Questions 1 • Nitrobenzene(C6H5NO2) is a toxic and combustible substance, which can enter into the human body through various routes such as inhalation, ingestion and most commonly absorbed through the skin( dermal) and its health effect includes neurological effect, hepatic, methemoglobinemia, dermatitis, irritation of the eyes etc. It causes damages to organs such as the skin, eyes, cardiovascular and reproductive systems. It is suspected to be carcinogenic but no sufficient data to prove it. Question 2 • In the petroleum refining process, nitrobenzene is mostly used as solvent in the production of acetate and ethers • Nitrobenzene is used In the production of Aniline, which is used in the polymer industries to produce polyurethane Question …show more content…
b. • The best type of local exhaust ventilation system to use is the hood, a hood with complete enclosure or the push-pull system would be appropriate to avoid exposure of workers to nitrobenzene in a workplace. The fan in the hood helps in pulling up all the toxic air into the duct afterwards the air cleaners helps to filter it. Nitrobenzene is combustible so it must be prevented from dispersion into workplace or atmosphere or been inhaled or come in contact with the skin. c. Advantages • It protects workers at workplace from nitrobenzene exposure as it captures it from the source. • It is very effective as it can handle all types of contaminants. • It requires only little amount of air to make up since only little is been exhausted. Disadvantages • It is usually cost effective to install an effective ventilation system • It requires regular checkup and maintenance. • If not properly laced, contaminants may be drawn into the working environments. • All emissions that have been drawn into the system must be effectively disposed safely, if not it may have adverse effect on the
Health effects from diesel exhaust is mainly related to the respiratory and cardiovascular systems with the central airway being the most affected. Diesel exhaust can lead to the development of specific diseases that can have a lasting impact on a person. Barath’s article says, “…Recent studies have also suggested a role for pollutants in the development of both asthma and COPD” (1). Asthma and COPD are both diseases of the central airway. They are chronic conditions that affect individuals for a lifetime. Diesel exhaust does the more damage to the respiratory system of children than it does to adults. Oehha’s article says, “Because children’s lungs and respiratory systems are still developing, they are also more susceptible than healthy adults to fine particles”. When children’s bodies are still developing, the environment around them has a larger impact on them. Pollution’s affect on children is so drastic because it can limit the body’s ability to farther
And the fault is sodium nitrite (E 250), a salt used as a preservative of meat and color fixative, in smoked, preserved, cold and canned. Its use is justified because it prevents the growth of sporogenic bacteria, responsible for botulism, but the amount that can be added to the meat is regulated, since it generates nitrosamines, a chemical compound carcinogen.
and nitrous oxides- and is likely to play an even larger role in Global Warming
It’s an industrial solvent and coolant, in nuclear power plants, in the production of Styrofoam, as a fire retardant , in many forms of cruel animal research.
Nitrous oxide is usually the gas used in specific dental procedures that might bring discomfort to the patient in ways of pain and irritation. The gas is used as a anesthetic agent because of the depressant effect on the central nervous system (Vines, 2016). Large, but also unsafe amounts of N₂O have to be used to have a anesthetic effect on a patient; copious amounts of nitrous oxide is deadly if the amount administered is not managed. The ratio of twenty percent oxygen with eighty percent of nitrogen or thirty percent oxygen for seventy percent of nitrogen must be kept because nitrous oxide can not sustain life alone. Being exposed to nitrous oxide for long periods of time can lead to nerve malfunctions, neuropathy, in patients. In pregnant women, spontaneous abortion or other fetal diseases may occur (Vines, 2016). Another hazard of nitrous oxide is its shared ability with oxygen to support combustion. If there is combustible material, an ignitor, and nitrous oxide, a large fire may result and severe burns can be inflicted on the
are emitted into our atmosphere from a car exhaust. Solutions to this problem come as
Concerns on potential health effects resulting from benzene exposure such as bone marrow depression leading to anaemia, leukopenia and thrombocytopenia, as well as decreases in circulating blood cells have been reported. In addition, laboratory studies on humans and animals indicated that benzene exerts its effect by damaging the genetic material of cells. Hence, benzene is being classified as confirmed human carcinogen. [2]
pollutant before materials are used, removed the pollutant after it is formed, or altered the
Wax is used as mold release agent, anti-aging agent, plasticizer and lubricant in the rubber and tire industry [26].
Key points : BN , Graphite , Jig-A-Loo Molybdenum disulphide, Ski wax, Bio lubricants , Synthetic lubricants .
Use laboratory safety equipment such as fume hoods and other local ventilation to prevent exposure to airborne chemicals. Wear gloves and other personal safety clothing to avoid skin contact with all laboratory chemicals to minimize the exposure to them.
12. Cooking place: The kitchen should be proper ventilated but it’s not the only thing about your cooking place, you need to have automatic igniter as it cuts down on the amount of gas that can escape because gas stoves also causes lung
Factories and transportation depend on huge amounts of fuel--billions of tons of coal and oil are consumed around the world every year. When these fuels burn they introduce smoke and other, less visible, by-products into the atmosphere.