Hyperspectral camera - Exploring the effects of metallic elements on algal organisms

2024-06-18 16:03


The effect of metallic elements on algae

Certain metallic elements, such as lead and mercury, are significantly toxic to algae. Lead can interfere with photosynthesis and respiration of algae, affecting algae growth. Mercury not only inhibits photosynthesis and respiration, but also binds to proteins in algal cells, destroying the internal structure of algal cells and causing algal death. When the concentration of metal elements in the water body is too high, it may lead to eutrophication of the water body and promote the excessive growth of algae. This can lead to a host of environmental problems, such as hypoxia in water bodies, declining water quality and ecosystem imbalances. Metallic elements may also affect the metabolic processes of algae. Nickel, for example, can affect the protein amino acid content within algae cells. To gain insight into the specific effects of metallic elements on algae organisms, scientists conducted a series of studies with advanced tools such as hyperspectral cameras. These studies not only help us understand the mechanisms of interaction between metallic elements and algae organisms, but also provide us with a scientific basis for assessing and predicting environmental risks.

Steps and potential applications of hyperspectral effects of metallic elements on algal organisms:

1. Data Collection:

A hyperspectral camera is used to image algae in water bodies containing different concentrations of metallic elements. This camera is capable of capturing images with extremely high spectral resolution to obtain detailed information about algae organisms in a specific spectral range. At the same time, the metal element concentration data of each sample was recorded for subsequent analysis.

2. Spectral analysis:

Spectral characteristics of algae were extracted by hyperspectral imaging. These features may include reflectance, absorptivity and transmittance, which can reflect the optical properties of algal organisms at different wavelengths.

How these spectral features change with the concentration of metal elements is analyzed. For example, certain metallic elements may alter the spectral response of algae, thereby affecting their photosynthesis or other biological processes.

3. Biological response research:

Combined with the results of spectral analysis and biological knowledge, the effects of metal elements on the growth, reproduction and metabolism of algae were studied. This may include observing changes in algae growth rates, chlorophyll content, enzyme activity and other indicators at different metal element concentrations.

Statistical analysis and machine learning methods were used to establish a quantitative relationship model between the concentration of metal elements and the biological response of algae. These models can help us predict and assess the extent to which metallic elements affect algal organisms.

4. Application:

In the field of environmental monitoring, hyperspectral cameras can be used to real-time monitor the pollution of metal elements in water bodies and their effects on algae. This helps to detect and address environmental problems in a timely manner and to protect the health of aquatic ecosystems.

In the field of ecological research, hyperspectral cameras can be used to study processes such as the migration, transformation and bioaccumulation of metallic elements in ecosystems, as well as the impact of these processes on algal biodiversity and ecosystem function.

In aquaculture and agriculture, hyperspectral cameras can be used to assess the effects of metallic elements in water bodies on algae and other aquatic organisms to optimize farming and planting conditions and improve yield and quality.

Experimental test

1. Experimental purpose

The university teacher researched the effect of micrometals on algae

2. List of experimental test instruments

Device nameModel numberConfiguration detailsRemark
Hyperspectral cameraFS-23Spectral range:400-1000nm;Spectral resolution:2.5nm
Electron microscope--

3. Experimental content

3.1 The algae organisms were observed at 400-1000nm band, and the test subjects were divided into two groups, one group was normal, and the other group was contaminated by metal elements

3.2 The test process is shown in the figure. The slide containing algae organisms is placed under the microscope, and the algae is photographed by means of the microscope light path, and the reflectivity curve is obtained



4. Experimental results

400-700nm band (Because the customer's microscope light source is LED, it cannot cover the near-infrared band spectrum, only visible range can be observed)

(Below is a spectrum of normal algae.) The black outer ring is a man-made container



Note: The green dot here is algae, you can click through the software to select each algae area, to view the spectral information, you can see that the spectral curve of a class of algae reflection is still relatively consistent, but the intensity is different

Software screenshots 3


Software screenshots 4



5. Conclusion

Through the comparison of the above two groups of sampling test results, it can be clearly seen that the polluted algae organisms have obvious absorption of light at 677 nanometers, which is the current characteristics of metal absorption. Combined with the observation of the activity of algae organisms, it can effectively judge the impact of a certain type of metal micro-elements on nature