CN112710729A - Ore formation information detection method by measuring trace elements in soil condensate - Google Patents
Ore formation information detection method by measuring trace elements in soil condensate Download PDFInfo
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- CN112710729A CN112710729A CN202011505335.0A CN202011505335A CN112710729A CN 112710729 A CN112710729 A CN 112710729A CN 202011505335 A CN202011505335 A CN 202011505335A CN 112710729 A CN112710729 A CN 112710729A
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- 239000002689 soil Substances 0.000 title claims abstract description 81
- 235000013619 trace mineral Nutrition 0.000 title claims abstract description 28
- 239000011573 trace mineral Substances 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 title description 7
- 230000015572 biosynthetic process Effects 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000033558 biomineral tissue development Effects 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims description 17
- 229910052770 Uranium Inorganic materials 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 238000005527 soil sampling Methods 0.000 claims description 5
- 229910052776 Thorium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000000918 plasma mass spectrometry Methods 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 3
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 11
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000005442 atmospheric precipitation Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
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Abstract
The invention discloses a method for detecting mineralization information by measuring trace elements in soil condensate, which comprises the following steps of sampling soil in a working area; secondly, pretreating a soil sample, and screening the collected soil sample through a stainless steel sieve of 20 meshes to remove large-particle-size particles and organic impurities; collecting the condensed water in the soil by utilizing a soil condensed water collecting device indoors; and step four, analyzing the content of various trace elements in the test liquid sample. By utilizing the technical scheme provided by the invention, the soil condensed water can be rapidly, efficiently and pollution-free collected indoors, the content of trace elements in the soil condensed water can be analyzed and tested, and the geochemical information related to deep mineralization can be rapidly obtained. The indoor collection of soil condensate water has effectually avoided a great deal of drawback of field collection gaseous state water, and the initiative stoving method can improve work efficiency by a wide margin, increases the sample volume of collecting.
Description
Technical Field
The invention relates to the technical field of mineral resource exploration, in particular to an mineralization information detection method by utilizing trace elements in soil condensation water for measurement.
Background
The measurement of the gaseous uranium in the earth is a uranium ore exploration method proposed in recent years. The method is based on the principle that uranium-containing ions or particles generated by deep uranium ore bodies can migrate to the near-surface under the action of various geological potentials and accumulate in the soil layer of the ground, so that the metageochemistry abnormity is formed. Uranium dispersed in soil air or existing in a gas-like phase can migrate along with the evaporation and diffusion of soil gaseous water, and by collecting the uranium in the free phase and analyzing and testing the uranium, geochemical information related to deep uranium mineralization can be found, and a basis is provided for deep uranium exploration. The method comprises the steps of burying a gaseous water collector in soil, collecting condensed water generated by day and night temperature difference, sending the collected liquid sample to a laboratory for analysis and test, and further finding out related abnormal information; the test method has certain test effect on sandstone-type and volcanic-type uranium ores. The principle of the method is suitable for most trace elements, and the same liquid sample can be used for synchronously testing various trace elements, so that the method can be used for detecting the mineralization information of various elements.
The method has the obvious advantages of simple operation and convenient analysis and test. However, in practical use, certain difficulties are encountered. In arid or semi-arid areas in the north, the collection of soil gaseous water is difficult, the collection period is long, the sample amount is small, and rework is often performed due to the small sample amount of some measuring points or the incapability of collecting the gaseous water. In southern wet areas, gaseous water is easier to collect; however, due to the large amount of precipitation, the collected sample is often contaminated by atmospheric precipitation during the embedment of the collector. Therefore, a fast, efficient and pollution-free measuring method is needed to effectively detect deep mineralization information.
Disclosure of Invention
The invention aims to provide an mineralization information detection method by utilizing trace elements in soil condensate water to solve the problems in the prior art and provide a basis for deep mineralization prediction of related elements.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an mineralization information detection method by utilizing trace elements in soil condensate to measure, which comprises the following steps:
firstly, sampling soil in a working area;
secondly, pretreating a soil sample, and screening the collected soil sample through a stainless steel sieve of 20 meshes to remove large-particle-size particles and organic impurities;
collecting the condensed water in the soil by utilizing a soil condensed water collecting device indoors;
and step four, analyzing the content of various trace elements in the test liquid sample.
Preferably, in the first step, soil sampling is carried out in a working area according to a specified scale and a specified mesh, soil samples with the depth of 10-40 cm are continuously collected at each sampling point, and the mass of each sample is not less than 1.5 kg.
Preferably, the soil condensed water collecting device comprises a thermostat, a plastic vent pipe, a microporous filter, a spiral glass condensing pipe and a test tube, wherein the plastic vent pipe is connected with the thermostat and the spiral glass condensing pipe, and the microporous filter is additionally arranged in the middle of the plastic vent pipe; the thermostated container is used for heating stoving soil sample, microporous filter is arranged in filtering the soil particle that escapes from soil, the spiral glass condenser pipe is used for condensing gaseous water and produces the condensate water, the test tube is used for accepting the liquid sample that the spiral glass condenser pipe condenses.
Preferably, the highest set temperature of the constant temperature box is not lower than 110 ℃; the pore diameter of the microporous filter is not more than 1 μm.
Preferably, 1kg of the treated soil sample is weighed and placed in the constant temperature box, and is dried for 2-8 h at 105 ℃, and the test tube is used for receiving the liquid sample flowing out of the spiral glass condenser tube.
Preferably, in the fourth step, the liquid sample collected in the test tube is sealed and sent to a laboratory for testing the trace element content of U, Th, Mo, Pb, Cu and Zn by using plasma mass spectrometry.
Compared with the prior art, the invention has the following beneficial technical effects:
by utilizing the technical scheme provided by the invention, the soil condensed water can be rapidly, efficiently and pollution-free collected indoors, the content of trace elements in the soil condensed water can be analyzed and tested, and the geochemical information related to deep mineralization can be rapidly obtained. The indoor collection of soil condensate water has effectually avoided a great deal of drawback of field collection gaseous state water, and the initiative stoving method can improve work efficiency by a wide margin, increases the sample volume of collecting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a soil condensate collection device;
wherein, 1-a constant temperature box; 2-a plastic vent pipe; 3-a microporous filter; 4-a spiral glass condenser tube; 5-test tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an mineralization information detection method by utilizing trace elements in soil condensate water to solve the problems in the prior art and provide a basis for deep mineralization prediction of related elements.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The embodiment provides an mineralization information detection method by utilizing soil condensed water trace element measurement, which comprises the following steps:
firstly, sampling soil in a working area;
step two, pretreating a soil sample;
collecting the condensed water in the soil by using a collecting device indoors;
and step four, analyzing the content of various trace elements in the test liquid sample.
Specifically, step one, carry out soil sampling in the workspace: soil sampling is carried out in a working area according to a certain scale and a certain mesh, soil samples with the depth of 10-40 cm are continuously collected at each sampling point, and the mass of each sample is not less than 1.5 kg.
In the second step, the soil sample is pretreated: and (3) screening the collected soil sample through a stainless steel sieve of 20 meshes, and filtering out large-particle-size particles and organic impurities.
In the third step, the condensed water in the soil is collected by a collecting device indoors:
the structure schematic diagram of the soil condensed water collecting device is shown in fig. 1, and the soil condensed water collecting device comprises a constant temperature box 1, a plastic vent pipe 2, a microporous filter 3, a spiral glass condensation pipe 4 and a test tube 5. The plastic vent pipe 2 is connected with the thermostat 1 and the spiral glass condenser pipe 4, and the middle part of the plastic vent pipe is additionally provided with the microporous filter 3. Thermostated container 1 is used for heating stoving soil sample, and microporous filter 3 is arranged in filtering the soil particle that escapes from soil, and spiral glass condenser pipe 4 is used for condensation gaseous state water, produces the condensate water, and test tube 5 is used for accepting the liquid sample. The highest set temperature of the constant temperature box 1 is not lower than 110 ℃, and the pore diameter of the microporous filter 3 is not more than 1 μm.
Weighing 1kg of treated soil sample, placing the soil sample in a constant temperature box 1, drying for 2-8 h at 105 ℃, and using a test tube 5 to receive the liquid sample flowing out of a condensation tube.
In the fourth step, the contents of various trace elements in the test liquid sample are analyzed:
the liquid sample collected in the test tube 5 is sealed and sent to a laboratory for testing the content of trace elements such as U, Th, Mo, Pb, Cu, Zn and the like by using plasma mass spectrometry (ICP-MS).
Example one
Taking uranium and multi-metal exploration in certain places in south China as an example, the exploration scale is 1:250000, and the mesh size is 250m multiplied by 50 m.
Step one, soil sampling is carried out in a working area:
sampling is carried out in a working area according to the mesh size of 250m multiplied by 50m, soil samples with the depth of 10-40 cm are continuously collected at each sampling point, each sample is not less than 1.5kg, and the mass is not less than 1kg after the soil samples pass through a 20-mesh stainless steel sieve.
Step two, pretreating a soil sample:
and (3) screening the collected soil sample by a stainless steel sieve of 20 meshes, filtering out large-particle-size particles and organic impurities, wherein the mass of the screened sample is not less than 1 kg.
Step three, collecting the condensed water in the soil by utilizing a soil condensed water collecting device indoors:
the structure schematic diagram of the soil condensed water collecting device is shown in fig. 1, and the soil condensed water collecting device comprises a constant temperature box 1, a plastic vent pipe 2, a microporous filter 3, a spiral glass condensation pipe 4 and a test tube 5. The plastic vent pipe 2 is connected with the thermostat 1 and the spiral glass condenser pipe 4, and the middle part of the plastic vent pipe is additionally provided with the microporous filter 3. Thermostated container 1 is used for heating stoving soil sample, and microporous filter 3 is arranged in filtering the soil particle that escapes from soil, and spiral glass condenser pipe 4 is used for condensation gaseous state water, produces the condensate water, and test tube 5 is used for accepting the liquid sample. The highest set temperature of the constant temperature box 1 is not lower than 110 ℃, and the pore diameter of the microporous filter 3 is not more than 1 μm.
Weighing 1kg of treated soil sample, placing the soil sample in a constant temperature box 1, drying for 2-8 h (preferably collecting sufficient condensed water) under the condition of 105 ℃ (low drying efficiency and high temperature can cause oxidative decomposition and volatilization of organic matters), and using a test tube 5 to receive the liquid sample flowing out of a condensation pipe in the process.
Analyzing the content of various trace elements in the test liquid sample:
the liquid sample collected in the test tube 5 is sealed and sent to a laboratory for testing the content of trace elements such as U, Th, Mo, Pb, Cu, Zn and the like by using plasma mass spectrometry (ICP-MS).
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. A method for detecting mineralization information by measuring trace elements in soil condensate is characterized by comprising the following steps:
firstly, sampling soil in a working area;
secondly, pretreating a soil sample, and screening the collected soil sample through a stainless steel sieve of 20 meshes to remove large-particle-size particles and organic impurities;
collecting the condensed water in the soil by utilizing a soil condensed water collecting device indoors;
and step four, analyzing the content of various trace elements in the test liquid sample.
2. The method for detecting mineralization information by measurement of trace elements in soil condensate according to claim 1, wherein: in the first step, soil sampling is carried out in a working area according to a specified scale and a specified mesh, soil samples with the depth of 10-40 cm are continuously collected at each sampling point, and the mass of each sample is not less than 1.5 kg.
3. The method for detecting mineralization information by measurement of trace elements in soil condensate according to claim 1, wherein: the soil condensed water collecting device comprises a constant temperature box, a plastic vent pipe, a micro-pore filter, a spiral glass condensing pipe and a test tube, wherein the plastic vent pipe is connected with the constant temperature box and the spiral glass condensing pipe, and the micro-pore filter is additionally arranged in the middle of the plastic vent pipe; the thermostated container is used for heating stoving soil sample, microporous filter is arranged in filtering the soil particle that escapes from soil, the spiral glass condenser pipe is used for condensing gaseous water and produces the condensate water, the test tube is used for accepting the liquid sample that the spiral glass condenser pipe condenses.
4. The method for detecting mineralization information by measurement of trace elements in soil condensate according to claim 3, wherein: the highest set temperature of the constant temperature box is not lower than 110 ℃; the pore diameter of the microporous filter is not more than 1 μm.
5. The method for detecting mineralization information by measurement of trace elements in soil condensate according to claim 3, wherein: weighing 1kg of the treated soil sample, placing the soil sample in the constant temperature box, drying for 2-8 h at 105 ℃, and carrying the liquid sample flowing out of the spiral glass condenser tube by using the test tube.
6. The method for detecting mineralization information by measurement of trace elements in soil condensate according to claim 1, wherein: in the fourth step, the liquid sample collected in the test tube is sealed and sent to a laboratory for testing the trace element content of U, Th, Mo, Pb, Cu and Zn by using a plasma mass spectrometry method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011505335.0A CN112710729A (en) | 2020-12-18 | 2020-12-18 | Ore formation information detection method by measuring trace elements in soil condensate |
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| CN202011505335.0A CN112710729A (en) | 2020-12-18 | 2020-12-18 | Ore formation information detection method by measuring trace elements in soil condensate |
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Application publication date: 20210427 |