“sulfur cycle”的意思、由来-百科全书

sulfur cycle

ecology

circulation of sulfur in various forms through nature. Sulfur occurs in all living matter as a component of certain amino acids (amino acid). It is abundant in the soil in proteins (protein) and, through a series of microbial transformations, ends up as sulfates (sulfate) usable by plants.

Sulfur-containing proteins are degraded into their constituent amino acids by the action of a variety of soil organisms. The sulfur of the amino acids is converted to hydrogen sulfide (H₂S) by another series of soil microbes. In the presence of oxygen, H₂S is converted to sulfur and then to sulfate by sulfur bacteria. Eventually the sulfate becomes H₂S.

Hydrogen sulfide rapidly oxidizes to gases that dissolve in water to form sulfurous and sulfuric acids (sulfuric acid). These compounds contribute in large part to the “acid rain” (acid rain) that can kill sensitive aquatic organisms and damage marble monuments and stone buildings.

词条	sulfur cycle
释义	sulfur cycle ecology circulation of sulfur in various forms through nature. Sulfur occurs in all living matter as a component of certain amino acids (amino acid). It is abundant in the soil in proteins (protein) and, through a series of microbial transformations, ends up as sulfates (sulfate) usable by plants. Sulfur-containing proteins are degraded into their constituent amino acids by the action of a variety of soil organisms. The sulfur of the amino acids is converted to hydrogen sulfide (H₂S) by another series of soil microbes. In the presence of oxygen, H₂S is converted to sulfur and then to sulfate by sulfur bacteria. Eventually the sulfate becomes H₂S. Hydrogen sulfide rapidly oxidizes to gases that dissolve in water to form sulfurous and sulfuric acids (sulfuric acid). These compounds contribute in large part to the “acid rain” (acid rain) that can kill sensitive aquatic organisms and damage marble monuments and stone buildings.
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