PM2.5 (PM: Particulate Matter), which is a medium-sized particle with a medium diameter of 2.5, also known as particulate matter in the lungs. The proportion of particles in the atmosphere is very large, and it contains a large amount of toxic, harmful substances, and the residence time in the atmosphere is long, and the transportation distance is long.
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.
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.
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.
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.
The WSOC measurement method issued by Japan's Ministry of the Environment describes that it uses ultrapure water to extract WSOC from PM2.5 collected on a filter, after which measurements are performed with a TOC analyzer or carbon analysis system. Diesel vehicles are one source of PM2.5, and since the particles generated in diesel particulate matter are 1 μm or smaller, these particles are regarded as being an important part of PM2.5. The main components of diesel particulate matter are carbon components, including WSOC. In this article, we will describe using the Shimadzu TOC-L total organic carbon analyzer to measure the WSOC content in diesel particulate matter based on the measurement method issued by Japan's Ministry of the Environment.
GCMS-TQ8050 NX
The Shimadzu triple-quad GCMS-TQ8050 NX is capable of performing unprecedented quantitative GC-MS/MS analyses of ultra-trace amounts, down to the femtogram level. Equipped with a new, highly efficient detector and three forms of noise-reduction technologies, the GCMS-TQ8050 NX has never been more important in industries such as food safety, cannabis testing, forensics, and more.
TOC-L Series
The TOC-L series of TOC analyzers adopts the 680°C combustion catalytic oxidation method, which was developed by Shimadzu and is now used worldwide. While providing an ultra wide range of 4 μg/L to 30,000 mg/L, these analyzers boast a detection limit of 4 μg/L through coordination with NDIR.
