氧化剂容器清洁,为采样和分析空气中的乙烯氧化物和其他挥发性有机物做准备
Jason S Herrington1, Jason Hoisington1, Brian Jones1
1Restek Corporation, 110 Benner Circle, Bellefonte, Pennsylvania 16828-8433, United States.
ACS omega
|July 7, 2025
概括
一种新的过氧化清洁方法可显著减少空气采样容器中的乙烯氧化物 (EtO) 和其他挥发性有机化合物 (VOC). 这一进步解决了空气监测中长期存在的污染问题,提高了数据准确性.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 空气质量监测 空气质量监测
背景情况:
- 空气采样容器被挥发性有机化合物 (VOC),特别是乙烯氧化物 (EtO) 污染是一个持续的问题.
- 现有的清洁方法不足,导致空气测量不准确,原因是随着时间的推移而增长的分析物.
- 假设污染是由于容器内的残留物氧化降解而造成的.
研究的目的:
- 引入和评估一种使用过氧化 (H2O2) 来从空气采样容器中去除VOC的新型清洗方法.
- 评估H2O2方法在消除EtO和其他VOC,包括其前体方面的有效性.
主要方法:
- 应用基于过氧化 (H2O2) 的清洁程序,以污染的容器.
- 使用美国环保署方法TO-15和草案方法327对容器清洁度和分析物回收的评估.
- 进行了零空气和已知标准验证,以评估方法有效性和潜在偏差.
主要成果:
- 通过H2O2方法,严重污染的容器中的平均EtO度从7.50ppbv降至47ppbv.
- 在20个轻度污染的中,有19个在H2O2处理后显示出不可检测的EtO水平.
- 用H2O2方法处理的容器通过了为期7天的已知标准验证,表明没有显著的偏差.
结论:
- 过氧化是一种有效的氧化剂,用于清洁空气采样容器,去除EtO和其他VOCs.
- 与传统方法相比,拟议的方法显著提高了清洁度.
- 该技术为提高空气质量监测数据的准确性和可靠性提供了可行的解决方案.
相关概念视频
Methods of Sterilization II: Chemical Methods
6.9K
In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
6.9K
Autoxidation of Ethers to Peroxides and Hydroperoxides
8.2K
Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
8.2K
Sample Preparation for Analysis: Overview
347
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...
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
347
Cleaning, Sterilization, and Disinfection
7.4K
Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease.
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
7.4K
Radical Autoxidation
2.3K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
2.3K


