JPS6184548A - Emission analysis method - Google Patents

Abstract

PURPOSE:To obtain an emission analysis instrument provided with an atomizer having good using efficiency of an aq. soln. sample by constituting an atomizer of a liquid reserving part for the aq. soln. sample, gas supply pipe for atomization and capillary to suck up the aq. soln. sample. CONSTITUTION:The aq. sample soln. 10 is sucked up through a capillary 42 when gaseous argon is fed from the gas supply pipe 40 for atomization. The sample collides against a glass ball 44 at the top end and is pulverized to a mist form, by which mists 18 are efficiently generated. The mists consisting of the small grains sized 10-50mum among the formed mists 18 are carried together with the gaseous argon through a mist outlet 46 and enter argon plasma 26. The mists consisting of the large grain sizes fall or collide against the wall cap 48 of the atomizer 20. The mist sticking thereto fall and are again recovered into the sample reservoir 50. The sample 10 filled in the reservoir 50 is not consumed except that said sample is carried out together with the gaseous argon in the form of the mist from the outlet 46.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an optical emission analyzer, and particularly to an atomizer for aqueous solution samples.

[Background of the invention]

For example, the recently developed inductively coupled plasma
In the tively (:upled plasma) emission spectrometry, analysis is performed by emitting light from a water, yg, and yg liquid sample using argon plasma at a high temperature of 7,000 to 8,000° C., and observing the unique emission spectra of each element. Since the aqueous solution sample is introduced into the argon plasma in an atomized state, an atomizer is required.

FIG. 2 is a diagram showing an inductively coupled plasma light emitting unit equipped with a conventional atomizer.

The aqueous solution sample 10 was prepared with an inner diameter of 0.5 mm by supplying sialbone gas through the atomizing gas supply pipe 12 at a rate of 0.51 m/m.
It is sucked up by the thin tube 14 of the rm, and crushed into a rim shape at the tip of the boiler 16. Among the generated mist 18, large particles and those adhering to the wall of the atomizer 20 travel down the inclined wall of the atomizer 20) and fall as waste liquid 22.
It enters the drainage container 24.

Among the generated mist 18, small particles with a diameter of 10 to 30 μm are carried along with argon gas and generated in argon plasma 26.
to go into. 0.5t/yti from plasma gas supply pipe 28
g of argon gas is sent, and 12 t/- of argon gas is sent from the cooling gas supply pipe 30. A frequency of 2 is applied to these argon gas mud bundles by the flat frequency induction coil 32.
When the 7.12MHz/1 output power of 1500 watts is seen, Argo/ is ionized and a plasma 26 with a temperature of 500x is formed. A fog 18 is introduced into this plasma 26, and the elements dissolved in the aqueous solution sample 10 emit light.

,! Among the water bath liquid samples 10 sucked up from the J tube 2,
The amount of sample transported in g form to the argon plasma 2G by the argon gas flow is 0.1-7 m.

The remaining sample is discarded as waste liquid 22 into waste liquid container 24 . That is, only 5 out of the aqueous solution sample 10 sucked through the thin tube 14 is introduced into the plasma 26, and the remaining 95 out of the aqueous solution sample 10 is discarded as waste liquid.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art described above and to provide an optical emission spectrometer equipped with an atomizer that can efficiently use an aqueous sample.

[Summary of the invention]

In order to achieve the above object, the present invention provides an optical emission spectrometer in which an aqueous solution sample is atomized in an atomizer, then introduced into a high temperature section to emit light, and the emission spectra unique to each element are observed and analyzed. The atomizer includes a reservoir for the aqueous solution sample, an atomizing gas supply pipe, and a thin tube installed between the sample reservoir and the atomizing gas supply pipe to suck up the aqueous solution sample. This is what I did.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1, an aqueous solution sample 10 is connected to an atomizing gas supply pipe 4
By sending 0 to 0.5 t/mis of argon gas, it is sucked up from the p-tube 42 and collides with the glass bulb 44 at the tip, where it is crushed into a mist and effectively generates the mist 18.

A glass bulb 44 is provided at the tip of the thin tube 42 in order to increase the efficiency of fog generation. Among the generated mist 18, small particles having a particle size of 10 to 50 μm are carried along with the argon gas from the mist outlet 46 and enter the argon plasma 26. Larger particles may fall or fall onto the wall cover 48 of the atomizer 20.
The material that collides with and adheres to falls and is collected in the sample liquid reservoir 50 again. Therefore, the aqueous solution sample 10 filled in the sample liquid reservoir 50 is not consumed other than being carried out together with argon gas as a mist from the mist outlet 46. ) Fog 1 from late exit 46
8 and the amount of sample carried out with the argon gas is 0.
．． Since it is 01, it can be generated continuously for 40 minutes, for example, by filling 2-1 aqueous solution sample.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to obtain a luminescence spectrometer equipped with an atomizer that can efficiently use an aqueous solution sample.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an optical emission analyzer according to an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional optical emission analyzer. DESCRIPTION OF SYMBOLS 10... Aqueous solution sample, 18... Fog, 20... Atomizer, 26... Argon plasma, 28... Plasma gas supply pipe, 30... Cooling gas supply pipe, 32... High frequency induction coil, 40... Gas supply pipe for atomization, 42...
...Thin tube, 44...Glass bulb, 46...Mist outlet, 4
8.--Lid, O

Claims (1)

[Claims] 1. In an optical emission spectrometer that atomizes an aqueous solution sample using an atomizer, introduces it into a high-temperature section to emit light, and then observes and analyzes the unique emission spectrum of each element. a liquid reservoir, an atomizing gas supply pipe, and a thin tube installed between the sample liquid reservoir and the atomizing gas supply pipe to suck up the aqueous solution sample. Device.