Biological toxicity detector based on bioluminescence sensing technology: principles, advantages and applications

In the field of water quality safety monitoring, traditional biological toxicity detection methods (such as fish or water flea tests) are often time-consuming and costly. The biological toxicity detecter based on bioluminescent sensing technology has become an important tool for modern environmental monitoring due to its rapid, sensitive and efficient characteristics.

1. Detection principle: Biosensing technology of luminescent bacteria

The core principle of the biotoxicity detector is to use the metabolic luminescence characteristics of luminescent bacteria (such as Vibrio fischeri) to evaluate toxicity. Its workflow is as follows:

Normal state: Luminescent bacteria will continue to emit light during metabolism, and the light intensity is stable.

Toxic exposure: When toxic substances such as heavy metals and pesticides are present in the sample, the respiration of bacteria is inhibited, resulting in a decrease in luminescence intensity.

Quantitative analysis: The instrument detects changes in light intensity through a high-sensitivity silicon photomultiplier tube, and compares it with standard poisons (such as HgCl₂) to quickly determine the toxicity level.

This method complies with the national standard GB/T15441-1995 and the international standard ISO11348-3, and can complete the detection within 15 minutes, greatly improving efficiency.

2. Technical advantages: fast, accurate and intelligent

Compared with traditional biological detection methods, modern biological toxicity detectors have significant advantages:

Ultra-high sensitivity: can detect more than 3,000 toxic substances, including heavy metals, organic pollutants and nerve agents.

Anti-interference design: The darkroom automatic lifting detection device is used to avoid the influence of ambient light and ensure data accuracy.

Portable and efficient:

PVC engineering box design, suitable for on-site detection;

7-inch touch screen + Android system, intuitive operation;

Consumables cost is reduced by 80%, suitable for long-term monitoring.

Data comparability: The results are highly consistent with traditional methods such as fish tests, but faster, suitable for emergency pollution incident response.

3. Application scenarios: from industrial wastewater to food safety

The instrument has been widely used in many fields:

Environmental supervision: monitoring sudden toxic pollution in industrial wastewater and municipal drainage.

Emergency response: rapid assessment of water toxicity at chemical leaks or accident sites.

Food and medical: detection of biosafety of packaging materials and drug residues.

Scientific research and education: used for toxicology research and environmental microbiology experiments.

Its multi-scenario applicability and real-time data feedback capabilities make it an important tool for water quality safety management.

The bioluminescent toxicity detector uses innovative sensing technology to achieve rapid and accurate assessment of water toxicity, solving the problems of low efficiency and high cost of traditional methods. Whether it is environmental monitoring, industrial emission control, or food safety testing, it can provide reliable toxicity data support.

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