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No-reference SPR sensor for detecting benzopyrene

A technology of benzopyrene and sensors, applied in the field of non-reference SPR sensors, which can solve the problems of being unsuitable for rapid on-site detection, bulky instruments, and high detection costs, and achieve low test costs, high measurement accuracy, and good repeatability.

Active Publication Date: 2016-11-23
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

These existing detection methods have disadvantages, these disadvantages include: the instrument is bulky, expensive, complicated to operate, inconvenient to carry, requires sampling and analysis, not suitable for on-site rapid detection, high detection cost, requires pre-treatment of samples, and long detection time

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  • No-reference SPR sensor for detecting benzopyrene
  • No-reference SPR sensor for detecting benzopyrene
  • No-reference SPR sensor for detecting benzopyrene

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Embodiment Construction

[0049] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. And in the drawings, the shapes or thicknesses of the embodiments may be enlarged, and marked for simplicity or convenience. Furthermore, elements or implementations not shown or described in the drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints.

[0050] In an exemplary embodiment of the present invention, a reference-free SPR sensor for the detection of benzopyrene is proposed, as figure 1 As shown, the sensor mainly includes a prism 1 , an SPR chip 2 , a light source 3 , a digital camera 4 , a microscope tube 41 ...

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Abstract

The invention discloses a no-reference SPR sensor for detecting benzopyrene. The sensor mainly consists of a prism, an SPR chip, a sample cell, a light source, a digital camera and a signal processing module, wherein the SPR chip is covered with a layer of hydrophobic film of which the thickness is greater than the penetration depth of an evanescent field and is used for extracting benzopyrene in a to-be-detected water sample and eliminating response of the SPR sensor to the reflective index of the to-be-detected water sample. The sensor obtains the benzopyrene concentration information in the to-be-detected water sample by recording the SPR color image and extracting the average hue of the image as sensitivity. The sensor disclosed by the invention does not require pretreatment of the to-be-detected water sample and realizes strong anti-jamming ability and short detection time; without a reference sample, the sensor can directly analyze the to-be-detected water sample, and the operation steps are simple; and moreover, with small volume and light weight, the sensor is convenient to carry and suitable for fast field detection of benzopyrene.

Description

technical field [0001] The invention relates to optical detection technology and water environment monitoring technology, in particular, the invention is a reference-free SPR sensor for detecting benzopyrene. Background technique [0002] Benzo[a]pyrene (BaP) is a polycyclic aromatic hydrocarbon composed of five benzene rings. It is a typical persistent organic pollutant (POPs), which is mainly produced in processes such as fuel combustion and high temperature oil refining. In food, water, air, soil and other environments. Benzopyrene has strong carcinogenicity, teratogenicity and mutagenicity, and an extremely small amount (nanogram level) of benzopyrene will cause serious harm to the human body, which has attracted great attention from health organizations and environmental organizations around the world. In my country's surface water quality standards and sewage discharge standards, the limits for benzopyrene are 2.8ng / L and 3ng / L, respectively. [0003] The research an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/552
CPCG01N21/554
Inventor 祁志美范智博逯丹凤龚晓庆王丽
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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