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
Inactive Publication Date: 2019-11-01
INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI +1
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Abstract
The invention provides a method for purifying and analyzing chlorine isotope in a complex matrix sample. The method comprises the following steps of A, removing organic matters in a sample and purifying the sample; B, removing inorganic interferent from the sample and carrying out separation and purification: B-1, collecting high-purity samples; B-2, selecting an ion chromatographic separation column, and adjusting the inhibition current of a suppressor to be 10-50mA greater than or above of the concentration recommended value of the corresponding eluent, and carrying out gradient elution; B-3, enabling a solution to pass through a microporous filter membrane to be filtered and then performing sampling and sample collection; B-4, carrying out concentration: baking the collected sample on aheating plate to remove a part of moisture; and B-5, enabling the distillate to pass through a cesium cation exchange resin column Cs column to obtain a high-purity cesium chloride solution; and C, carrying out thermal ionization mass spectrometry measurement and correction. The method disclosed by the invention is simple and convenient to operate and high in feasibility; the purification efficiency is extremely high; the purification effect of being close to 100% can be achieved by single purification; and the test background is low, the precision is high, and the method is suitable for batch sample test.
Application Domain
Component separationMaterial analysis by electric/magnetic means
Technology Topic
Collection sampleSample collection +13
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- Experimental program(1)
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PUM
Property | Measurement | Unit |
Aperture | 0.22 | µm |
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