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Answer:
As Paracelsus (1493 - 1541) stated, the toxicity of many materials, including the common greenhouse gases, are dependent on exposure concentrations and time. Some have workplace exposure limits and controls. A brief review indicates:
Water Vapor
Non toxic
Carbon Dioxide
At levels above 5%, concentration CO2 is directly toxic. Exposure to higher levels may cause unconsciousness or death within minutes of exposure. At lower levels the effects are more related to asphyxia and may include symptoms such as headache, increased heart rate, dizziness, fatigue, rapid breathing, visual and hearing dysfunctions.
Methane
Methane is not toxic but has problems related to explosivity. High concentrations may lead to asphyxia
Nitrous Oxide
The National Institute for Occupational Safety and Health (NIOSH) has established a recommended exposure limit (REL) for nitrous oxide of 25 parts per million (ppm) parts of air (45 milligrams per cubic meter (mg/m(3))) as a time-weighted average (TWA) for the duration of the exposure. The NIOSH limit is based on the risk of reproductive system effects and decreases in audiovisual performance
The American Conference of Governmental Industrial Hygienists (ACGIH) has assigned nitrous oxide a threshold limit value (TLV) of 50 ppm (90 mg/m(3)) as a TWA for a normal 8-hour workday and a 40-hour workweek. The ACGIH limit is based on the risk of reproductive, hematological, and nervous system effects .
Ozone
The following limits are widly accepted (USA, Sweden, UK and other parts of Europe):
- 8 hour per day/5 days per week (occupational exposure limit) - 0.1 ppm
- 15 minutes (short term exposure limit) - 0.3 ppm
The acute and chronic effects of excessive exposure to ozone have been well investigated. Ozone has been shown to be more injurious at concentrations exceeding 2.0ppm over several hours, such as experienced by gas shielded arc welders. The primary site of acute effects is the lung which is characterized by pulmonary congestion. Based on animal studies, exposure over 10 to 20ppm for an hour or less believed to be potentially lethal in humans.
Chlorofluorocarbons
Generally considered non toxic, however some studies indicate a potential for liver and kidney damage. Overexposure may cause dizziness, loss of concentration, Central Nervous System (CNS) depression and/or cardiac arrhythmia.
What else can I help you with?
What does the greenhouse do to the gases from the atmosphere?
The greenhouse effect warms the gases in the atmosphere.
Which part of the greenhouse represents greenhouse gases in the atmosphere?
The glass or plastic walls of a greenhouse represent greenhouse gases in the atmosphere by trapping heat energy inside, much like how greenhouse gases in the Earth's atmosphere trap heat.
Name two greenhouse gases in your atmosphere?
two greenhouse gases are carbon dioxide and methane
What does 'sequestering greenhouse gases' mean?
To sequester means to keep away from other things so sequestering greenhouse gases means to contain the gases in a location away from other gases. Greenhouse gases are building up in the atmosphere, so scientists are investigating ways of pumping them underground.
How do greenhouse gases affect the earths atmosphere?
They slow the loss of heat
What gases are not greenhouse gas?
Greenhouse gases must have three atoms, so gases like hydrogen (H2) and Oxygen (O2) are not greenhouse gases.
How are atmospheric gases like the gases in a greenhouse?
The glass on the greenhouse stops temperature from leaving or entering like the gases do to the earth.The atmospheric gases are called 'greenhouse gases' based on the idea that the gases 'trap' heat like the walls of a greenhouse do
What does the greenhouse do to the gases from the atmosphere?
The greenhouse effect warms the gases in the atmosphere.
How do you use the words 'greenhouse gases' in a sentence?
Greenhouse gases are naturally occurring gases but by increasing the concentrations of greenhouse gases in the atmosphere we are contributing to global warming.
Is the sun involved in the greenhouse gases?
Yes. The greenhouse gases trap the sun's heat.
What greenhouse gases do in the atmosphere?
Greenhouse gases keep the earth warm.Too much greenhouse gas is causing global warming.
What substances trap heat from the earth in?
Water vapor, carbon dioxide, methane, ozone and nitrous oxide. They are known as 'greenhouse gases'.
How can you use the term greenhouse gases in a sentence?
Greenhouse gases trap heat in the Earth's atmosphere, leading to global warming and climate change. Burning fossil fuels releases greenhouse gases like carbon dioxide into the atmosphere. Efforts to reduce greenhouse gas emissions are essential in mitigating the impacts of climate change.
What are greenhouse?
Non-greenhouse gases are all gases except the greenhouse gases. Greenhouse gases are those that can absorb and emit infrared radiation.The most abundant greenhouse gases in Earth's atmosphere are:Water vapor (H2O)Carbon dioxide (CO2)Methane (CH4)Nitrous oxide (N2O)Ozone (O3)CFCs
Which part of the greenhouse represents greenhouse gases in the atmosphere?
The glass or plastic walls of a greenhouse represent greenhouse gases in the atmosphere by trapping heat energy inside, much like how greenhouse gases in the Earth's atmosphere trap heat.
What region has the least greenhouse gases?
The warmth of the sun and the global winds mix the greenhouse gases all round the world, so there is nowhere that has more, or less of the greenhouse gases.
What does a catalyst do in an automobile?
It change the toxic gases into non toxic gases (that are exhausted)
