Gas phase molecular absorption spectrometry
Gas-phase molecular absorption spectrometry is a simple and rapid method of analysis that emerged in the 1970s. In 1976, Toyin A. Arowolo and Malcolm S. Cresser first proposed this method (Gas-Phase Molecular Absorption Spectrometry, referred to as GPMAS). Syty first used this method to determine SO2 and designed an air-blowing reaction device. Since then, analysts have successfully measured corrosive, volatile gases such as I2 and Br2, H2S, NOCL, HCN, NO2, and NO. Rechikov et al. Determined that the inert gases mixed with hydride gases used in semiconductor processes B, N, P, As, Sb, Si, Ge, Sn.
The gas phase molecular absorption spectroscopy (GPMAS) is based on the principle of the principle of light absorption, which is based on the relationship between the absorption intensity of light and the concentration of the measured components by the gas decomposed by the measured components. According to the different absorption wavelengths, You can also determine the components of the determination of qualitative analysis.
Gas phase molecular absorption spectrometer
Gas phase molecular absorption spectrometer is an instrument for water quality analysis by gas phase molecular absorption spectrometry. At present, ammonia nitrogen (HJ / T195-2005), Kjeldahl (HJ / T196-2005), nitrite nitrogen (HJ / T197- 2005), nitrate nitrogen (HJ / T198-2005), total nitrogen (HJ / T199-2005) and sulfide (HJ / T200-2005). Determination of mercury (HJ597 -2011) by cold atomic absorption spectrometry and sulfite, potassium permanganate index (CODMn), chloride, bromide, iodide, cyanide, sulfur dioxide, nitrogen dioxide and other indicators can be used literature methods Test. 
Gas-phase molecular absorption spectrometer is widely used in drinking water production, environmental monitoring, petrochemical, health and epidemic prevention, food industry, soil, chemical fertilizers, chemical reagents, paper, leather, printing and dyeing, industrial and mining enterprises, civil engineering, marine and fishery and hydrological monitoring Water quality analysis in various fields.
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