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相关概念视频

Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

301
Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
301
Sample Preparation for Analysis: Overview01:21

Sample Preparation for Analysis: Overview

273
Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
273
Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

436
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
436
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

213
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...
213
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

546
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
546
Sampling Plans01:23

Sampling Plans

220
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...
220

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采样袋式排放室用于测量来自家用材料的挥发性有机化合物,使用固相提取型采集装置.

Ikuo Ueta1, Eriko Kato2, Yoshihiro Saito3

  • 1Department of Applied Chemistry, University of Yamanashi, 4-3-11 Takeda, Kofu, 400-8511, Japan. iueta@yamanashi.ac.jp.

Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
|May 30, 2023
PubMed
概括

一种新的,负担得起的方法简化了家用材料挥发性有机化合物 (VOC) 排放测试. 该技术使用固体相提取装置和气体采样袋来轻松选挥发性有机化合物.

关键词:
气体染色学 是一种气体染色学.这是SPE类型的采集装置.患病建筑综合征 (sick building syndrome) 是一种疾病.挥发性有机化合物排放量排放量

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科学领域:

  • 环境化学环境化学
  • 分析化学 分析化学

背景情况:

  • 易挥发性有机化合物 (VOC) 由家用材料排放,影响室内空气质量.
  • 准确和可访问的方法来确定VOC排放对于材料评估至关重要.

研究的目的:

  • 开发一种简单,具有成本效益的选方法,用于确定家用材料的VOC排放.
  • 建立一个实用的分析技术来评估从固体材料中释放的VOC.

主要方法:

  • 使用固相提取 (SPE) 型采集装置和一个20升气体采样袋.
  • 开发了用于VOC收集的完整和传统流量采样模式.
  • 用乙提取挥发性有机物,并使用气色谱-质谱法 (GC-MS) 进行分析.

主要成果:

  • 开发的方法成功确定了家用材料的VOC排放量.
  • 该技术避免了需要昂贵的不钢室和热吸附系统.
  • 该方法被证明是负担得起的,适合选VOC排放.

结论:

  • 成功开发了一种简单且经济的分析方法,用于对家用材料的VOC排放进行查.
  • 基于SPE的方法为评估固体材料中的VOC提供了切实可行的替代方案.
  • 这种方法使得在各种环境中对VOC排放的评估更容易,更容易获得.