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Portable reductant tablet for rapid on-site atomic fluorescence detection as well as preparation method and application thereof

A technology of atomic fluorescence and reducing agent, which is applied in the field of atomic fluorescence analysis, can solve the problems of unsuitable rapid detection and cumbersome operation process, and achieve the effects of improving convenience and operability, simplifying the analysis process, and simple operation

Active Publication Date: 2012-10-17
BEIJING BEIFEN RUILI ANALYTICAL INSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve the above problems, the purpose of the present invention is to solve the problem that the operation process of preparing the reducing agent solution in the laboratory is relatively cumbersome, and it is not suitable for rapid detection in the field. A reducing agent tablet is designed, which has good portability and can be used Simple, can greatly simplify the preparation process of reducing agent solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Taking the preparation of a cold atom-type reducing agent tablet with a mass ratio of reducing agent and stabilizer of 1 / 1 as an example, the preparation process is described in detail as follows:

[0028] (1) Prepare solid reagents potassium hydroxide and potassium borohydride, weighing paper, medicine spoon, agate mortar, 1 / 10,000 electronic balance and tablet press;

[0029] (2) Place the weighing paper on the weighing pan of the electronic balance, deduct its weight, transfer the solid reagent potassium hydroxide to the weighing paper with a medicine spoon, weigh 0.100g of potassium hydroxide quantitatively, and grind it with agate. Grind into powder form;

[0030] (3) Put a new weighing paper on the weighing pan of the electronic balance, deduct its weight, transfer the solid reagent potassium borohydride to the weighing paper with a medicine spoon, weigh 0.100g of potassium borohydride quantitatively, and then use ground into a powder in an agate mortar;

[0031...

Embodiment 2

[0036] Taking the cold atom type reducing agent tablet with the mass ratio of reducing agent and stabilizer being 2 / 5 as an example, the preparation process is described in detail as follows:

[0037] (1) Prepare solid reagents sodium hydroxide and sodium borohydride, weighing paper, medicine spoon, agate mortar, 1 / 10,000 electronic balance and tablet press;

[0038] (2) Put the weighing paper on the weighing pan of the electronic balance, deduct its weight, transfer the solid reagent sodium hydroxide to the weighing paper with a medicine spoon, weigh 0.500g sodium hydroxide quantitatively, and grind it with agate. Grind into powder form;

[0039] (3) Put a new weighing paper on the weighing pan of the electronic balance, deduct its weight, transfer the solid reagent sodium borohydride to the weighing paper with a medicine spoon, weigh 0.200g sodium borohydride quantitatively, and then use ground into a powder in an agate mortar;

[0040] (4) Mix the powder obtained in step ...

Embodiment 3

[0045] Taking the preparation of a cold atom type reducing agent tablet with a mass ratio of reducing agent and stabilizer of 5 / 10 as an example, the preparation process is described in detail as follows:

[0046] (1) Prepare solid reagents potassium hydroxide and potassium borohydride, weighing paper, medicine spoon, agate mortar, 1 / 10,000 electronic balance and tablet press;

[0047] (2) Put the weighing paper on the weighing pan of the electronic balance, deduct its weight, transfer the solid reagent potassium hydroxide to the weighing paper with a medicine spoon, weigh 1.000g of potassium hydroxide quantitatively, and grind it with agate. Grind into powder form;

[0048] (3) Put a new weighing paper on the weighing pan of the electronic balance, deduct its weight, transfer the solid reagent potassium borohydride to the weighing paper with a medicine spoon, weigh 0.500g of potassium borohydride quantitatively, and then use ground into a powder in an agate mortar;

[0049]...

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Abstract

The invention relates to a portable reductant tablet for rapid on-site atomic fluorescence detection. The reductant tablet comprises a flame type reductant tablet and a cold atom type reductant tablet, wherein the cold atom type reductant tablet comprises the following components in parts by weight: 1-5 parts of reductant, and 1-10 parts of stabilizer; the flame type reductant tablet comprises the following components in parts by weight: 5-20 parts of reductant and 1-5 parts of stabilizer; and the reductant is potassium borohydride or sodium borohydride, and the stabilizer is potassium hydroxide or sodium hydroxide. According to the invention, the technical scheme solves the problems that when rapid on-site atomic fluorescence detection is carried out, a plurality of objects, such as a balance, a weighing paper, a medicine spoon, the reductant and the stabilizer, are difficult to carry, and the reductant tablet is hard to weigh due to the changes of the field environment. The portable reductant tablet can be only used by being dissolved with pure water in proportion. The portable reductant tablet is simple to operate, stable in property and portable, thereby further improving the portability and the operability of rapid on-site atomic fluorescence detection, further simplifying the analysis process and enhancing the analysis efficiency. Moreover, the portable reductant tablet can rapidly provide reference data for the emergency decision of environmental pollution.

Description

technical field [0001] The invention relates to the technical field of atomic fluorescence analysis, in particular to a reducing agent required by the vapor generation sampling technology. Background technique [0002] At present, the atomic fluorescence spectrometer generally adopts the vapor generation sampling technology as the sampling method of atomic fluorescence. The essence of steam generation sampling technology is to make the acidic solution containing the element to be measured and the reducing agent solution chemically react to generate gaseous substances. After gas-liquid separation, the gaseous components are separated from the sample matrix, so as to achieve efficient sampling and effectively eliminate The purpose of matrix interference has greatly improved the detection capabilities of atomic fluorescence spectrometers. The reducing agent is generally potassium borohydride or sodium borohydride solution, and sodium hydroxide or potassium hydroxide exists as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64G01N1/28
Inventor 梁敬董芳王庆侯爱霞陈璐杨名名
Owner BEIJING BEIFEN RUILI ANALYTICAL INSTR GROUP
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