Device for detecting biological effect of settling nano material-pollutant system and application

Abstract

The invention discloses a device for detecting the biological effect of a settling nano material-pollutant system. The device is used for small aquatic benthonic organisms and comprises a biological culture system and a biological isolation system located in the biological culture system. The biological culture system comprises a base plate and an outer cover located at the upper end of the base plate; the biological isolation system comprises a spacer piece disposed in the base plate, and further comprises at least common spacer pieces and one filtering spacer piece. The invention further discloses application of the device for detecting the biological effect of the settling nano material-pollutant system. Compared with the prior art, the device has the advantages that the device for detecting the biological effect of the settling nano material-pollutant system is suitable for the small aquatic benthonic organisms, can distinguish the biological effects of different components of the settling nano material-pollutant system, is simple to place, makes temperature parameters easy to control and meanwhile can reflect the fating effect of a nano material on environmental pollutants.

Description

technical field [0001] The invention relates to the field of ecological risk assessment, in particular to a detection device and application of biological effects of a sedimentation nanomaterial-pollutant system. Background technique [0002] Nanotechnology is known as one of the three pillar technologies of the 21st century. Due to their special properties, nanomaterials are widely used in various fields, but nanomaterials will inevitably enter the environment and ecosystem during the process of use and disposal, thereby triggering various biological effects. At present, the research on the biological effects of nanomaterials is mostly limited to the toxic effect of a single substance under laboratory conditions. However, in the actual natural environment, nanomaterials often coexist with multiple pollutants and have complex interactions. Compared with macroscopic particles, nanomaterials have a larger specific surface area. Once they enter the environment, they can signif...

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Problems solved by technology

However, while the research in this area is increasing year by year, it is not difficult to find that most of the existing research methods are single, often using a simple model in which the biological effects of the tested organisms exposed to the "nanomaterial-pollutant" mixture are compared with those of the control group. However, nanomaterials have various characteristics, and most of them have a sedimentation effect and can effectively adsorb a variety of pollutants. The aggregation and sedimentation effect leads to a local increase in the concentration of pollutants, and experimental animals living in different water layers were used. The opposite result will also be obtained, and nanomaterials with different water characteristics will also lead to different environmental fates of the complex.

However, the existing related studies are all carried out in a single way, and most of the experimental conditions in the research are not the same, and the conclusions obtained also have different emphases, without considering the environmental process and distribution of pollutants in real water samples, often based on one The direct results of the tested animals are the final conclusion of the environmental effects of the nanomaterial-pollutant complex system, which leads to inconsistencies in the existing research results. Therefore, the generalized research methods in the related research models need to be further improved and optimized.

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