(د) تحديد الكاشفات المناسبة مثل كاشف الإلكترونات (ECD) أو الكشاف الانتقائي للكتل (MSD) أو بمطياف الكتل منخفض الاستبانة أو مطياف الكتل عالي الاستبانة (LRMS, HRMS)؛
Purification should be efficient enough so that chromatographic retention is not influenced by the matrix; Separation by capillary gas chromatography (HRGC), which will provide sufficient separation of analytes; Identification by suitable detectors such as an electron capture detector (ECD) or a mass-selective detector (MSD), or by either low-resolution mass spectrometry or high-resolution mass spectrometry (LRMS or HRMS); Quantification according to internal standard methodology (for reference, see UNEP 2004a); Reporting in accordance with regulation(s).