Abstract Trace residues of organochlorine pesticides (OCPs) in estuarine surface sediments were investigated at three protected wetlands southern Taiwan using high‐resolution gas chromatography/high‐resolution mass spectrometry (HRGC/HRMS) and chromatography‐electron capture detector (GC‐ECD). This study facilitates the development new strategies for investigating OCPs, particularly background ...

In 1998, a typhoon struck before rice harvesting in Japan, and the unpolished rice was found to be stained brown. Samples were collected and analyzed for the presence of trichothecenes using GC/MS. The mycotoxins deoxynivalenol (DON), fusarenon-X (Fus.-X) and nivalenol (NIV) were detected and confirmed with GC/MS. The quantity of trichothecenes was determined using GC-ECD. To our knowledge, thi...

Abstract. The radiative balance of the upper atmosphere is dependent on magnitude and distribution greenhouse gases aerosols in that region. Climate models predict with increasing surface temperature, primary mechanism for transporting tropospheric air into stratosphere (known as Brewer–Dobson circulation) will strengthen, leading to changes atmospheric water vapor, other gases, aerosols. Strat...

Optimization of the Varian Saturn 2200 ion-trap tandem mass spectrometry (IT-MS/MS) system and comparison of its data quality with two other detection methods [electron-capture detection (ECD) and high-resolution mass spectrometry (HRMS)] was pursued by measuring polychlorinated biphenyls (PCBs) levels in fish and shellfish samples. IT-MS/MS methodology provided limits of detection (LOD) compar...

The aim of this study was to develop and optimize methods for the determination gaseous particulate (PM2.5) secondary amines (SAs) in atmosphere using gas chromatography coupled with electron capture detection (GC-ECD) following chemical derivatization. employed liquid–liquid extraction (LLE) pentafluorobenzenesulfonyl derivatives SAs before analytical samples were injected into GC-ECD. optimiz...