Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

446
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
446
Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

498
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
 Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
498
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

805
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
805

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Smartphone-assisted plasmonic biosensors for rapid on-site detection of foodborne pathogens and allergens.

Talanta·2025
Same author

Fluorinated apelin-13 mediates neuroprotective effects in multiple sclerosis models.

Neurobiology of disease·2024
Same author

Implication of the Transmembrane Domain in the Interleukin 10 Receptor Platform Oligomerisation.

Cells·2023
Same author

Wide-Field-of-View Multispectral Camera Design for Continuous Turfgrass Monitoring.

Sensors (Basel, Switzerland)·2023
Same author

Toward a Combination of Biomarkers for Molecular Characterization of Multiple Sclerosis.

International journal of molecular sciences·2022
Same author

Freeform Wide Field-of-View Spaceborne Imaging Telescope: From Design to Demonstrator.

Sensors (Basel, Switzerland)·2022

相关实验视频

Updated: Jul 25, 2025

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.
09:21

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.

Published on: February 15, 2019

10.6K

手持式光光谱仪可用于在玉米中检测敏感的偏毒素.

Lien Smeesters1, Thomas Kuntzel2, Hugo Thienpont1

  • 1Department of Applied Physics and Photonics, Brussels Photonics (B-PHOT), Vrije Universiteit Brussel and Flanders Make, Pleinlaan 2, 1050 Brussels, Belgium.

Toxins
|June 27, 2023
PubMed
概括

一个新的手持式光传感器提供了一种非破坏性的方法来检测食品中的亚拉托克辛. 这项技术通过在现场对这些有害致癌物质进行快速分析,提高了食品安全.

关键词:
非洲毒素 (aflatoxin) 是一种毒素.光是一种光.食品安全 食品安全手持式光谱仪是一种手持式光谱仪.玉米玉米玉米是一种有光学传感器的感应器.这是光谱学.

更多相关视频

Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays
10:01

Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays

Published on: April 23, 2012

18.2K
Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer
08:27

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

Published on: October 1, 2016

9.1K

相关实验视频

Last Updated: Jul 25, 2025

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.
09:21

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.

Published on: February 15, 2019

10.6K
Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays
10:01

Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays

Published on: April 23, 2012

18.2K
Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer
08:27

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

Published on: October 1, 2016

9.1K

科学领域:

  • 食品科学 食品科学 食品科学
  • 分析化学 分析化学
  • 频谱学是一种光谱学.

背景情况:

  • 非洲毒素是显著的致癌物质,对食品和料安全构成风险.
  • 目前的青毒素检测方法具有破坏性,不适合实时,局部分析.
  • 在农业食品行业中,需要快速,非破坏性技术来检测青毒素.

研究的目的:

  • 开发一种非破坏性的光学传感技术,用于使用光谱学检测青素.
  • 创建一个紧的,手持的光传感器单元,用于现场分析.
  • 评估食品安全开发的传感器单元的灵敏度和适用性.

主要方法:

  • 开发一个紧的光传感器单元,集成紫外线激发和光检测.
  • 与研究级光装置对比新型传感单元的比较.
  • 测试传感器检测和分类玉米样本中 aflatoxin度的能力.

主要成果:

  • 传感器显示出高灵敏度,通过光谱分离低度亚拉托克辛 (6.6μg/kg和11.6μg/kg) 的玉米粉样本.
  • 自然污染的玉米成功地被分类为广泛的亚拉托克辛水平 (0μg/kg,0.6μg/kg和1647.8μg/kg).
  • 开发的方法显示出良好的灵敏度和实际应用的潜力.

结论:

  • 新型紧型光传感装置提供了一种敏感且无损的方法来检测青毒素.
  • 这项技术具有很高的潜力,可以在整个食品链中集成到食品安全协议中.
  • 开发的传感方法有助于通过快速,现场的亚毒素分析来提高食品安全.