Water Quality – Oceans
| Warning Level | National Standards | Measured by | |
|---|---|---|---|
| Sulphurous Acid Gas (SO2) | Annual Average | 0.02ppm lower | Pulse U.V. Fluorescence Method |
| 24-hour Average | 0.05ppm lower | ||
| 1-hour Average | 0.15ppm lower | ||
| Carbon Monoxide (CO) |
8-hour Average | 9ppm lower | Non-Dispersive Infrared Method |
| 1-hour Average | 25ppm lower | ||
| Nitrogen Dioxide (NO2) |
Annual Average | 0.03ppm lower | Chemiluminescent Method |
| 24-hour Average | 0.06ppm lower | ||
| 1-hour Average | 0.10ppm lower | ||
| Particulate Matter (PM-10) |
Annual Average | 50㎍/㎥ lower | β-Ray Absorption Method |
| 24-hour Average | 100㎍/㎥ lower | ||
| Fine Particulate Matter (PM-2.5) |
Annual Average | 15㎍/㎥ lower | Gravimetric Measurement Method or any other automatic |
| 24-hour Average | 35㎍/㎥ lower | ||
| Ozone (O3) |
8-hour Average | 0.06ppml ower | U.V Photometric Method |
| 1-hour Average | 0.1ppm lower | ||
| Lead (Pb) |
Annual Average | 0.5㎍/㎥ lower | Atomic Absorption Spectrophotometry |
| Benzene (C6H6) |
Annual Average | 5㎍/㎥ lower | Gas Chromatography |
- An hourly average permillage shall not exceed the national standard. An 8-hour or 24-hour average percentage shall not exceed the national standard.
- Matters with molecular size of 10㎛ or lower are particulate matters (PM-10).
- Matters with molecular size of 2.5㎛ or lower are fine particulate matters (PM-2.5).
- Source: Enforcement Decree of FRAMEWORK ACT OF ENVIRONMENTAL POLICY (Enacted on Mar. 27, 2018)