Determination of Nitro Polycyclic aromatic hydrocarbons in PM2.5 using GC-MS/MS
Polycyclic aromatic hydrocarbons (PAHs) and their derivatives, such as nitrated, oxygenated, and hydroxylated derivatives (NPAHs, OPAHs, and OHPAHs), are ubiquitous atmospheric pollutants with toxic, mutagenic, and carcinogenic properties. These compounds are predominantly produced from a wide variety of anthropogenic sources such as the incomplete combustion of fossil fuels for industrial plants, heating, as well as diesel powered vehicles. NPAHs, which generally exhibit higher mutagenicity and carcinogenicity than the parent PAHs, are also generated from atmospheric reactions of PAHs released into the gas-phase with radical species such as OH and NO3 radicals and nitrogen oxides. Concentrations of NPAHs adhering to air particulate matter are generally 10 to 100 times lower than concentration of PAH and the complex matrix of atmospheric particles, it’s difficult to detect the content of NPAHs in the total suspended particulates. It had be published that the detection of NPAHs using HPLC-FLD, GC-ECD, GCMS-NCI, etc, but have not be reported using GC-MS/MS to detect the content of NPAHs. In this study, we try to detect the content of NPAHs in the total suspended particulates using gas chromatography Tandem mass spectrometry (GC-MS/MS). For the high selectivity of GC-MS/MS, it can significantly reduce the affect of the matrix and system detection limits to enhance the detect accuracy of NPAHs in the total suspended particulates.
- Content Type:
- Paper
- Document Number:
- PO-CON1637E
- Product Type:
- Mass Spectrometry, Gas Chromatograph-Mass Spectrometry
- Keywords:
- PAHs, NPAHs, OPAHs, atmospheric pollutant, NPAHs, PM2.5, Environment, Atmosphere, GCMS-TQ8040
- Language:
- English
- File Name:
- hko216053.pdf
- File Size:
- 509kb