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NO对健康和环境的影响

Nitrogen Oxide is another pollutant that has been nicknamed “a jet-age

pollutant” because it is only apparent in highly advanced countries. Sources of

this are fuel plant, cars, and trucks. At lower concentrations Nitrogen Oxide is

a light brown gas. In high concentrations it is a major source of haze and smog.

It also combines with other compounds to help form ozone. Nitrogen Oxide causes

eye and lung irritation, and lowers the resistance to respiratory illness, such

as chest

colds, bronchitis, and influenza. For children and people with asthma, this

gas can cause death. Nitrogen Oxide may be the most dangerous of these

pollutants because it also makes nitric acid, when combined with water in rain,

snow, fog, or mist. This then becomes the harmful acid rain.

工业废物对环境的危害

Most modern technological processes produce unwanted by-products in addition

to the desired products, which are known as industrial waste and pollution.

While most material waste is reused in the industrial process, many forms are

released into the environment, with negative environmental side effects, such as

pollution and lack of sustainability. Different social and political systems

establish different balances between the value they place on additional goods

versus the disvalues of waste products and pollution. Some technologies are

designed specifically with the environment in mind, but most are designed first

for economic or ergonomic effects. Historically, the value of a clean

environment and more efficient productive processes has been the result of an

increase in the wealth of society, because once people are able to provide for

their basic needs, they are able to focus on less-tangible goods such as clean

air and water.

不可见污染物CO对健康的影响

While you may see pollutants such as particulates, other harmful ones are not

visible. Amongst the most dangerous to our health are Carbon Monoxide, Nitrogen

Oxides, Sulfur Dioxide, and Ozone. If you have ever been in an enclosed parking

garage or a tunnel and felt dizzy or light-headed then you have felt the effect

of Carbon Monoxide (CO). This odorless, colorless, but poisonous gas is produced

by the incomplete burning of fossil fuels, like gasoline or diesel fuel. Carbon

Monoxide comes from cars, trucks, gas furnaces and stoves, and some industrial

processes. CO is also a toxin in cigarettes. Carbon Monoxide combines with

hemoglobin in the red blood cells, so body cells and tissues cannot get the

oxygen they need. Carbon Monoxide attacks the immune system, especially

affecting anyone with heart disease, anemia, and emphysema and other lung

diseases. Even when at low concentrations, CO affects mental function, vision,

and alertness.