関連する実験動画

Updated: Jul 12, 2026

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
10:22

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Published on: September 7, 2019

アレンデ隕石の空間解析による有機分析

R Zenobi, J M Philippoz, R N Zare

    Science (New York, N.Y.)
    |November 24, 1989
    PubMed
    まとめ

    ポリサイクル芳香炭化水素 (PAH) は,レーザー質量スペクトロメトリーを使用してアレンデ隕石で分析されました. PAHはコンドルールではなく,細粒子のマトリックスに濃縮されており,有機ポリマーとの関連性を示唆しています.

    さらに関連する動画

    Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures09:38

    Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures

    Published on: January 7, 2019

    Atom Probe Tomography Analysis of Exsolved Mineral Phases08:14

    Atom Probe Tomography Analysis of Exsolved Mineral Phases

    Published on: October 25, 2019

    関連する概念動画

    Gravimetry: Inorganic And Organic Precipitating Agents00:49

    Gravimetry: Inorganic And Organic Precipitating Agents

    In gravimetry, the precipitant is chosen carefully to obtain a pure solid that can be easily filtered. Common inorganic precipitants can be used to determine several cations and anions. In some cases, the formation of the same precipitate can be used to determine the cation and the anion. For example, the reaction of barium and chromate ions to give barium chromate is used to determine both barium and chromate. However, precipitates such as hydroxides, oxalates, and metal ammonium phosphates...
    Sample Preparation for Analysis: Advanced Techniques01:08

    Sample Preparation for Analysis: Advanced Techniques

    Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
    Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
    X-ray Diffraction of Biological Samples01:10

    X-ray Diffraction of Biological Samples

    X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
    According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...
    Atomic Emission Spectroscopy: Lab01:29

    Atomic Emission Spectroscopy: Lab

    AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
    Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals01:17

    Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

    Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...
    Spectroscopy of Carboxylic Acid Derivatives01:26

    Spectroscopy of Carboxylic Acid Derivatives

    Infrared spectroscopy is primarily used to determine the types of bonds and functional groups. In carboxylic acid derivatives, a typical carbonyl bond absorption is observed around 1650–1850 cm−1. For esters, the absorption is recorded at around 1740 cm−1, while acid halides show the absorption at about 1800 cm−1. Another acid derivative, the acid anhydrides, exhibit two carbonyl absorption around 1760 cm−1 and 1820 cm−1, arising from the symmetrical and unsymmetrical carbonyl vibration.
    In the...