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Miniature vapor generation sampling system and sampling method for portable atomic fluorescence

A technology of atomic fluorescence and vapor generation, applied in fluorescence/phosphorescence, material excitation analysis, instruments, etc., can solve the problems of low degree of automation, large volume, poor sampling accuracy, etc., and achieve control system power consumption, high degree of automation, The effect of ensuring sampling accuracy

Inactive Publication Date: 2015-06-24
RUILI ANALYTICAL INSTR CO LTD BEIJING
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Problems solved by technology

[0005] The main purpose of the present invention is to provide a portable atomic fluorescence micro vapor generation sampling system and its sampling method to solve the problems of large volume, high power consumption, poor sampling accuracy, and low degree of automation in the prior art. question

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  • Miniature vapor generation sampling system and sampling method for portable atomic fluorescence

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Embodiment Construction

[0021] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0022] See figure 1 As shown, the present invention provides a portable atomic fluorescence micro-vapor generation sampling system, which has a four-way module 8. The first port D of the four-way module 8 is connected to the sample / carrier tube 1, and the second One port E is connected to carrier gas (such as Ar), and the third port F is connected to KBH 4 Tube 11, sample from the first port D, KBH from the third port F 4 It is mixed together with the carrier gas entering from the second port E, and discharged from the fourth port G of the four-way module 8 to the gas-liquid separator through the reaction tube 7 for subsequent analysis and detection work, in which:

[0023] The sample / carrier tube 1 is connected to the first port A of the two-position three-way solenoid valve 3 through the sample storage ring 2...

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Abstract

The invention relates to miniature vapor generation sampling system and sampling method for portable atomic fluorescence. The sampling system comprises a four-way module, wherein a first port of the four-way module is connected with a sample / current-carrying pipe through a first liquid inlet pump; a second port of the four-way module is connected with a carrier gas; a third port of the four-way module is connected with a KBH4 pipe through a second liquid inlet pump; a fourth port of the four-way module is connected with a gas-liquid separator through a reaction pipe; the sample / current-carrying pipe is communicated with a first port of a two-bit three-way electromagnetic valve through a sample storage ring; a second port of the electromagnetic valve is communicated with a miniature plunger pump; a third port of the electromagnetic valve is communicated with the first liquid inlet pump. According to the sampling system and the sampling method, high-accuracy sampling and small-space occupation are realized with the low-power-consumption miniature plunger pump, and a sample and KBH4 are respectively extracted by virtue of the low-power-consumption liquid inlet pumps to realize steam generation reaction, so that the sampling accuracy is ensured, and the power consumption and the space occupation of the system are effectively controlled; and the sampling system and the sampling method are especially suitable for field testing instruments of portable atomic fluorescence and the like with relatively high requirements on power consumption, size and weight.

Description

Technical field [0001] The invention relates to a vapor generation and sampling system and a sampling method, in particular to a miniature vapor generation and sampling system, which is suitable for portable atomic fluorescence on-site rapid detection of trace and ultra-trace amounts of arsenic, cadmium, lead, mercury, selenium, etc. element. Background technique [0002] In recent years, arsenic (As), cadmium (Cd), lead (Pb), mercury (Hg) and other heavy metal pollution emergencies have emerged one after another, which has seriously affected the production and life of the masses. At present, the detection of this type of pollutants mainly adopts colorimetric and electrochemical methods for detection, which has the disadvantages of low detection sensitivity, poor anti-interference ability and poor selectivity. It is very important in the detection of heavy metal emergency pollution. limitation. The portable atomic fluorescence spectrometer has the advantages of low operating co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64G01N35/10
Inventor 梁敬董芳陈璐王庆侯爱霞杨名名张锦茂
Owner RUILI ANALYTICAL INSTR CO LTD BEIJING
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