Table 1 Effects of CO concentration on the human body
From: Building an indoor air quality monitoring system based on the architecture of the Internet of Things
Item | CO content | Human exposure time and physical symptoms |
|---|---|---|
1 | 0.01% (100 ppm) | Causing symptoms, such as headaches, lethargy, nausea, muscle weakness, and loss of judgment within 6–8 h |
2 | 0.02% (200 ppm) | Causing light headaches within 2–3 h |
3 | 0.04% (400 ppm) | Causing worse headaches within 2.5–3.5 h |
4 | 0.08% (800Â ppm) | Causing dizziness, nausea, and cramping within 45Â min |
5 | 0.16% (1600Â ppm) | Causing headaches and dizziness within 20Â min, and leading to death within 2Â h |
6 | 0.32% (3200 ppm) | Causing headaches, dizziness, and vomiting within 5–10 min, and leading to death within 30 min |
7 | 0.64% (6400 ppm) | Causing headaches and dizziness within 1–2 min, and leading to death within 10–15 min |
8 | 1.28% (12,800 ppm) | May lead to death within 1–3 min |