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

Applications of IR Spectroscopy: Overview01:11

Applications of IR Spectroscopy: Overview

506
The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
506
Qualitative Analysis01:10

Qualitative Analysis

230
Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
There are two main approaches to qualitative analysis:...
230
Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

733
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
733
Spectrophotometry: Introduction01:16

Spectrophotometry: Introduction

3.0K
Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...
3.0K
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

499
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...
499
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

2.5K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
2.5K

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

Spectroscopic and molecular modeling methods to investigate the interaction between psycho-stimulant modafinil and calf thymus DNA using ethidium bromide as a fluorescence probe.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2022
Same author

Exploring Allosteric Signaling in the Exit Tunnel of the Bacterial Ribosome by Molecular Dynamics Simulations and Residue Network Model.

Frontiers in molecular biosciences·2020
Same author

Multispectroscopic and Computational Investigation of ct-DNA Binding Properties with Hydroxybenzylidene Containing Tetrahydrocarbazole Derivative.

Journal of fluorescence·2018
Same author

Identification of potential allosteric communication pathways between functional sites of the bacterial ribosome by graph and elastic network models.

Biochimica et biophysica acta. General subjects·2017
Same author

Investigation of binding properties of two ethidium derivatives with serum albumins: spectral and computational approach.

Journal of biomolecular structure & dynamics·2017
Same author

Distance-dependent intrinsic fluorescence of proteins on aluminum nanostructures.

Proceedings of SPIE--the International Society for Optical Engineering·2013

相关实验视频

Updated: Jun 11, 2025

A Two-Step Pyrolysis-Gas Chromatography Method with Mass Spectrometric Detection for Identification of Tattoo Ink Ingredients and Counterfeit Products
08:07

A Two-Step Pyrolysis-Gas Chromatography Method with Mass Spectrometric Detection for Identification of Tattoo Ink Ingredients and Counterfeit Products

Published on: May 22, 2019

11.0K

用于墨水分析的光谱技术和化学测量: 文档分析应用程序

Ummugulsum Mirzanli1, Pelin Guzel2, Nuriye Akbay3

  • 1Division of Forensic Sciences, Institute of Postgraduate Education, Istanbul Medeniyet University, 34700 Istanbul, Turkey.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|October 2, 2024
PubMed
概括

本研究引入了一种混合光谱和化学测量方法,用于使用圆珠笔墨水检测伪造文件. 该方法利用UV-Vis和FTIR-ATR光谱学,有效地识别油墨品牌,并检测伪造品,即使样本大小有限.

关键词:
化学测量 化学测量 化学测量法医科学 法医科学 法医科学层次化的集群分析分析.墨水分析分析 墨水分析主要组件分析的主要组件分析.

更多相关视频

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks
10:31

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks

Published on: May 8, 2015

13.7K
Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography
10:14

Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography

Published on: September 2, 2020

4.9K

相关实验视频

Last Updated: Jun 11, 2025

A Two-Step Pyrolysis-Gas Chromatography Method with Mass Spectrometric Detection for Identification of Tattoo Ink Ingredients and Counterfeit Products
08:07

A Two-Step Pyrolysis-Gas Chromatography Method with Mass Spectrometric Detection for Identification of Tattoo Ink Ingredients and Counterfeit Products

Published on: May 22, 2019

11.0K
Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks
10:31

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks

Published on: May 8, 2015

13.7K
Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography
10:14

Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography

Published on: September 2, 2020

4.9K

科学领域:

  • 法医科学 法医科学 法医科学
  • 分析化学 分析化学
  • 频谱学是一种光谱学.

背景情况:

  • 文件伪造是法医调查中的一个重大挑战.
  • 需要可靠的方法来验证文件的真实性,并识别假冒物品.
  • 光谱技术为材料表征提供非破坏性分析.

研究的目的:

  • 开发和验证用于检测伪造文件的综合光谱和化学测量方法.
  • 评估UV-Vis和FTIR-ATR光谱学用于圆珠笔墨水分析的区分能力.
  • 在现实世界法医场景中展示该方法的应用,包括有限的样本分析.

主要方法:

  • 应用UV-Vis和FTIR-ATR光谱学与主要成分分析 (PCA) 结合使用.
  • 分析了来自土耳其三个品牌的11个球笔墨水样本 (黑色,蓝色,红色).
  • 开发一种干样品制备技术,以提高小型样品的FTIR-ATR灵敏度.

主要成果:

  • 对于识别油墨品牌,FTIR-ATR光谱显示出比UV-Vis更高的辨别能力.
  • 紫外线-Vis光谱学有效区分基于颜色的油墨.
  • 该方法成功地分类了圆珠墨水,并识别了伪造的旧日期的检查样本.
  • FTIR-ATR分析证实,从最小的样本数量中检测出伪造品.

结论:

  • 拟议的方法,将UV-Vis和FTIR-ATR光谱与化学测量技术相结合,是对分类和识别圆珠墨水的有效方法.
  • 该技术对于法医应用非常有价值,特别是在从有限的样本数量中检测文件伪造时.
  • 这种全面的方法即使在资源有限的实验室中,也适用于具有基本光谱能力的实验室.