Low background earth atmosphere exploration method suitable for uranium resource exploration

Abstract

The invention belongs to the field of uranium resource exploration, in particular discloses a low background earth atmosphere exploration method suitable for uranium resource exploration, which comprises the following steps: soaking polyester film explorers in deionized water in a ultrasonic cleaner, and using ultrasonic waves and the deionized water to clean the polyester film explorers for at least 90 minutes; after drying the polyester film explorers, manufacturing the dried polyester film explorers into earth atmosphere explorers; setting measuring lines at equal intervals, wherein a plurality of points are formed on each measuring line; excavating a deep pit below each measuring point, and putting the explorers which are suspended with thin lines at the bottoms of the pits; embeddingthe earth atmosphere explorers for at least 30 days; when the preset time is due, taking out the earth atmosphere explorer corresponding to each measuring point; after preprocessing the earth atmosphere explorers by ashing and acid dissolution, using a plasma mass spectrometer to measure uranium in samples; and carrying out normalizing the weights of the polyester film earth atmosphere explorers to obtain nano-grade uranium content. The method of the invention obtains nano-grade uranium particle information with a high signal-to-noise ratio caused by concealed uranium mineralization in uraniumresource exploration.

Description

technical field [0001] The invention belongs to the field of uranium resource exploration, and in particular relates to a low-background ground gas exploration method suitable for uranium resource exploration. Background technique [0002] In the exploration of concealed uranium resources, geogas measurement method is an effective method for locating deep uranium ore bodies. The sampling object measured by the earth gas uranium detection method is: the nano-scale uranium particles carried into the soil layer by the earth gas flowing through the ore body. The detector used for the earth gas (uranium) measurement is a polyester film, and the natural Trace amounts of uranium attached to a polyester film. The polyester film purchased from the market has different impurities and dirt content due to different manufacturers. If it is directly used as an earth gas detector, the impurities and dirt it contains will become earth gas detectors. A kind of interference of measurement; ...

AI Technical Summary

Problems solved by technology

Relevant domestic departments mostly use normal water to rinse the polyester film used as geogas detectors, which has achieved certain results in reducing impurities, but it is still not clean; in the exploration of uranium resources, the field burial method and the most The best burial time of geogas detectors has not been reported; geogas measurement methods at home and abroad are still based on profile measurement, and it is difficult to eliminate the influence of volume effect