The use of bioavailability in soil ecological environment

The use of bioavailability in soil ecological environment

The study of bioavailability has great significance in the soil environment. Bioavailability plays an important role in improving the soil environment and improving soil nutrients and trace elements. Today we will analyze the bioavailability in the soil ecological environment. In use.

Because different disciplines or fields have different concerns about bio-use elements, the understanding of the meaning of bio-availability is also different. Even in the same subject area, because the elements exist in different environmental media, their meanings will be different. For example, in ecotoxicology, bioavailability is used to describe the ability of pollutants to interact with living organisms in the environment; in ecology, bioavailability is considered to be the active and passive process of chemical substances. The degree of absorption or adsorption. If a chemical can penetrate or bind to a surface covering (such as skin, septum epithelium, visceral lining, cell membrane, etc.), it is bioavailable.

In recent years, the concept of bioavailability has become more controversial in the development of various disciplines. Richard et al. see bioavailability as a process. For soils and sediments, it refers to the physical, chemical, and biological reactions that determine the organism's exposure to those chemicals. That is, the bioavailability of elements includes both The binding and release of elements by soil particles, the migration and transformation of elements in the soil, and the influence of the elements from the soil through the cell membrane into the organism and absorbed by the organism, and subsequent metabolism of the organism (Process 3). The National Research Council (NRC) International Organization for Standardization further described bioavailability as: effectiveness of pollutants in soil (environmental effectiveness), absorption of pollutants by organisms (environmental bioavailability), and contaminants in organisms The accumulation or effect (toxicological bioavailability) of which environmental bioavailability is often defined as environmental bioavailability.

Environmental bioavailability refers to the ease with which substances in the environment are used by organisms and produce effects in organisms. The higher the bioavailability, the easier it is for organisms to absorb and use them. Its essence lies in the study of a potential interrelationship between chemical substances and organisms, and the connection of organisms to the surrounding environment. At present, the research on the bioavailability of elements mostly analyzes the bioavailability of environmental contaminants in the external environment from the chemical point of view.

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