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A soil sample pretreatment device for detecting heavy metal content in lead-zinc slag

A technology for soil samples and heavy metals, applied in the field of soil detection, can solve problems such as inability to integrate digestion and acid removal devices, low efficiency during detection, environmental pollution, etc., and achieve good digestion effect, convenient operation, and simple use

Active Publication Date: 2021-12-21
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of society, the mining of lead-zinc minerals leads to environmental pollution. The soil in the mining area will be polluted by different substances according to the different minerals mined. Heavy metals are the main form of soil pollution. Treatment, to remove the interference from the detected substances as much as possible. In the prior art, the soil is acidified and then digested, but the digestion and acid removal devices are often not integrated, resulting in low detection efficiency. Therefore, an easy-to-add Integrated device for reagents and acid removal

Method used

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  • A soil sample pretreatment device for detecting heavy metal content in lead-zinc slag
  • A soil sample pretreatment device for detecting heavy metal content in lead-zinc slag
  • A soil sample pretreatment device for detecting heavy metal content in lead-zinc slag

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Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1: as figure 1 As shown, a soil sample pretreatment device for the detection of heavy metal content in lead-zinc slag, including a microwave digestion device 1, a reagent addition device 2, and an acid removal device 3, the reagent addition device 2 is fixedly installed on the upper right of the microwave digestion device 1 The acid removal device 3 is fixedly installed on the left side of the microwave digestion device 1. The microwave digestion device 1 includes a digestion shell 11, a lifting mechanism 12, an agitator 13, a digestion tank 14, a magnetron 15, a connecting channel 16, a high-voltage rectifier 17, Transformer 18, PLC controller 19, control panel 191, digestion bin 192, fixed frame 193, digestion bin 192 is fixedly connected above the lifting mechanism 12, the bottom of the lifting mechanism 12 is fixedly connected with the bottom of the digestion shell 11, and the bottom of the lifting mechanism 12 The top is hinged with a lifting disc 121, a...

Embodiment 2

[0031] like figure 1 As shown, a soil sample pretreatment device for the detection of heavy metal content in lead-zinc slag, including a microwave digestion device 1, a reagent addition device 2, and an acid removal device 3, the reagent addition device 2 is fixedly installed on the upper right of the microwave digestion device 1 The acid removal device 3 is fixedly installed on the left side of the microwave digestion device 1. The microwave digestion device 1 includes a digestion shell 11, a lifting mechanism 12, a stirrer 13, a digestion tank 14, a magnetron 15, a connecting channel 16, a high-voltage rectifier 17, Transformer 18, PLC controller 19, control panel 191, digestion bin 192, fixed frame 193, digestion bin 192 is fixedly connected above the lifting mechanism 12, the bottom of the lifting mechanism 12 is fixedly connected with the bottom of the digestion shell 11, and the bottom of the lifting mechanism 12 The top is hinged with a lifting disc 121, and the center ...

Embodiment 3

[0037] like figure 1 As shown, a soil sample pretreatment device for the detection of heavy metal content in lead-zinc slag, including a microwave digestion device 1, a reagent addition device 2, and an acid removal device 3, the reagent addition device 2 is fixedly installed on the upper right of the microwave digestion device 1 The acid removal device 3 is fixedly installed on the left side of the microwave digestion device 1. The microwave digestion device 1 includes a digestion shell 11, a lifting mechanism 12, a stirrer 13, a digestion tank 14, a magnetron 15, a connecting channel 16, a high-voltage rectifier 17, Transformer 18, PLC controller 19, control panel 191, digestion bin 192, fixed frame 193, digestion bin 192 is fixedly connected above the lifting mechanism 12, the bottom of the lifting mechanism 12 is fixedly connected with the bottom of the digestion shell 11, and the bottom of the lifting mechanism 12 The top is hinged with a lifting disc 121, and the center ...

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Abstract

The invention discloses a soil sample pretreatment device for detecting the heavy metal content of lead-zinc slag, relates to the technical field of soil detection, and includes a microwave digestion device, a reagent adding device, and an acid removal device. The reagent adding device is fixedly installed on the On the upper right of the microwave digestion device, the acid removal device is fixedly installed on the left side of the microwave digestion device. The present invention pre-processes the soil sample, and can perform microwave drying on the soil sample. Afterwards, it is digested by microwave, and the digested gas enters the acid removal device for acid gas treatment. This device integrates multiple functions and can improve the processing efficiency in the pre-treatment of soil samples.

Description

technical field [0001] The invention relates to the technical field of soil detection, in particular to a soil sample pretreatment device used for detection of heavy metal content in lead-zinc slag. Background technique [0002] Soil environment monitoring refers to the determination of environmental quality (or pollution degree) and its changing trend through the determination of representative values ​​of factors affecting soil environmental quality. What we usually refer to as soil monitoring refers to soil environmental monitoring, which generally includes technical content such as point sampling, sample preparation, analysis methods, result characterization, data statistics, and quality evaluation. [0003] In 2013, my country's lead and zinc production totaled 9.78 million tons, accounting for 41% of the world's total lead and zinc production. Lead and zinc have been ranked the world's largest producer for 12 consecutive years and 22 years respectively. However, the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N1/44
CPCG01N1/28G01N1/44
Inventor 郑丽萍王国庆
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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