Determination of nitro polynuclear aromatic hydrocarbons in air and diesel particulate matter using liquid chromatography with electrochemical and fluorescence detection
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), Vol. 60:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
AIR
QUANTITATIVE CHEMICAL ANALYSIS
DIESEL FUELS
PARTICULATES
POLYCYCLIC AROMATIC HYDROCARBONS
AMPEROMETRY
FLUORESCENCE
FRACTIONATION
LIQUID COLUMN CHROMATOGRAPHY
POLYCYCLIC NITRO COMPOUNDS
EXPERIMENTAL DATA
TRACE AMOUNTS
AROMATICS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
DATA
FLUIDS
GASES
HYDROCARBONS
INFORMATION
LUMINESCENCE
NITRO COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
SEPARATION PROCESSES
TITRATION
400102* - Chemical & Spectral Procedures
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
400105 - Separation Procedures