What Is Environmental Enrichment?

When processing raw materials industrially, the required elements, compounds or mixtures are separated from the coexisting matrix or substances that interfere with the processing process, and the dispersed required mineral substances are collected in the next step. This process is called preliminary enrichment; It is required to separate the required mineral substances or interferences as completely as possible, and to recover the mineral substances as completely as possible.

The initial absorption of industrial equipment from the basic raw material pile and the simple accumulation of certain elements or difficult-to-decompose compounds, resulting in the equilibrium concentration of the substance exceeding the concentration in the environment, is called preliminary enrichment. The initial enrichment increases the concentration of the required substance by increasing the amount of the required substance.

In applied sciences, the application of various separation technologies plays an important role in developing valuable underground resources. Closely related to energy

Concentration mainly refers to the shrinkage of the solution volume, but the components in the solution generally do not change.

Enrichment mainly refers to the concentration of one component in the solution, which not only reduces the volume but also the amount of other components.

Purification refers to separating one component from other components in the solution, and the solution volume may be reduced or enlarged.

Both enrichment and concentration increase the concentration of the substance, the difference is whether to change the total amount of the substance. Concentration is to reduce the unwanted part of an individual by a certain means, thereby increasing the relative content of the needed part. Compared with enrichment, concentration does not increase the total amount of required substances, but reduces the amount of unnecessary substances. ^[5]

In quantitative analysis, more complex samples are often encountered. When measuring one of the components, the coexisting components will cause interference. You can eliminate the interference by controlling the analysis conditions or using masking methods. If you still cannot solve the problem It is necessary to separate the component to be measured from the interference component. In some styles, the content of the component to be measured is low, and the sensitivity of the existing measurement method is not high enough. At this time, the component to be measured must be initially enriched. Set, and then measure, the initial enrichment process is the separation process.

Bioconcentration, also known as bioconcentration, refers to the phenomenon in which organisms accumulate certain elements in the environment or compounds that are difficult to decompose, so that the concentration of these substances in the organism exceeds the concentration in the environment. There are three situations in which organisms absorb substances in the environment: one is algae, protozoa, and various microorganisms, which are mainly absorbed directly on the body surface; the other is higher plants, which are mainly absorbed by the root system; the other is In most animals, they are mainly absorbed by swallowing. In the above three cases, the first two are taken directly from the environment, and the latter need to be taken through the food chain. When various substances in the environment enter the organism, they immediately participate in various metabolic activities. Among them, a part of the substances necessary for life participates in the composition of the organism, and the excess and non-life essential substances are quickly decomposed and discharged from the body, and only a few substances that are not easily decomposed (such as DDT) remain in the body for a long time. The study of biological enrichment is of great importance in elucidating the laws of migration and transformation of substances in the ecosystem, evaluating and predicting the possible harm of pollutants after entering the organism, and using the organism to monitor and purify the environment. significance.

For heavy metals that plants absorb and accumulate from sediments, the enrichment factor can be used to reflect the level of heavy metal enrichment or the strength of the plants. The heavy metal enrichment coefficient refers to the element content in a certain part of the plant corresponding to the soil. ^[6]