Determination of nitro polynuclear aromatic hydrocarbons in air and diesel particulate matter using liquid chromatography with electrochemical and fluorescence detection

Journal Article · Mon Feb 01 04:00:00 UTC 1988 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00154a001· OSTI ID:5417464

MacCrehan, W A; May, W E; Yang, S D; Benner, Jr, B A

Three different approaches to the liquid chromatographic detection of nitro polynuclear aromatic hydrocarbons in air and diesel particulate extracts are presented, based on differential pulse (LCDPD) and amperometric (LCEC) electrochemical detection and fluorescence detection following online reduction to the amine (LCFI). The particulate extraction/fractionation procedure for each detection approach is discussed. The operational advantages of oxygen removal with a platinum oxygen scrubber (all three types of detection), the use of modulated pulse detection, and wavelength-programmed fluorescence detection are explored. 1-Nitropyrene is determined in Standard Reference Material (SRM) 1650 diesel particulate matter and in several other round robin samples by all three methods. Results are compared to those obtained by other techniques (gas chromatography/mass spectrometry) and by other laboratories (LCFI). Additionally, 2-nitrofluorene, 9-nitroanthracene, 7-nitrobenz(a)anthracene, and 6-nitrobenzo(a)pyrene are determined in SRM 1650 by LCFI. The detection limits for 1-nitropyrene (expressed as picograms) are 5200 (LCDPD), 60 (LCEC), and 10 (LCFI).

• Research Organization: National Bureau of Standards, Gaithersburg, MD
• OSTI ID: 5417464
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 60:3; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400105 -- Separation Procedures
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
AMPEROMETRY
AROMATICS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
DATA
DIESEL FUELS
EXPERIMENTAL DATA
FLUIDS
FLUORESCENCE
FRACTIONATION
GASES
HYDROCARBONS
INFORMATION
LIQUID COLUMN CHROMATOGRAPHY
LUMINESCENCE
NITRO COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PARTICULATES
PETROLEUM PRODUCTS
POLYCYCLIC AROMATIC HYDROCARBONS
POLYCYCLIC NITRO COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
TITRATION
TRACE AMOUNTS