GB/T 44396-2024 in English

1. Standard Overview

GB/T 44396-2024 "Acute Toxicity Test of Chemicals on Rare Crucian Carp Embryos" specifies the test methods for the acute toxic effects of chemicals on rare crucian carp embryos, including test substance information, test principles, equipment and materials, test procedures and data processing.

Scope of Application

It is applicable to evaluate the acute toxic effects of chemicals on rare crucian carp embryos, and provide a scientific basis for the safety evaluation and environmental risk assessment of chemicals.

2. Test methods and equipment requirements

Test equipment

Test materials

Including chemically inert containers, 24-well cell culture plates, spawning cages, etc., to ensure that there is no physical and chemical reaction with the test substance solution.

3. Quality Control and Data Processing

Quality Control Requirements

• The total fertilization rate of test embryos is not less than 70%
• The embryo survival rate of the blank control group is not less than 90%
• The minimum mortality rate of the positive control group is not less than 30%

Data Processing Method

The LC₅₀ value and 95% confidence limit are calculated using statistical methods, the dose-effect curve is drawn, and the cumulative mortality rate at each time point (24h, 48h, 72h, 96h) is recorded.

4. Implementation suggestions and future prospects

Implementation suggestions

• Laboratories should have appropriate equipment and professional technicians
• Regularly calibrate instruments to ensure stable test conditions
• Strengthen quality control to ensure data accuracy and reliability
• Use tools such as QSAR models to optimize concentration range selection

Future prospects

With the development of environmental toxicology, it is recommended to further study the possibility of dynamically adjusting test conditions, such as the application of intelligent monitoring systems and high-throughput testing technologies.