相关实验视频

Updated: Jul 22, 2026

Production and Measurement of Organic Particulate Matter in a Flow Tube Reactor
13:29

Production and Measurement of Organic Particulate Matter in a Flow Tube Reactor

Published on: December 15, 2018

7.6K

在南非布隆芬泰恩的微型大气颗粒的来源分配,使用正矩阵因数分解

Deidré van der Westhuizen1, Chantelle Howlett-Downing2, Peter Molnár3

  • 1Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein, 9300, South Africa.

Environmental monitoring and assessment
|January 23, 2024
PubMed
概括

这项研究确定了南非布伦福因 (Bloemfontein) 的细颗粒物 (PM2.5) 空气污染的主要来源. 当地的污染源主要是燃烧木材,而远距离的污染源往往来自姆普马伦加省.

关键词:
空气污染 大气污染碳黑是一种碳黑.有机碳 有机碳是有机碳的组成部分.对于PM2.5来说,这是一个很好的例子.来源分配的分配方式微量元素中的微量元素.

更多相关视频

Real-time Breath Analysis by Using Secondary Nanoelectrospray Ionization Coupled to High Resolution Mass Spectrometry08:23

Real-time Breath Analysis by Using Secondary Nanoelectrospray Ionization Coupled to High Resolution Mass Spectrometry

Published on: March 9, 2018

8.9K
Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions05:45

Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions

Published on: January 7, 2019

10.7K

相关概念视频

Extraction: Partition and Distribution Coefficients01:14

Extraction: Partition and Distribution Coefficients

The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an organic...
Sampling Plans01:23

Sampling Plans

Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...