Infrared spectrophotometer features

Infrared spectrophotometer features

According to the GB/T16488-1996 standard, the infrared spectrophotometer extracts the oil in the water with carbon tetrachloride, determines the total extract, and then adsorbs the extract with magnesium silicate to remove polar substances such as animal and vegetable oil. After that, the petroleum was measured. The total extract and petroleum content are all from the wave number of 2930 cm-1 (the stretching vibration of the CH bond in the CH2 group), 2960 cm-1 (the stretching vibration of the CH bond in the CH3 group), and 3030 cm-1 (in the aromatic ring). The stretching vibration of the CH bond) The absorbances at the bands A2930, A2960, and A3030 were calculated. The content of animal and vegetable oils is calculated as the difference between the total extract and petroleum content.

Main feature

1. The detachable integrated optical system makes the instrument small in size, short in optical path and large in energy. It absorbs light after absorption, meets the requirements of infrared spectrum characteristics, has good stability and high signal-to-noise ratio.

2. The electric modulation light source not only reduces the heating intensity of the light source to facilitate the heat dissipation of the system, but also simplifies the structure of the instrument and improves the reliability of the instrument by reducing the mechanical cutting motion device.

3, Non-expert maintenance, instrument optical system, electrical system is self-contained, high degree of integration, which improves the reliability and maintainability of the instrument.

4. Real-time automatic zero adjustment, the computer not only collects the signal when the light source emits light, but also collects the signal when the light source is extinguished, realizing the zero-point real-time automatic adjustment, thereby simplifying the operation and improving the long-term stability of the signal.

5, the analysis efficiency is high, the instrument can complete the analysis and determination of one sample within 30 seconds (non-dispersive infrared method for 2 seconds).