What is the topic of the special chemical laboratory technology competition in the 222 World Skills Competition?

1. chemical analysis: including titration analysis, spectral analysis, chromatographic analysis and other common chemical analysis methods, which require players to master the principles, operations and data processing of various analysis methods.

2. Laboratory operation: including the use of common chemical instruments, the preparation and preservation of reagents, and the safe operation in the laboratory. Players are required to have good experimental operation skills and safety awareness.

3. Chemometrics: It involves the writing, calculation and analysis of chemical equations, and requires players to master the basic principles and methods of chemometrics.

4. Comprehensive application of chemistry: Combining with practical problems, examine the players' ability to use chemical knowledge and skills to solve practical problems, such as analyzing and detecting environmental pollutants and researching new materials.