Metal porphyrin langmuir blodgett film optical fiber gas sensor

A gas sensor and metalloporphyrin technology, which is used in instruments, scientific instruments, material analysis by optical means, etc., can solve the problems of detection accuracy affecting the promotion and application of sensors, poor selective recognition ability, and insufficient sensitivity. Selectivity of sensitive substances, precise thickness control, good film formation uniformity

Inactive Publication Date: 2007-10-24
CHONGQING UNIV
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AI Technical Summary

Problems solved by technology

The biggest feature of this type of fiber optic gas sensor is that it adopts a single-input-single-out optical path transmission form, and there are some sensors that use a single-input and multiple-out optical structure, but the multi-bundle output optical fibers used to detect the target substance are still A certain single information of a substance, whether it is an incident signal or an outgoing signal, can only represent a specific sensitive characteristic of a substance
Such a fiber optic gas sensor can only identify one substance or a class of s

Method used

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  • Metal porphyrin langmuir blodgett film optical fiber gas sensor
  • Metal porphyrin langmuir blodgett film optical fiber gas sensor

Examples

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Embodiment 1

[0026] As shown in Figure 1, a metalloporphyrin Langmuir-Brodite membrane optical fiber gas sensor mainly includes 4 groups of double-arm optical fibers, 4 reaction chambers, and a metalloporphyrin LB membrane array plate. The metalloporphyrin LB film array plate consists of a metalloporphyrin LB film array 6 , a substrate 7 and a mirror 8 . The optical fiber is a general optical fiber, and the incident optical fiber 1 and the outgoing optical fiber 2 have the same hole diameter. Each group of double-armed optical fibers is composed of an incident optical fiber 1, an outgoing optical fiber 2 and an optical fiber probe 3. The other end of the optical fiber probe 3 is left The incident and outgoing fiber optic heads are fixed in the fiber optic probe at the same angle and symmetrical to each other, and the optical path direction of the remaining part of the incident and outgoing fiber optic heads should point to the corresponding metal porphyrin of the group of double-armed fiber...

Embodiment 2

[0028] A metalloporphyrin Langmuir-Brodite membrane optical fiber gas sensor mainly includes 2 groups of double-armed optical fibers, 4 reaction chambers, and a metalloporphyrin LB membrane array plate. The metalloporphyrin LB film array plate consists of a metalloporphyrin LB film array 6 , a substrate 7 and a mirror 8 . The optical fiber is a general optical fiber, and the incident optical fiber 1 and the outgoing optical fiber 2 have the same hole diameter. Each group of double-armed optical fibers is composed of an incident optical fiber 1, an outgoing optical fiber 2 and an optical fiber probe 3. The other end of the optical fiber probe 3 is left The incident and outgoing fiber optic heads are fixed in the fiber optic probe at the same angle and symmetrical to each other, and the optical path direction of the remaining part of the incident and outgoing fiber optic heads should point to the corresponding metal porphyrin of the group of double-armed fibers. The central poin...

Embodiment 3

[0030] A metalloporphyrin Langmuir-Brodite membrane optical fiber gas sensor mainly includes 6 groups of dual-arm optical fibers, 4 reaction chambers, and a metalloporphyrin LB membrane array plate. The metalloporphyrin LB film array plate consists of a metalloporphyrin LB film array 6 , a substrate 7 and a mirror 8 . The optical fiber is a general optical fiber, and the incident optical fiber 1 and the outgoing optical fiber 2 have the same hole diameter. Each group of double-armed optical fibers is composed of an incident optical fiber 1, an outgoing optical fiber 2 and an optical fiber probe 3. The other end of the optical fiber probe 3 is left The incident and outgoing fiber optic heads are fixed in the fiber optic probe at the same angle and symmetrical to each other, and the optical path direction of the remaining part of the incident and outgoing fiber optic heads should point to the corresponding metal porphyrin of the group of double-armed fibers. The central point of...

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Abstract

A metal porphyrin lange mull bulogit film optical fiber gas sensor relates to a sensor for checking harmful gas device in industrial condition. The inventive sensor comprises a dual-arm optical fiber, a reaction chamber, and a metal porphyrin LB film array board. The invention is characterized in low check limit, high sensitivity, repeat application, and wide check air range, and the invention can be used to check various volatile harmful gas, more particularly check the discharge and leaked harmful gas as NO2, SO2, NO, CO, H2S and carbonyl chloride.

Description

technical field [0001] The invention belongs to the technical field of detecting harmful gas in the atmospheric environment, in particular to a sensor for detecting harmful gas in the industrial production environment. Background technique [0002] With the rapid development of industrial technology, industrial production has brought a large number of pollutants to the human living environment, mainly volatile organic compounds (VOCs) gases, such as nitrogen dioxide (NO 2 ), nitric oxide (NO), ammonia (NH 3 ), hydrogen sulfide (H 2 S), phosgene, etc. These volatile organic gases have seriously affected human's daily life environment, and constantly endanger people's physical and mental health. Among them, nitrogen dioxide is corrosive and physiologically stimulating, which will damage the development of the lungs and lead to changes in the structure of the lungs. It is one of the main factors for the formation of photochemical smog and one of the sources of acid rain. It ...

Claims

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Application Information

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IPC IPC(8): G01N21/17
Inventor 侯长军霍丹群龚恒郑小林廖海洋侯文生杨军皮喜田
Owner CHONGQING UNIV
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