在室内办公室中处理新兴关注的新化学品 (CECs)
Kai Song1, Xinping Yang2, Yunjing Wang2
1State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Vehicle Emission Control Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Key Joint Laboratory of Environmental Simulation and Pollution Control, International Joint Laboratory for Regional Pollution Control, Ministry of Education (IJRC), College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China.
这项研究确定了室内空气中四种新兴关注的化学物质 (CEC),包括中间挥发性有机化合物 (IVOC). 了解这些室内污染物对于评估健康风险至关重要.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 室内空气质量 室内空气质量
背景情况:
- 室内空气质量是动态的,污染物因地点和时间而异.
- 室内接触危险有机化合物与不良健康结果有关.
- 识别新的室内有机污染物对于全面的风险评估至关重要.
研究的目的:
- 开发和应用一种在室内环境中选和识别新兴关注化学品 (CEC) 的方法.
- 量化已识别的有机化合物,并评估它们的污染潜力.
- 调查新发现的CEC的来源.
主要方法:
- 使用Tenax TA管在办公室 (样本) 和底盘动力计室 (背景) 设置中采样有机气体.
- 使用热溶解综合二维气体染色学四极质谱法 (TD-GC×GC-qMS) 分析化合物.
- 实施CEC选的三步管道:非目标扫描,统计分析和财产估计.
主要成果:
- 量化了469种有机化合物,选了四种新型CEC:薄荷基,异基,β-基和 (5α) - 安德罗斯坦.
- 已识别的CEC主要是中间挥发性有机化合物 (IVOC).
- 薄荷基和基可能来自挥发性化学产品 (VCPs),而 (5α) -androstane可能是人类排放的.
结论:
- 该研究首次报告了四个新的CEC的发生和污染潜力.
- 非目标扫描和IVOC测量对于完全了解室内有机污染物至关重要.
- 这些发现强调了持续监测和识别新出现的室内空气污染物的重要性.
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