1、 Sample processing and injection

Sample pretreatment: Depending on the characteristics of the sample, pre-treatment steps such as dissolution and dilution may be necessary to ensure that the sample is suitable for instrument analysis.

Injection speed control: During the injection process, the injection speed should be strictly controlled to avoid peak tailing caused by too fast or too slow injection, which affects measurement accuracy. At the same time, the injection volume also needs to be adjusted according to the sulfur content of the sample to reduce analysis errors.

2、 Instrument calibration and maintenance

Single point calibration: When using the single point calibration method, it is advisable to select a standard sample that is as close as possible to the sample content for calibration to improve the accuracy of calibration.

Air circuit inspection: Regularly inspect the air circuit to prevent air blockage or leakage caused by aging or improper connection, which may affect the analysis results.

Cracking tube maintenance:

Regularly check for carbon buildup at the outlet of the cracking tube and in the subsequent gas path. If there is carbon deposition in the cracking tube, it can be removed by burning oxygen under high temperature conditions.

Regularly check the usage of the cracking tube. If the wall of the cracking tube becomes white and rough, it indicates that the service life of the quartz tube has expired and should be replaced in a timely manner.

Silicone pad replacement: Regularly replace the silicone pad of the injection port to prevent air leakage and unstable data.

Reaction chamber cleaning: Regularly clean the reaction chamber according to usage to remove residual deposits, improve sensitivity, and ensure reproducibility of analysis results.

3、 Operating standards and safety

Adhere to operating procedures: strictly follow the user manual to avoid instrument damage or inaccurate measurement caused by misoperation.

Safety protection: During the operation, relevant safety operating procedures should be followed to avoid contact with harmful chemicals and ensure personal safety.

Environmental requirements: Store the instrument in a dry and ventilated environment to avoid moisture and high temperatures affecting its performance.

4、 Other precautions

Instrument preheating: Before each use, it should be ensured that the instrument has been fully preheated to achieve a stable working state.

Data recording and analysis: After the test is completed, the test results should be recorded in a timely manner, and data processing and analysis should be carried out to obtain accurate sulfur content data.

Regular calibration and validation: Regularly calibrate and validate instruments to ensure the accuracy and reliability of measurement results.