The microcoulometric analyzer is capable of measuring extremely low concentrations of elements such as sulfur and chlorine, typically at the level of micrograms. It is suitable for applications that require high sensitivity analysis, such as environmental monitoring or quality control of fine chemical products. This instrument provides high-precision measurement results, especially suitable for fields with strict requirements for chlorine content, such as chemical production and pharmaceutical industry. It can accurately measure the chlorine content in samples and ensure the reliability of the results.

Adopting Windows operating system, easy to operate; At the same time, it has automated processing capabilities, including real-time access and printing of data, making sample analysis easier and more flexible. Its design principle is based on accurate electrochemical measurement and automatic control technology, therefore it has excellent repeatability and reproducibility, ensuring the stability and consistency of experimental results. Not only can it be used for the determination of sulfur and chlorine elements, but it can also be extended to other elements or compounds that can be detected by electrochemical methods, with strong universality and flexibility.

Measurement steps of microcoulometry analyzer:

1. Instrument preparation and calibration

-Installation and debugging: Ensure that the electrodes are clean and free of pollutants or residues, and regularly clean to maintain sensitivity; Check all cables and interface connections for stability to avoid loosening and signal abnormalities. Calibration should be performed during use or after replacing reagents/electrodes, and accuracy should be verified using standard solutions.

-Electrolyte preparation: For example, in chloride ion analysis, 700 milliliters of glacial acetic acid should be mixed with 300 milliliters of distilled water and stored in a sealed glass bottle. Pay attention to the storage conditions and expiration date of the reagents, as expired or deteriorated reagents can affect the results.

2. Sample processing and injection

-Preprocessing: Operate according to the manual requirements based on the sample type (solid needs to be finely ground, liquid needs to be filtered or diluted) to ensure uniformity and adaptability; Weighing or taking a sample quantity that meets the requirements of the instrument, too much or too little may introduce errors.

-Injection control: It is recommended to use an automatic sampler to achieve uniform injection and reduce human error; Confirm that the carrier gas and combustion gas are sufficient before sampling to prevent reaction interruption.

3. Parameter Setting and Test Execution

-Temperature regulation: When measuring sulfur, it is necessary to set a stable section of 700 ℃, a combustion section of 800 ℃, and a vaporization section of 600 ℃ to ensure that the reaction proceeds fully.

-Bias adjustment: The amplitude of each adjustment should be controlled within the range of 1-5mV to avoid significant fluctuations; If the baseline drift occurs, the electrolytic cell can be recalibrated or flushed. It is normal for the bias voltage collected online to have a slight deviation from the actual value.

-Start measurement: Quantitatively analyze the concentration of the target substance through the Coulombic quantity generated by the electrolytic reaction, monitor the current changes in real time until the endpoint is determined.

4. Data processing and recording

-Accurate recording: Detailed labeling of sample information, measurement time, environmental conditions, etc. for easy traceability and comparative analysis; Avoid missing key data that may lead to subsequent misjudgments.

-Conversion rate verification: Select appropriate concentrations of chlorine standard samples for experiments to ensure the reliability of the method.