1. Gas chromatography-mass spectrometry (GC-MS) gas chromatograph is mainly used for the detection of organic substances, and is applied to environmental geochemistry, organic geochemistry, life science and other research, such as soil, air, water organic pollutants, organochlorine pesticide residue analysis, organophosphorus pesticide residue analysis, pesticide residue analysis, herbicide residue analysis, etc. GC has the advantages of high sensitivity, strong selectivity, simple and fast operation for the detection of organics that are easy to gasify and not easy to decompose after gasification. Mass spectrometry (MS) has high sensitivity, selectivity and reliability. The combination of MS and GC can make full use of their advantages to achieve efficient and rapid separation and identification.
2. The high performance liquid chromatograph can make up for the non-volatile substances with poor thermal stability that cannot be analyzed by GC-MS. More than 70% of organic compounds can be analyzed by high performance liquid chromatography, especially the separation and analysis of compounds with high boiling point, macromolecule, strong polarity and poor thermal stability, showing advantages.
3. ICP-MS method is fast, accurate and stable. It is widely used in the analysis of trace elements, rare earth elements and heavy metal elements in environmental protection, geology, metallurgy and other fields, such as water, atmosphere and soil. It is used in geology to determine trace and ultra-trace metal elements such as rocks, minerals and inclusions, and some halogen elements and non-metallic elements.
4. Inductively coupled plasma-emission spectrometer (ICP-OES) is mainly used for the determination of the content of main elements and some trace elements in environmental water, rocks, minerals, soils, river sediments, chemical products and other samples.
5. The ion chromatograph is mainly used for the analysis of environmental samples, including the analysis of anions and cations in surface water, drinking water, rainwater, domestic sewage and industrial wastewater, acid sediment and atmospheric particulates, and trace impurities in water and reagents related to the microelectronics industry. In addition, it is also widely used in the fields of food, sanitation, petrochemical, water and geology.
6. Trace harmful heavy metal elements in the atmosphere of atomic fluorescence spectrometer, and elements such as AS, Sb, Bi, Hg, Se, Ge in water and soil.
7. The atomic absorption spectrometer is applicable to the determination of nearly 70 trace elements and is widely used in metallurgy, geology, petroleum, chemical, agriculture, clinical, biochemical and environmental protection fields.