Determination of nitro-polycyclic aromatic hydrocarbons in atmospheric aerosols using HPLC fluorescence with a post-column derivatisation technique

Olivier Delhomme, Pierre Herckes, Maurice Millet

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The objective of this study was to develop an efficient and sensitive analytical protocol for the determination of nitrated polycyclic aromatic hydrocarbons (NPAHs) in aerosol samples. The separation of 16 NPAH (mono-and dinitro-PAH) was achieved by reversed-phase high-performance liquid chromatography (HPLC) followed by =.28w?>on-line reduction of the NPAHs to their corresponding amino polycyclic aromatic hydrocarbons (APAHs) and quantification by fluorescence detection. The main factors affecting the on-line reduction efficiency, such as the flow rate, the temperature, the position and packing of the reduction column were evaluated and optimised. The optimal conditions obtained were: packing of the reduction column with Pt-Al 2O3; a reduction column oven temperature of 90 °C; a flow rate of 0.8 mL min-1. The resulting detection limits of the method ranged between 0.06 (2 NN) and 1.25 μg L-1 (1.8 DNN), with an uncertainty of about 6%. The lifetime of the reduction column was identical to that of a typical analytical column. This analytical method was applied to particulate matter samples collected during December 2005 and August 2006 in Strasbourg (Alsace, eastern France). The NPAH concentrations observed for this urban site showed that the compounds are more abundant during winter (average of 534 pg m-3) than during summer (average of 118 pg m-3). 1-Nitropyrene was the predominant NPAH species, independent of season.

Original languageEnglish (US)
Pages (from-to)1953-1959
Number of pages7
JournalAnalytical and Bioanalytical Chemistry
Volume389
Issue number6
DOIs
StatePublished - Nov 2007

Fingerprint

Atmospheric aerosols
Polycyclic Aromatic Hydrocarbons
High performance liquid chromatography
Aerosols
Fluorescence
High Pressure Liquid Chromatography
1-nitropyrene
Flow rate
Temperature
Particulate Matter
Ovens
Reverse-Phase Chromatography
Polycyclic aromatic hydrocarbons
Uncertainty
France
Limit of Detection

Keywords

  • Liquid chromatography coupled to fluorescence detection
  • Nitrated polycyclic aromatic hydrocarbon
  • On-line reduction with Pt-AlO
  • Particulate matter

ASJC Scopus subject areas

  • Analytical Chemistry
  • Clinical Biochemistry
  • Biochemistry

Cite this

Determination of nitro-polycyclic aromatic hydrocarbons in atmospheric aerosols using HPLC fluorescence with a post-column derivatisation technique. / Delhomme, Olivier; Herckes, Pierre; Millet, Maurice.

In: Analytical and Bioanalytical Chemistry, Vol. 389, No. 6, 11.2007, p. 1953-1959.

Research output: Contribution to journalArticle

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