Device for detecting pork heavy metal distribution through tunable resonance laser-induced breakdown spectroscopy

A technology of laser-induced breakdown and spectral detection, which is applied in the directions of measuring devices, fluorescence/phosphorescence, and material excitation analysis. Green detection, the effect of meeting the requirements of spherical aberration and coma aberration

Inactive Publication Date: 2018-03-06
JIANGXI AGRICULTURAL UNIVERSITY
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional methods for detecting heavy metals in pork, such as atomic absorption spectrometry (AAS), are stable and highly sensitive, but the sample pretreatment process is complicated and may cause chemical secondary pollution, which does not meet the needs of green detection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for detecting pork heavy metal distribution through tunable resonance laser-induced breakdown spectroscopy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand and clear, the present invention will be further explained below in conjunction with specific drawings.

[0018] See figure 1 The device for detecting the distribution of heavy metals in pork by using tunable resonance laser-induced breakdown spectroscopy, including Nd-YAG tunable three-wavelength laser 1, pulsed laser beam 2, high reflector 3, sample focusing lens 4, plasma 5, spherical reflector 6. Two-dimensional rotating platform 7, pork sample 8, guide rail 9, slider 10, guide post 11, OPO laser beam 12, plasma collection achromatic lens group 13, plasma beam 14, optical fiber probe 15, optical fiber 16, spectrometer 17. Computer 18, fourth control cable 19, third control cable 20, OPO focusing lens 21, digital delay generator 22, OPO laser 23, second control cable 24 and first control cable 25; the Nd-YAG The tunable three-wavelength laser ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a device for detecting pork heavy metal distribution through tunable resonance laser-induced breakdown spectroscopy. According to the device, a pork sample subjected to dryingand tabletting is subjected to ablation breakdown under action of a pulsed laser beam so that plasma is produced, an OPO laser adjusts output laser wavelength to resonance excitation wavelength of theatom of an element to be detected, a position adjustment mechanism is adjusted to control movement of an OPO focusing lens three-dimensional space so that the OPO laser beam is focused to the centerof the plasma, the atom of the element to be detected absorbs the energy and produces transition so that a fluorescence spectrum is produced, a spherical mirror carries out spatial constraint on the plasma so that many plasmas as possible are focused by a plasma collection achromatic lens assembly and then collected and transmitted to a spectrometer through a fiber optic probe, the spectrometer converts the received spectral signal into an electrical signal and transmits it to a processing terminal and the processing terminal compares the detected spectrum so that fast, accurate and eco-friendly detection is realized.

Description

Technical field [0001] The invention relates to the technical field of meat quality detection, in particular to a device for detecting the distribution of heavy metals in pork by using a tunable resonance laser induced breakdown spectrum. Background technique [0002] Pork has long been the main source of meat for the entire world, especially for Chinese residents. Since 1992, my country has surpassed the United States to become the world's largest pork consumer. The huge demand for pork has given birth to the development of the pig breeding industry, but some farmers, in pursuit of profit, feed on feeds with added heavy metals to promote the rapid growth of pigs. According to the "2015 Alltech Heavy Metals Survey Report", 30% of the complete feed, premix, inorganic and organic minerals and other feed raw materials samples contain heavy metals, and the content exceeds the EU's acceptable feed safety standards . Feeding feeds with excessive heavy metals leads to great potential ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/64G01N21/6404G01N21/648G01N2021/6417
Inventor 黄林姚明印罗子奕许方豪饶刚福陈添兵杨晖刘木华陈金印林金龙何秀文周华茂
Owner JIANGXI AGRICULTURAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap