Method for purifying and analyzing chlorine isotope in complex matrix sample
A chlorine isotope and complex matrix technology, applied in the analysis of materials, material analysis by electromagnetic means, material separation, etc., can solve problems such as interference, and achieve the effects of high precision, strong practicability, and high purification efficiency
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[0035] Example 1:
[0036] To determine the ratio of chlorine isotopes in three types of samples of groundwater, river water and rainwater, the steps are as follows:
[0037] A. Removal of organic matter in samples and sample purification:
[0038] Take a reversed-phase solid-phase extraction cartridge (C18, 1000mg / 6.0mlENVI-18, manufactured by SUPELCO), sequentially activate the solid-phase extraction column with 2mL methanol and 10mL pure water, and then pass the sample solution through the activated reversed-phase Solid phase extraction cartridge, the flow rate is controlled at 5mL / min;
[0039] B. Removal, separation and purification of inorganic interferences in samples:
[0040] B-1: Setting of ion chromatography conditions
[0041] Debug the signal trigger device and fraction collector of the isotope-specific preparative ion chromatograph (developed by the Institute of Hydrogeology, Environmental Geology, Chinese Academy of Geological Sciences, Model: Pre-Isotope) to ensure that ...
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