Column-filling and concentrated column for analyzing metal elements

A technology of metal elements and column packing, which is applied to the column packing and concentration column for metal elements contained in estuary water and river water, and in the field of seawater analysis, which can solve the problems of cost reduction, column packing use range, cost reduction and limitation of concentration columns, etc. , to reduce costs and simplify the sample processing process

Inactive Publication Date: 2009-06-17
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of column packing and concentration column can simplify the sample processing flow and the structure of the sample processing device, improve the sample processing speed, and Hg 2+ Adsorbed on the concentrated column, but when the polar or medium polar or non-polar macroporous adsorption resin is put on the column or soaked, the treatment agent [3mol / L NH 4 OH-1mol / L HAC-3.0~6.0×10 -4 mol / L pyridine-(2-azo-4-)resorcinol mixture or 0.5mol / L Na 2 HPO 4 -1.0~2.0×10 -4 The amount of mol / L pyridine-(2-azo-4-)resorcinol mixture] is relatively large, which limits the cost reduction and hinders the expansion of the use range of the column packing and the further reduction of the cost of the concentrated column

Method used

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  • Column-filling and concentrated column for analyzing metal elements

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The column packing in this example is made of non-polar macroporous adsorption resin after static soaking treatment. The non-polar macroporous adsorption resin is selected from Amberlite XAD-1~Amberlite XAD-5 produced by Rohm & Hass Company of the United States and Nankai University in Tianjin, China. The production of D3520, the process steps are as follows:

[0023] 1. Soaking swelling and purification

[0024] Put the above-mentioned non-polar macroporous adsorption resin into a container with ethanol and soak it at 25°C (the amount of ethanol is not strictly required, just submerge the non-polar macroporous adsorption resin). Swelling requirements, and then wash the soaked and swollen resin with deionized water until it does not contain ethanol.

[0025] 2. Static immersion treatment with treatment solution I

[0026] With 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol, Na 2 B 4 o 7 10H 2 O, HCl, polyethylene glycol octylphenyl ether (OP emulsifier) ​​and deion...

Embodiment 2

[0035]The structure of the concentration column in this embodiment is as shown in Figure 1, and mainly consists of a column body, a filter membrane 6 and a column packing 8; the column body is made of nylon, including a column tube 7, plugs 5 located at both ends of the column tube lumen, The pressure tube bolt 2 that applies pressure to the plug, the connecting sleeve 3 connecting the column tube and the pressure tube bolt, the conduit 1 is installed in the center hole of the pressure tube bolt 2, and the insertion end of the conduit 1 is provided with a disc that is attached to the plug. A sealing ring 4 is installed between the disc-shaped body and the end face of the pressure tube bolt, and the conduit 1 communicates with the center hole of the plug 5 to form a liquid input and output channel; the filter membrane 6 is made of nylon silk and is respectively installed on the The plugs at both ends of the inner cavity of the column tube are inserted into the end faces of the s...

Embodiment 3

[0061] The column packing in this example is formed by static immersion treatment of medium-polar macroporous adsorption resin, and the medium-polarity macroporous adsorption resin is selected from Amberlite XAD-6, Amberlite XAD-7, and AmberliteXAD-8 produced by Rohm & Hass Company of the United States. The process steps are as follows:

[0062] 1. Soaking swelling and purification

[0063] Put the above-mentioned medium-polar macroporous adsorption resin into a container filled with ethanol and soak it at 20°C (the amount of ethanol is not strictly required, just submerge the medium-polar macroporous adsorption resin). Swelling requirements, and then wash the soaked and swollen resin with deionized water until it does not contain ethanol.

[0064] 2. Static immersion treatment with treatment solution I

[0065] With 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol, Na 2 B 4 o 7 10H 2 O, HCl, polyethylene glycol octyl phenyl ether (OP emulsifier) ​​and deionized water were ...

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Abstract

The invention relates to a method of analyze column packing and enrichment column for tantalum, column packing is composed of swelling, the purified polarity of polar or neutral-polar or non-polar macroporous resin treated with liquid I or soaking liquid H static swim or dynamic column; the treat liquid I is a admixing water solution of 0.02-0.06g / L2-(5-bromine-2-pyridine idol nitrogen)-5-lignocaine phenols,1.60-1.90g / LNa2B4O7.10H2O,6.0*10-3-8.0*10-3mol / L HCl,the volume percent 0.3-0.8% of carbowax macrogol polyethylene glycol polyglycol octyl phenyl ether; The treat liquid II is the admixing water solution of 0.04-0.10g / L 2-(5-bromine-2-pyridine idol nitrogen)-5-lignocaine phenols,0.05-0.08mol / Lg lycin,0.05-0.08mol / L NaOH,0.010-0.015mol / L NaCl, the volume percent 0.3-0.8%carbowax macrogol polyethylene glycol polyglycol octyl phenyl ether.

Description

technical field [0001] The invention belongs to a column packing and a concentration column for analyzing metal elements, in particular to a column packing and a concentration column for analyzing metal elements contained in seawater, estuary water and river water. Background technique [0002] Column packing is an important part of the concentration column, which is a key part of the instrument for analyzing the metal elements contained in seawater, estuary water, and river water. For example, it can be combined with ion chromatography analyzer, flow injection analyzer, inductively coupled plasma emission Spectrum-mass spectrometer combined analyzer, atomic absorption spectrophotometer and other instruments are used together to enrich and analyze the metal elements in the sample, and the column packing plays the role of enrichment and separation in the concentration column. Therefore, research on column packing and concentration columns has never been interrupted. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/281B01J20/32
CPCB01J20/26B01J20/285B01D15/20G01N33/1813
Inventor 张新申蒋小萍
Owner SICHUAN UNIV
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