Characterization of chemical composition and size of diesel exhaust particulate matter by LDITOF/MS

J. Suro; Q. Chen; I. M. Kennedy; T. A. Cahill; P. B. Kelly

Characterization of chemical composition and size of diesel exhaust particulate matter by LDITOF/MS

J. Suro, Q. Chen, I. M. Kennedy, T. A. Cahill, P. B. Kelly

Mechanical and Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter

3 Scopus citations

Abstract

Diesel engines are known to create large amounts of particulate matter and PAH and their derivatives. The applicability of Laser Desorption Ionization Time of Flight MS (LDIYOF/MS) as a rapid screening method in the analysis of particulate matter was investigated. Diesel soot samples were collected from an experimental injection one cylinder diesel engine aspirated at normal pressure. Reformulated California grade diesel fuel was used in the experiment. Positive ion mass spectra for diesel five particle size ranges from < 0.7 to > 2.5μm in dia showed that low mass peaks (identified as PAH) were more abundant in particles > 2.5μm, than particles < 0.07μm. High mass PAH was associated with fine particulate. Only the smallest particles had significant amounts of PAH with mass greater than 400 amu. Negative mass ion spectra for the same particle size range revealed inorganic ions OH ^-, Cl ^-, NO ₂ ^-, and NO ₃ ^-. Very fine particles < 0.07μm showed significantly higher HSO ₄ ^- than any of the spectra for larger particles.

Original language	English (US)
Title of host publication	ACS Division of Fuel Chemistry, Preprints
Pages	294-298
Number of pages	5
Volume	45
Edition	2
State	Published - 2000
Event	219th ACS National Meeting - San Francisco, CA, United States Duration: Mar 26 2000 → Mar 30 2000

Other

Other	219th ACS National Meeting
Country	United States
City	San Francisco, CA
Period	3/26/00 → 3/30/00

Keywords

Diesel soot
Polycyclic aromatic hydrocarbons
Time of flight mass spectrometry

ASJC Scopus subject areas

Energy(all)

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Suro, J., Chen, Q., Kennedy, I. M., Cahill, T. A., & Kelly, P. B. (2000). Characterization of chemical composition and size of diesel exhaust particulate matter by LDITOF/MS. In ACS Division of Fuel Chemistry, Preprints (2 ed., Vol. 45, pp. 294-298)

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title = "Characterization of chemical composition and size of diesel exhaust particulate matter by LDITOF/MS",

abstract = "Diesel engines are known to create large amounts of particulate matter and PAH and their derivatives. The applicability of Laser Desorption Ionization Time of Flight MS (LDIYOF/MS) as a rapid screening method in the analysis of particulate matter was investigated. Diesel soot samples were collected from an experimental injection one cylinder diesel engine aspirated at normal pressure. Reformulated California grade diesel fuel was used in the experiment. Positive ion mass spectra for diesel five particle size ranges from < 0.7 to > 2.5μm in dia showed that low mass peaks (identified as PAH) were more abundant in particles > 2.5μm, than particles < 0.07μm. High mass PAH was associated with fine particulate. Only the smallest particles had significant amounts of PAH with mass greater than 400 amu. Negative mass ion spectra for the same particle size range revealed inorganic ions OH -, Cl -, NO 2 -, and NO 3 -. Very fine particles < 0.07μm showed significantly higher HSO 4 - than any of the spectra for larger particles. ",

keywords = "Diesel soot, Polycyclic aromatic hydrocarbons, Time of flight mass spectrometry",

author = "J. Suro and Q. Chen and Kennedy, {I. M.} and Cahill, {T. A.} and Kelly, {P. B.}",

year = "2000",

language = "English (US)",

volume = "45",

pages = "294--298",

booktitle = "ACS Division of Fuel Chemistry, Preprints",

edition = "2",

note = "219th ACS National Meeting ; Conference date: 26-03-2000 Through 30-03-2000",

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TY - CHAP

T1 - Characterization of chemical composition and size of diesel exhaust particulate matter by LDITOF/MS

AU - Suro, J.

AU - Chen, Q.

AU - Kennedy, I. M.

AU - Cahill, T. A.

AU - Kelly, P. B.

PY - 2000

Y1 - 2000

N2 - Diesel engines are known to create large amounts of particulate matter and PAH and their derivatives. The applicability of Laser Desorption Ionization Time of Flight MS (LDIYOF/MS) as a rapid screening method in the analysis of particulate matter was investigated. Diesel soot samples were collected from an experimental injection one cylinder diesel engine aspirated at normal pressure. Reformulated California grade diesel fuel was used in the experiment. Positive ion mass spectra for diesel five particle size ranges from < 0.7 to > 2.5μm in dia showed that low mass peaks (identified as PAH) were more abundant in particles > 2.5μm, than particles < 0.07μm. High mass PAH was associated with fine particulate. Only the smallest particles had significant amounts of PAH with mass greater than 400 amu. Negative mass ion spectra for the same particle size range revealed inorganic ions OH -, Cl -, NO 2 -, and NO 3 -. Very fine particles < 0.07μm showed significantly higher HSO 4 - than any of the spectra for larger particles.

AB - Diesel engines are known to create large amounts of particulate matter and PAH and their derivatives. The applicability of Laser Desorption Ionization Time of Flight MS (LDIYOF/MS) as a rapid screening method in the analysis of particulate matter was investigated. Diesel soot samples were collected from an experimental injection one cylinder diesel engine aspirated at normal pressure. Reformulated California grade diesel fuel was used in the experiment. Positive ion mass spectra for diesel five particle size ranges from < 0.7 to > 2.5μm in dia showed that low mass peaks (identified as PAH) were more abundant in particles > 2.5μm, than particles < 0.07μm. High mass PAH was associated with fine particulate. Only the smallest particles had significant amounts of PAH with mass greater than 400 amu. Negative mass ion spectra for the same particle size range revealed inorganic ions OH -, Cl -, NO 2 -, and NO 3 -. Very fine particles < 0.07μm showed significantly higher HSO 4 - than any of the spectra for larger particles.

KW - Diesel soot

KW - Polycyclic aromatic hydrocarbons

KW - Time of flight mass spectrometry

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VL - 45

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EP - 298

BT - ACS Division of Fuel Chemistry, Preprints

T2 - 219th ACS National Meeting

Y2 - 26 March 2000 through 30 March 2000

ER -