TVOC - Revisited,Environment International

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TVOC - Revisited
Environment International ( IF 10.3 ) Pub Date : 2022-07-28 , DOI: 10.1016/j.envint.2022.107440
Tunga Salthammer ₁

Affiliation

Background

TVOC (total volatile organic compounds) has been used as a sum parameter in indoor air sciences for over 40 years. In the beginning, individual VOC concentrations determined by gas chromatography were simply added together. However, several methods for calculating TVOC have become established over time.

Methods

To understand the manifold definitions of TVOC, one must trace the history of indoor air sciences and analytical chemistry. Therefore, in this work, the original approaches of TVOC are searched and explained. A detailed description of the measurement methods is followed by a critical evaluation of the various TVOC values and their possible applications. The aim is to give the reader a deeper understanding of TVOC in order to use this parameter correctly and to be able to better assess published results. In addition, related sum values such as TSVOC and TVVOC are also addressed.

Results

A milestone was the analytical definition of VOCs and TVOC in 1997. A list of VOCs that should at least be considered when calculating TVOC was also provided. This list represented the status at that time, is no longer up-to-date and is being updated by a European working group as part of a harmonization process. However, there is still confusion about the exact definition and reasonable application of TVOC. The signals of other sum parameters, measured with photoacoustics, flame ionization, photoionization or electrochemical sensors, are also often given under the term TVOC.

Conclusions

It was recognized early that TVOC is not a toxicologically based parameter and is therefore only suitable for a limited number of screening purposes. Consequently, TVOC cannot be used in connection with health-related and odor-related issues. Nevertheless, such references are repeatedly made, which has led to controversial scientific discussions and even court decisions in Germany about the correct and improper use of TVOC.

中文翻译：

TVOC - 重新审视

背景

40 多年来，TVOC（总挥发性有机化合物）一直被用作室内空气科学的总和参数。一开始，通过气相色谱法测定的单个 VOC 浓度只是简单地加在一起。然而，随着时间的推移，已经建立了几种计算 TVOC 的方法。

方法

要了解 TVOC 的多种定义，必须追溯室内空气科学和分析化学的历史。因此，在这项工作中，对 TVOC 的原始方法进行了搜索和解释。测量方法的详细描述之后是对各种 TVOC 值及其可能应用的严格评估。目的是让读者更深入地了解 TVOC，以便正确使用此参数并能够更好地评估已发布的结果。此外，还解决了相关的总和值，例如 TSVOC 和 TVVOC。

结果

一个里程碑是 1997 年对 VOC 和 TVOC 的分析定义。还提供了在计算 TVOC 时至少应考虑的 VOC 清单。该列表代表当时的状态，不再是最新的，并且正在由欧洲工作组作为协调过程的一部分进行更新。但是，对于 TVOC 的确切定义和合理应用仍然存在混淆。使用光声、火焰离子化、光电离或电化学传感器测量的其他总和参数的信号也经常在术语 TVOC 下给出。