| Organochlorine Pesticides & PCBs by GC/ECD | Organochlorine Pesticides by GC |
| Organochlorine Pesticides & PCBs by GC/ECD | Organochlorine Pesticides by GC/ECD |
| Organochlorine Pesticides and Polychlorinated Biphenyls by GC | Organochlorine Pesticides by GC/ECD |
| Organochlorine Pesticides and Polychlorinated Biphenyls by GC | Organochlorine Pesticides by GC/ECD |