一种缓冲LC-MS方法,用于解析和定量阿尔比佛林和佩奥尼佛林
Alina Gazizova1, Ela Hümay Altincubuk1, Christina Oppermann1
1Industrial and Analytical Chemistry, Department of Chemistry, University of Rostock, Rostock, Germany.
Biomedical chromatography : BMC
|January 19, 2026
概括
一种新的LC-MS方法通过防止人工物峰值,准确量化了来自Paeoniae Radix Alba的阿尔比佛林和帕欧尼佛林. 这有助于改善传统中医研究的分析.
科学领域:
- 药理学 药理学是指药理学的学科.
- 分析化学 分析化学
- 传统中国医药 传统中国医药
背景情况:
- 阿尔比弗洛林和帕欧尼弗洛林是Paeoniae Radix Alba中的关键生物活性异构体.
- 准确的量化对于理解它们的药理作用至关重要.
- 使用酸的现有LC-MS方法产生了人工物峰值,阻碍了分析.
研究的目的:
- 开发和验证一种新的LC-MS方法,用于准确和同时量化阿尔比佛林和帕欧尼佛林.
- 为了克服标准方法中甲酸引起的工件峰值形成的问题.
- 确保对涉及Paeoniae Radix Alba的药理学研究进行可靠的分析.
主要方法:
- 使用Kinetex的-基柱与渐变化.
- 在水和甲醇中使用缓冲移动相 (10mM乙酸和酸,pH4.4).
- 验证了该方法的线性,精度,准确性和灵敏度.
主要成果:
- 开发的方法成功地分离了佩奥尼佛林和阿尔比佛林,消除了工件峰值.
- 在1-50μg/mL的度范围内表现出良好的线性.
- 成功地应用于分析Paeoniae Radix Alba提取物.
结论:
- 新的LC-MS方法允许精确和同时量化阿尔比弗洛林和帕欧尼弗洛林.
- 消除文物峰值可以提高分析可靠性.
- 该方法适用于对Paeoniae Radix Alba及其相关化合物的药理学研究.
相关概念视频
Buffers
172.3K
A solution containing appreciable amounts of a weak conjugate acid-base pair is called a buffer solution, or a buffer. Buffer solutions resist a change in pH when small amounts of a strong acid or a strong base are added. A solution of acetic acid and sodium acetate is an example of a buffer that consists of a weak acid and its salt: CH3COOH (aq) + CH3COONa (aq). An example of a buffer that consists of a weak base and its salt is a solution of ammonia and ammonium chloride: NH3 (aq) + NH4Cl...
172.3K
Buffers
156.8K
Buffers
When an Arrhenius acid (HA) is added to water, it dissociates into its conjugate base (A-) and a hydrogen cation (H+).
HA + H2O → H+(aq) + A-(aq)
The amount of hydrogen ions present in the solution determines the acidity of the solution, where more hydrogen ions indicate a lower or more acidic pH. Similarly, when a strong Arrhenius base (BOH) is added to water, it dissociates into its conjugate acid (B+) and a hydroxide ion (OH-).
BOH + H2O → B+(aq) + OH-(aq)
Generally, the addition...
When an Arrhenius acid (HA) is added to water, it dissociates into its conjugate base (A-) and a hydrogen cation (H+).
HA + H2O → H+(aq) + A-(aq)
The amount of hydrogen ions present in the solution determines the acidity of the solution, where more hydrogen ions indicate a lower or more acidic pH. Similarly, when a strong Arrhenius base (BOH) is added to water, it dissociates into its conjugate acid (B+) and a hydroxide ion (OH-).
BOH + H2O → B+(aq) + OH-(aq)
Generally, the addition...
156.8K
Buffers
27.7K
Source: Smaa Koraym at Johns Hopkins University, MD, USA
27.7K
Buffers
9.5K
Source: Smaa Koraym at Johns Hopkins University, MD, USA
9.5K
Buffers: Buffer Capacity
2.2K
Buffer capacity is the quantitative measure of a buffer to resist the change in pH. As shown in the following equation, the buffer capacity, denoted by 'beta', is expressed as the number of moles of acid or base needed to change the pH of a one-liter buffer solution by 1 unit. Here, Ca and Cb indicate the number of moles of acid and base, respectively. Note that dpH represents the change in pH.
In the graph, pH is plotted as a function of the number of moles of base (Cb) added to a weak...
In the graph, pH is plotted as a function of the number of moles of base (Cb) added to a weak...
2.2K
Buffer Effectiveness
54.9K
Buffer solutions do not have an unlimited capacity to keep the pH relatively constant . Instead, the ability of a buffer solution to resist changes in pH relies on the presence of appreciable amounts of its conjugate weak acid-base pair. When enough strong acid or base is added to substantially lower the concentration of either member of the buffer pair, the buffering action within the solution is compromised.
The buffer capacity is the amount of acid or base that can be added to a given volume...
The buffer capacity is the amount of acid or base that can be added to a given volume...
54.9K
