What to know about acid rain Rush T

Due to the dense factories and the large number of cars, too many gases are emitted, which exceeds the self-cleaning capacity of the air, so that too much CO2 and other gases are dissolved in the rainwater on rainy days, and the water PH is < and corrosive.

Acid rain, which is heavy rain with pH, is caused by SO2 and CO2 in the air.

Acid rain refers to rain and snow with a pH less than or other forms of slow-moving precipitation, which is mainly caused by the anthropogenic emission of large amounts of acidic substances into the atmosphere.

Acid rain is the wet deposition in acid sedimentation, which can be divided into two categories: wet deposition and dry deposition, the former refers to all gaseous pollutants or granular pollutants, with rain, snow, fog or hail and other precipitation forms that fall to the ground, and the latter refers to the acidic substances carried by the dust falling from the air on days when it does not rain. Acid rain is also divided into nitric acid rain and sulfuric acid rain.

Acid rain is one of the three major environmental hazards in the world, after the 70s of the 20th century, there was a wide range of acid rain in China, and China's acid rain area is one of the three major acid rain areas in the world, and part of the East Asian acid rain area.

Acid rain in China is mainly caused by the burning of a large amount of coal with high sulfur content, mostly sulfuric acid rain, less nitric acid rain, in addition, the exhaust gas emitted by various motor vehicles is also an important cause of acid rain. Some areas in China have become areas prone to acid rain, and the scope and extent of acid rain pollution have attracted people's close attention.

Hazards of Acid Rain:

Acid rain can still accelerate the loss of soil mineral nutrients. Under the action of acid rain, the nutrients potassium, sodium, calcium, and magnesium in the soil are lost and leached away with the rain. Therefore, long-term acid rain will cause a large amount of nutrients in the soil to be leached, resulting in a serious shortage of nutrients in the soil, so that the soil becomes poor.

Altering the soil structure leads to soil impoverishment and affects the normal development of plants. In addition, acid rain can release aluminum from the stable state in the soil, resulting in an increase in active aluminum and a decrease in organic complexed aluminum. The increase of active aluminum in the soil can seriously inhibit the growth of forest trees.

Acid rain can also induce plant pests and diseases, which can greatly reduce crop yields, especially wheat, which can reduce yields by 13 to 34 grams under the influence of acid rain. Soybeans and vegetables are also susceptible to acid disturbances, resulting in reduced protein content and yields.

The effects of acid rain on forests are largely due to the deterioration of the physicochemical properties of the soil. Acid rain can inhibit the reproduction of some soil microorganisms and reduce enzyme activity, and nitrogen-fixing bacteria, bacteria and actinomycetes in soil will be significantly inhibited by acid rain.

The above content reference: Encyclopedia - acid rain.

Acid rain, acid deposition, is a broad term that includes any form of precipitation with acidic components, such as sulfuric acid or nitric acid, which will settle from the atmosphere to the ground in a wet or dry form. In the natural environment, including rain, snow, fog, hail and even acidic dust can be carriers of acid precipitation.

The pH value is usually used to measure the pH of a solution, and the pH value is neutral. The lower the pH of a substance (less than 7), the more acidic it is; The higher the pH of a substance (greater than 7), the higher the alkalinity.

Normal rainwater is weakly acidic due to the formation of weak carbonic acid due to CO2. But the pH of acid rain is usually between and .

The main causes of acid rain:

Acid rain occurs when sulfur dioxide (SO2) and nitrogen oxides (NOx) are emitted into the atmosphere and acidify the atmosphere through wind and air currents. SO2, NOx, water, oxygen, and other chemicals react to form sulfuric acid and nitric acid, which are mixed with water and other carriers and finally act on the ground as rainfall.

As an excellent carrier of SO2 and NOx, wind can further spread the impact of acid rain, which can be said to be a natural disaster that seriously affects the ecological and human environment.

Acid rain refers to rain, snow or other forms of precipitation with a pH of less than one, mainly caused by the anthropogenic release of large amounts of acidic substances into the atmosphere. Acid rain is the wet deposition in acid sedimentation, which can be divided into two categories: wet deposition and dry deposition, the former refers to all gaseous pollutants or granular pollutants, with rain, snow, fog or hail and other precipitation forms and fall to the ground, and the latter refers to the acidic substances carried by the dust falling from the air on days when it does not rain. <

Acid rain refers to rain, snow or other forms of precipitation with a pH of less than one, mainly caused by the anthropogenic release of large amounts of acidic substances into the atmosphere. Acid rain is the wet deposition in acid sedimentation, which can be divided into two categories: wet deposition and dry deposition, the former refers to all gaseous pollutants or granular pollutants, with rain, snow, fog or hail and other precipitation forms that fall to the ground, and the latter refers to the acidic substances carried by the dust falling from the air on days when it does not rain. Acid rain is also divided into nitric acid rain and sulfuric acid rain.