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This standard specifies the determination of filterable potassium and sodium by flame atomic absorption spectrophotometry. He is suitable for surface water and drinking water determination. The measuring range of potassium is 0.05 ～ 4.00m8 / L; sodium is 0.01 ～ 2.00mg / L. For samples with

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In this paper, capillary gas chromatography, flame thermal ionization detector FTD and electron capture detector ECD were used to study the separation behavior of 86 pesticides. The 86 pesticides were investigated in four different fixed liquid fused silica capillary columns DB1, DB5, DB7 The relati

When using gas or liquid chromatography for pesticide residue analysis, the matrix effect will seriously affect the accurate quantification and qualitative determination of certain analytes. The matrix effect is investigated and evaluated and effective measures are taken to eliminate or compensate.

The application of anti-SCC materials The application of corrosion-resistant alloys is one of the most reliable methods to improve the life of metal structures and equipment. In addition, aluminum and aluminum alloys, titanium and titanium alloys have also been gradually applied in the exploitatio

The basic knowledge of mass spectrometry combined technology liquid chromatography / mass spectrometry interface ion evaporation and API ion source LC / MS / MS application neonatal disease screening drug metabolic conjugate determination of natural products analysis biotechnology-molecular weight d