinze Li, Wenjing Xie, Lu Tao Weng, Chak K. Chan, Chi Ming Chan

Research output: Contribution to journalArticlepeer-review


Size-fractionated aerosol particles were collected with a MOUDI 10-stage cascade impactor from an urban roadside place in a downtown area of Hong Kong. Fine aerosol particulate samples from stage 6 (aerodynamic particle diameter between 0.56 and 1 μm) and stage 9 (aerodynamic particle diameter between 0.10 and 0.18 μm) were pretreated at a chosen temperature, including −100°C, −50°C, 25°C, and 60°C, in a load lock chamber and then analyzed using time-of-flight secondary ion mass spectrometry (ToF-SIMS) at the same temperature (−100°C). Principal component analysis (PCA) was applied to further analyze ToF-SIMS spectra of aerosol particles with different pretreatment temperatures from two selected stages. ToF-SIMS results showed that the intensities of aliphatic hydrocarbon ions such as C4H7 + and C4H9 + and amine ions such as C2H8N+ and C4H12N+ decreased with an increase of the pretreatment temperature under ultrahigh vacuum conditions. We have shown that analyses of this type of aerosol particles using ToF-SIMS should not be conducted at ambient temperature but at low temperature (eg, −50°C). In addition, we also developed a procedure that can be used to analyze aerosol particle samples under ultrahigh vacuum environment.
Original languageEnglish (US)
Pages (from-to)264-271
Number of pages8
JournalSurface and Interface Analysis
Issue number5
StatePublished - May 1 2020
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-07-06

ASJC Scopus subject areas

  • Materials Chemistry
  • Surfaces, Coatings and Films
  • General Chemistry
  • Surfaces and Interfaces
  • Condensed Matter Physics


Dive into the research topics of 'Effects of pretreatment temperature on the analysis of size-fractionated aerosol particles using ToF-SIMS'. Together they form a unique fingerprint.

Cite this