Detection method and detection device of rare earth elements in pore water

A detection method and technology of rare earth elements, applied in the field of detection methods and detection devices of rare earth elements in pore water, can solve the problems of poor accuracy of detection results, high loss of instruments, low recovery rate, etc., and achieve improved accuracy and elution rate Fast, avoid pollution effect

Active Publication Date: 2022-06-21
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing analysis methods have the following problems: (1) the pretreatment process cannot remove the interference of multiple elements at the same time, and the accuracy of the detection results is poor; (2) the REEs enrichment process is relatively complicated, consumes a large amount of reagents and is time-consuming Long, low recovery rate; (3) The demand for sample volume is large, and the online test also causes a lot of equipment loss; (4) The REEs enrichment process does not achieve the effective enrichment of REEs, and it is easier to produce Pollution

Method used

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  • Detection method and detection device of rare earth elements in pore water
  • Detection method and detection device of rare earth elements in pore water
  • Detection method and detection device of rare earth elements in pore water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The present embodiment provides a pretreatment method for rare earth element testing, which includes the following steps:

[0067] (1) Resin cleaning and filling

[0068] The NOBIAS chelate-PA1 resin was placed in a 50 mL centrifuge tube, and washed 4 times with 10 mL of methanol and 10 mL of deionized water, respectively. After cleaning, the resin was soaked in deionized water.

[0069] Use a pipette to suck up the mixed solution of deionized water soaked with resin. First, rely on gravity to slowly fill the resin tube (length 2cm) with the resin. When the filling is nearly full, let the deionized water flow through the resin driven by the peristaltic pump.

[0070] (2) Equipment assembly

[0071] using as figure 1 A set of pretreatment devices shown in the enrichment and elution work, according to figure 1 The positional relationship in the connection processing device.

[0072] The resin in the equipment is cleaned before adsorption after equipment assembly. The...

Embodiment 2

[0086] The present embodiment provides a pretreatment method for rare earth element testing, which includes the following steps:

[0087] (1) Resin cleaning and filling

[0088] The NOBIAS chelate-PA1 resin was placed in a 50 mL centrifuge tube, and washed 4 times with 10 mL of methanol and 10 mL of deionized water, respectively. After cleaning, the resin was soaked in deionized water.

[0089] Use a pipette to suck up the mixed solution of deionized water soaked with resin. First, rely on gravity to slowly fill the resin tube (length 2cm) with the resin. When the filling is nearly full, let the deionized water flow through the resin driven by the peristaltic pump.

[0090] (2) Equipment assembly

[0091] using as figure 1 A set of pretreatment devices shown in the enrichment and elution work, according to figure 1 The positional relationship in the connection processing device.

[0092] The resin in the equipment is cleaned before adsorption after equipment assembly. The...

Embodiment 3

[0103] The present embodiment provides a pretreatment method for rare earth element testing, which includes the following steps:

[0104] (1) Resin cleaning and filling

[0105] The NOBIAS chelate-PA1 resin was placed in a 50 mL centrifuge tube, and washed 4 times with 10 mL of methanol and 10 mL of deionized water, respectively. After cleaning, the resin was soaked in deionized water.

[0106] Use a pipette to suck up the mixed solution of deionized water soaked with resin. First, rely on gravity to slowly fill the resin tube (length 2cm) with the resin. When the filling is nearly full, let the deionized water flow through the resin driven by the peristaltic pump.

[0107] (2) Equipment assembly

[0108] using as figure 1 A set of pretreatment devices shown in the enrichment and elution work, according to figure 1 The positional relationship in the connection processing device.

[0109] The resin in the equipment is cleaned before adsorption after equipment assembly. The...

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Abstract

The invention discloses a detection method and a detection device for rare earth elements in pore water, and relates to the technical field of rare earth element detection. The detection method of rare earth elements in pore water uses the adsorption pipeline formed by the sample tank and the adsorption tube to make the liquid to be adsorbed on the resin in the adsorption tube, and then uses the elution pipeline formed by the eluent tank, the adsorption tube and the eluting sample tank The pressure gas and eluent are passed into the adsorption tube, and the substances adsorbed on the resin are eluted into the eluent sample tank. The method for detecting rare earth elements in pore water comprises that a sample tank, an adsorption tube and a pump group are sequentially connected to form an adsorption pipeline, and an eluent tank, an adsorption tube and an eluting sample tank are sequentially connected to form an elution pipeline. The enrichment process of rare earth elements is carried out by using a closed pipeline, which avoids the pollution of the external environment; the elution is carried out in parallel by using pressure gas and eluent, which has a fast elution rate and good effect, and improves the accuracy of the subsequent detection process.

Description

technical field [0001] The invention relates to the technical field of rare earth element detection, and in particular to a detection method and a detection device of rare earth elements in pore water. Background technique [0002] Rare earth elements (REEs) are very important tracers for geochemical processes in the ocean, but their analysis and testing have always been difficult because their concentrations are mostly in the order of pmol / kg. Especially in the test of rare earth elements in sediment pore water, because only about 10mL is obtained from sediment centrifugation each time, the salinity is close to that in seawater, and the organic matter content is also high, which increases the difficulty of analysis and testing. In order for rare earth elements to be more widely used in marine research, accurate measurement of low concentrations of rare earth elements in sediment pore water is necessary. [0003] Inductively coupled plasma mass spectrometry (ICP-MS) can per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/73G01N1/34
Inventor 王小静李力石学法刘季花刘洪娜
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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