Dispersion, olfactory effect, and health risks of VOCs and odors in a rural domestic waste transfer station
Dispersion, olfactory effect, and health risks of VOCs and odors in a rural domestic waste transfer station
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农村生活垃圾中转站VOCs和恶臭的弥散、嗅觉效应及健康风险
DOI：
10.1016/j.envres.2022.112879
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发表时间：
2022-02-07
影响因子：
8.3
通讯作者：
Yang, Kaixiong
中科院分区：
文献类型：
--
作者：
Chai, Fengguang;Li, Pengyu;Yang, Kaixiong
垃圾转运站所排放的臭味气体所造成的影响，一直是附近居民所关注的问题。对西南地区某农村生活垃圾中转站的挥发性有机物（VOCs）和恶臭气体进行了调查。共鉴定和定量了70种VOCs。总挥发性有机化合物（TVOCs）的浓度范围为848.38至31193.24 μ g/m3。无机臭气和温室气体浓度分别为39.11 - 470.14 μ g/m3和1.03-525.42 μ g/m3。含氧化合物的贡献最大（58.25%）的VOCs。含氧化合物中以酮类、酯类和醚类为主，分别占67.5%、12.70%和11.85%。关键的气味剂包括丙醛、己醛、丙酸、乙醛和二异丙醚。亚硝基二乙胺、丙烯腈和1，3-丁醇是对人体健康构成威胁的三种主要致癌物。氯丙烯是最非致癌性的病原体中检测到的挥发性有机化合物在垃圾填埋场。随着下风向的扩散，挥发性有机化合物的浓度逐渐降低，其风险也相应减弱。在距离RSWTS-10 100 m的采样点，丙烯腈和1，3-丁二醇对人体健康仍有不可接受的致癌风险。本研究为评估痕量挥发性有机物的排放特性、嗅觉效应和健康风险提供了新的数据，特别是垃圾填埋场排放的挥发性有机物。
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 mu g/m3. Inorganic odor and greenhouse gases concentrations ranged from 39.11 to 470.14 mu g/m3 and 1.03-525.42 mu g/m3, 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.