CN202994665U

CN202994665U - Double-channel or multi-channel horizontal observing atomic fluorescence spectrometer

Info

Publication number: CN202994665U
Application number: CN 201220689369
Authority: CN
Inventors: 段旭川
Original assignee: Tianjin Normal University
Current assignee: Tianjin Normal University
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2013-06-12
Anticipated expiration: 2022-12-14

Abstract

The utility model relates to a horizontal observing device for an atomic fluorescence spectrometer. The observing device is characterized in that a window of a detector and the flame direction of an atomizer are on a same straight line, and two or more excitation light sources are located around the flame direction to be vertical to or form a certain angle with the flame direction. By adopting the atomic fluorescence spectrometer with the horizontal observing device, not only can detection sensitivity be improved to reduce detection limit, but also a plurality of elements can be simultaneously measured to improve detection speed.

Description

Two pass or multiple tracks level observation atomic fluorescence spectrometer

Technical field

The utility model relates to a kind of atomic fluorescence spectrometer, specifically relates to a kind of two pass or multiple tracks level observation atomic fluorescence spectrometer.

Background technology

The advantages such as atomic fluorescence is highly sensitive due to it, detection limit is low have been widely used in the mensuration of some important elements in every field.Yet present atomic fluorescence setting exists some shortcomings, this is mainly reflected in (1) when carrying out two or more element determination, hollow cathode lamp adopts pulse interleaved power mode, make different light sources replace the irradiated atoms device, and then the atomic fluorescence that alternately inspires different elements detects simultaneously, circuit and light source preparation more complicated; (2) due to excitation source and detecting device be positioned at atomizer flame around on same plane, be excited and produce fluorescence atom number fewer, the fluorescence of emission is more weak, and it is also smaller that the while detecting device receives fluorescence intensity, has limited the sensitivity and the detection limit that detect.

Summary of the invention

The utility model purpose is to overcome above-mentioned the deficiencies in the prior art, proposes a kind of two pass or multiple tracks level observation atomic fluorescence spectrometer.The disclosed a kind of two pass of the utility model or multiple tracks level observation atomic fluorescence spectrometer, comprise atomizer 2, excitation source 1 and detecting device 3, it is characterized in that described detector window 3 is positioned on atomizer flame kernel line, and excitation source 2 is positioned at or certain angle δ is arranged vertical with flame direction around flame.Wherein excitation source and flame kernel wire clamp angle are 0 at δ ⁰﹤ δ ﹤ 180 ⁰

Described detector window namely can be positioned on atomizer flame kernel line directly over (in face of flame direction), also can be positioned on atomizer flame kernel line under (in face of atomizer bottom).

The good effect that two pass described in the utility model or multiple tracks level observation atomic fluorescence spectrometer compared with prior art have is:

When (1) two pass described in the utility model or multiple tracks level observation atomic fluorescence spectrometer was measured, the fluorescence of emission was more intense, and it is also larger that the while detecting device receives fluorescence intensity, had improved the sensitivity and the detection limit that detect.

(2) realize multielement simultaneous determination, and this measure simultaneously namely can to adopt (make different light sources replace the irradiated atoms device to hollow cathode lamp pulse interleaved power mode, and then the atomic fluorescence that alternately inspires different elements detects simultaneously), also can cut light (periodicity printing opacity-be in the light) mode by sequential machine and measure.The typical setting is the band of a circle, the above is with a light hole, when by necessarily arranging when rotating this circle band, can make the light of the different excitation source of selection pass hole on this circle band and enter atomizer and excite, reach order and measure simultaneously purpose.

Description of drawings

Fig. 1 is present existing atomic fluorescence schematic diagram, and light source and detecting device are around the atomizer and angle right angle normally;

Fig. 2 is atomic fluorescence schematic diagram of the present utility model, and excitation source and atomizer flame direction have one greater than 90 ⁰The obtuse angle, detector window in face of flame direction and with the flame kernel line on the same straight line;

Fig. 3 is atomic fluorescence schematic diagram of the present utility model, and excitation source and atomizer flame direction have one less than 90 ⁰Acute angle, detector window in face of flame direction and with the flame kernel line on the same straight line;

Fig. 4 is atomic fluorescence schematic diagram of the present utility model, and excitation source and atomizer flame direction have one greater than 90 ⁰The obtuse angle, detector window be positioned under atomizer (in face of the atomizer bottom) and with the flame kernel line on the same straight line;

Fig. 5 is atomic fluorescence schematic diagram of the present utility model, and excitation source and atomizer flame direction have one less than 90 ⁰Acute angle, detector window be positioned under atomizer (in face of the atomizer bottom) and with the flame kernel line on the same straight line;

Fig. 6 is that the utility model is with a plurality of excitation source top views or vertical view;

Fig. 7 is atomic fluorescence schematic diagram of the present utility model, excitation source (δ=90 vertical with atomizer ⁰), detector window in face of flame direction and with the flame kernel line on the same straight line;

Fig. 8 is atomic fluorescence schematic diagram of the present utility model, excitation source (δ=90 vertical with atomizer ⁰), detector window be positioned under atomizer (in face of the atomizer bottom) and with the flame kernel line on the same straight line.

Embodiment:

Below in conjunction with embodiment, the utility model is described, the scheme of embodiment described here, do not limit the utility model, one of skill in the art can make improvements and change according to spirit of the present utility model, described these improvement and variation all should be considered as in scope of the present utility model, and scope of the present utility model and essence are limited by claim.

Embodiment 1

A kind of two pass or multiple tracks level observation atomic fluorescence spectrometer comprise atomizer 2, excitation source 1 and detecting device 3, and detector window 3 is positioned on atomizer flame kernel line, and flame direction is vertical on every side with also and excitation source 1 is positioned at flame.Detector window namely can be positioned on atomizer flame kernel line directly over (in face of flame direction), also can be positioned on atomizer flame kernel line under (in face of atomizer bottom).The present embodiment is preferred, because the signal to noise ratio (S/N ratio) that measure this moment is best.

Embodiment 2

A kind of two pass or multiple tracks level observation atomic fluorescence spectrometer, comprise atomizer 2, excitation source 1 and detecting device 3, detector window 3 is positioned on atomizer flame kernel line, and excitation source 1 is positioned at around flame and has one less than 90 with the atomizer flame direction ⁰Acute angle, detector window in face of flame direction and with the flame kernel line on the same straight line.This kind is set to preferably, because the remolding sensitivity that measure this moment is better.

Embodiment 3

A kind of two pass or multiple tracks level observation atomic fluorescence spectrometer comprise atomizer 2, excitation source 1 and detecting device 3, and detector window 3 is positioned on atomizer flame kernel line, and excitation source 1 has one greater than 90 with the atomizer flame direction around being positioned at flame ⁰The obtuse angle, detector window in face of flame direction and with the flame kernel line on the same straight line.This kind is set to preferably, because the remolding sensitivity that measure this moment is better.

Embodiment 4

A kind of two pass or multiple tracks level observation atomic fluorescence spectrometer, comprise atomizer 2, excitation source 1 and detecting device 3, described detector window 3 is positioned on atomizer flame kernel line, and excitation source 1 is positioned at around flame and has one less than 90 with the atomizer flame direction ⁰Acute angle, detector window be positioned under atomizer (in face of the atomizer bottom) and with the flame kernel line on the same straight line.This kind is set to preferably, because the remolding sensitivity that measure this moment is better.

Embodiment 5

A kind of two pass or multiple tracks level observation atomic fluorescence spectrometer, comprise atomizer 2, excitation source 1 and detecting device 3, described detector window 3 is positioned on atomizer flame kernel line, and excitation source 1 is positioned at around flame and has one greater than 90 with the atomizer flame direction ⁰The obtuse angle, detector window be positioned under atomizer (in face of the atomizer bottom) and with the flame kernel line on the same straight line, this kind is set to preferably, because the remolding sensitivity of measurement this moment is better.

Claims

1. two pass or multiple tracks level are observed atomic fluorescence spectrometer, comprise atomizer (2), excitation source (1) and detecting device (3), it is characterized in that described detector window (3) is positioned on atomizer flame kernel line, and excitation source (1) is positioned at or certain angle (δ) is arranged vertical with flame direction around flame.

2. two pass according to claim 1 or multiple tracks level observation atomic fluorescence spectrometer, is characterized in that excitation source and flame kernel wire clamp angle are 0 at δ ⁰﹤ δ ﹤ 180 ⁰