| Acronym | Meaning |
 | NACCA | North American Council Of Chemical Associations |
 | ASM | Advanced Scavenging Model (for Air Pollution) |
 | RPS | Reemitted Positron Spectroscopy |
 | EDSTAC | Endocrine Disruptor Screening And Testing Advisory Committee |
 | TEAMS | Trace Element Accelerator Mass Spectrometry |
 | XRD | X-ray Diffraction Analysis |
 | EKT | Extended Koopmans Theorem |
 | AOB | Ammonia Oxidizing Bacteria |
 | WATCH | Working Group On Assessment Of Toxic Chemicals |
 | SORP | Southern Oxidants Research Program |