Related Experiment Video

Updated: Apr 19, 2026

An In Vitro Dissolution Determination of Multi-Index Components in Tibetan Medicine Rhodiola Granules
05:59

An In Vitro Dissolution Determination of Multi-Index Components in Tibetan Medicine Rhodiola Granules

Published on: November 4, 2022

2.3K

[Analysis of dissolution characteristics and content of metal elements in Scutellaria baicalensis]

Hua Li, Jing Liu, Mei-hong Fu

    Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
    |December 6, 2014
    PubMed

    More Related Videos

    Preparation of Gynura bicolor DC samples for High-Resolution Tandem Mass Spectrometry07:16

    Preparation of Gynura bicolor DC samples for High-Resolution Tandem Mass Spectrometry

    Published on: February 2, 2024

    1.2K
    Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions11:50

    Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

    Published on: June 13, 2015

    13.0K

    Related Concept Videos

    Qualitative Analysis03:46

    Qualitative Analysis

    For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
    For instance, group IV...
    30.2K
    Precipitation and Co-precipitation01:17

    Precipitation and Co-precipitation

    Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
    5.8K
    Drug Dissolution: Requirements and Profile Comparison01:14

    Drug Dissolution: Requirements and Profile Comparison

    The acceptance criteria for dissolution profile data are anchored in Q values, representing the percentage of drug dissolved within a specified period. This assessment unfolds in three stages:First Stage: The test passes if all six drug dosage units are equal to or greater than Q plus 5%; otherwise, the sample proceeds to the second stage.Second Stage: The average of twelve units must be equal to or greater than Q, with no unit falling below Q - 15% to pass; if not, it progresses to the final...
    459
    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...
    1.9K
    Extraction: Advanced Methods00:56

    Extraction: Advanced Methods

    Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
    1.3K