State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China.
Environ Res. 2022 Jun;209:112879. doi: 10.1016/j.envres.2022.112879. Epub 2022 Feb 5.
The impact of odorous gases emitted from refuse transfer stations has always been a concern raised by the surrounding residents. The emitted volatile organic compounds (VOCs) and odors were investigated in a rural solid waste transfer station (RSWTS) located in Southwest China. A total of 70 VOCs were identified and quantified. The total VOCs (TVOCs) concentrations varied from 848.38 to 31193.24 μg/m. Inorganic odor and greenhouse gases concentrations ranged from 39.11 to 470.14 μg/m and 1.03-525.42 μg/m, respectively. Oxygenated compounds contributed the most (58.25%) to the VOCs. Among the oxygenated compounds, ketones, esters, and ethers were the dominant categories, accounting for 67.5%, 12.70%, and 11.85%, respectively. The key odorants included propionaldehyde, hexanaldehyde, propionic acid, acetaldehyde, and disopropyl ether. N-nitrosodiethylamine, acrylonitrile, and 1,3-Butadiene were the three main carcinogens that pose considerable risk to human health. Allyl chloride was the most non-carcinogenic pathogen among the VOCs detected in RSWTS. With diffusion in the downwind direction, the concentration of VOCs decreased gradually, and their risks weakened accordingly. At the sampling site of RSWTS-10, located 100 m away from RSWTS, acrylonitrile and 1,3-Butadiene still presented an unacceptable carcinogenic risk to human health. This study provides new data for assessing the emission characteristics, olfactory effects, and health risks of trace VOCs, especially those released from RSWTS.
垃圾转运站排放的恶臭气体一直是周围居民关注的问题。本研究调查了位于中国西南部的一个农村固体废物转运站（RSWTS）中排放的挥发性有机化合物（VOCs）和气味。共鉴定和定量了 70 种 VOCs。总挥发性有机物（TVOCs）浓度范围为 848.38 至 31193.24μg/m3。无机气味和温室气体浓度范围分别为 39.11 至 470.14μg/m3和 1.03 至 525.42μg/m3。含氧化合物对 VOCs 的贡献最大（58.25%）。在含氧化合物中，酮、酯和醚是主要类别，分别占 67.5%、12.70%和 11.85%。关键气味物质包括丙醛、己醛醛、丙酸、乙醛和二异丙醚。N-亚硝基二乙胺、丙烯腈和 1,3-丁二烯是三种主要的致癌物质，对人体健康构成相当大的风险。在 RSWTS 中检测到的 VOC 中，丙烯酰氯是最具非致癌性的病原体。随着下风方向的扩散，VOCs 的浓度逐渐降低，其风险相应减弱。在距离 RSWTS 100m 的 RSWTS-10 采样点，丙烯腈和 1,3-丁二烯对人体健康仍存在不可接受的致癌风险。本研究为评估痕量 VOC 的排放特征、嗅觉效应和健康风险提供了新的数据，特别是来自 RSWTS 的排放特征、嗅觉效应和健康风险。
