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Updated: Jun 16, 2026

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参考标准的综合和优化UPLC-ESI-MS/MS方法用于定量PM2.5中的有机硫酸盐

Zhichao Dong1, Subba Rao Devineni1,2, Xiaoli Fu1

  • 1Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China.

Rapid communications in mass spectrometry : RCM
|December 8, 2025
PubMed
概括

一种新方法精确地测量了PM2.5空气污染中的有机硫酸盐 (OSs). 这一进步有助于理解OS对气候和健康的影响,支持改善空气质量的努力.

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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...