Biological concentration refers to biological organisms or living in

Bioconcentration refers to the phenomenon that biological organisms or multiple biological populations of the same trophic level accumulate certain elements or refractory compounds from the surrounding environment, so that the concentration of the substance in biological organisms exceeds the concentration in the environment.

This phenomenon mainly comes from the transformation and accumulation of biological chain. When an organism ingests nutrients containing certain substances, these substances will be absorbed by its body and transformed into its own tissue components without being excreted. In this way, in the process of biological growth, these substances will be continuously enriched in the organism until they reach a certain concentration.

If this creature is in a polluted environment, the concentration of substances enriched in its body will be higher. Because pollutants in the environment will be absorbed by organisms and gradually enriched in advanced organisms with the transmission of the food chain.

Bioconcentration is not limited to heavy metals and harmful substances. Some beneficial nutrients, such as certain amino acids and fatty acids, will also be enriched in organisms. These substances are necessary for the survival and growth of organisms, but excessive intake will also have a negative impact on organisms.

Artificial material concentration method:

1, material concentration technology:

Material concentration technology is widely used in various fields, including chemical industry, biotechnology, medical treatment and environmental protection. The following are some common substance concentration techniques: supercritical fluid extraction, which uses the characteristics of supercritical fluid to separate the target substance from the fluid. This technology is environmentally friendly and has the advantages of high efficiency and energy saving.

Membrane separation technology, using semi-permeable membrane, allows some substances to pass through and prevents other substances from passing through, thus realizing the separation and concentration of substances. This technology is often used in seawater desalination, hemodialysis and so on. Chromatographic technology uses the distribution difference of different substances between stationary phase and mobile phase to realize the separation and concentration of substances. High performance liquid chromatography and gas chromatography are commonly used chromatographic techniques, freeze-drying.

2, the application of substance concentration:

Material concentration is widely used in various fields. For example, in the chemical industry, rare or high-value substances can be concentrated to improve their output; In the field of biotechnology, the target components in biological samples can be concentrated for subsequent analysis and detection; In the medical field, specific cells or viruses in blood can be concentrated to improve the therapeutic effect; In the field of environmental protection, harmful substances in wastewater or soil can be concentrated for more convenient treatment and disposal.