Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, 50200, Thailand.
School of Public Health, Environmental Health, University of Phayao, Phayao, 56000, Thailand.
Sci Rep. 2024 Jun 10;14(1):13327. doi: 10.1038/s41598-024-64291-2.
This study investigates the environmental impact of burning herbicide-contaminated biomass, focusing on atrazine (ATZ) and diuron (DIU) sprayed on rice straw prior to burning. Samples of soil, biomass residues, total suspended particulate (TSP), particulate matter with an aerodynamic diameter ≤ 10 µm (PM), and aerosols were collected and analyzed. Soil analysis before and after burning contaminated biomass showed significant changes, with 2,4-dichlorophenoxyacetic acid (2,4-D) initially constituting 79.2% and decreasing by 3.3 times post-burning. Atrazine-desethyl, sebuthylazine, and terbuthylazine were detected post-burning. In raw rice straw biomass, terbuthylazine dominated at 80.0%, but burning ATZ-contaminated biomass led to the detection of atrazine-desethyl and notable increases in sebuthylazine and terbuthylazine. Conversely, burning DIU-contaminated biomass resulted in a shift to 2,4-D dominance. Analysis of atmospheric components showed changes in TSP, PM, and aerosol samples. Linuron in ambient TSP decreased by 1.6 times after burning ATZ-contaminated biomass, while atrazine increased by 2.9 times. Carcinogenic polycyclic aromatic hydrocarbons (PAHs), including benzo[a]anthracene (BaA), benzo[a]pyrene (BaP), and benzo[b]fluoranthene (BbF), increased by approximately 9.9 to 13.9 times after burning ATZ-contaminated biomass. In PM, BaA and BaP concentrations increased by approximately 11.4 and 19.0 times, respectively, after burning ATZ-contaminated biomass. This study sheds light on the environmental risks posed by burning herbicide-contaminated biomass, emphasizing the need for sustainable agricultural practices and effective waste management. The findings underscore the importance of regulatory measures to mitigate environmental contamination and protect human health.
本研究调查了燃烧受除草剂污染的生物质的环境影响，重点研究了在燃烧前喷洒在稻草上的莠去津（ATZ）和敌草隆（DIU）。采集并分析了土壤、生物质残渣、总悬浮颗粒物（TSP）、空气动力学直径≤10μm 的颗粒物（PM）和气溶胶样本。燃烧污染生物质前后的土壤分析显示出显著变化，燃烧前 2,4-二氯苯氧基乙酸（2,4-D）最初占 79.2%，燃烧后减少了 3.3 倍。燃烧后检测到莠去津去乙基、西布津和特丁津。在原稻草生物质中，特丁津占 80.0%，但燃烧 ATZ 污染的生物质导致检测到莠去津去乙基和西布津和特丁津显著增加。相反，燃烧 DIU 污染的生物质导致 2,4-D 占主导地位。大气成分分析显示 TSP、PM 和气溶胶样本发生了变化。燃烧 ATZ 污染的生物质后，环境 TSP 中的敌草隆减少了 1.6 倍，而莠去津增加了 2.9 倍。致癌多环芳烃（PAHs），包括苯并[a]蒽（BaA）、苯并[a]芘（BaP）和苯并[b]荧蒽（BbF），燃烧 ATZ 污染的生物质后增加了约 9.9 至 13.9 倍。在 PM 中，BaA 和 BaP 的浓度分别增加了约 11.4 倍和 19.0 倍，燃烧 ATZ 污染的生物质后。本研究揭示了燃烧受除草剂污染的生物质带来的环境风险，强调了需要采取可持续农业实践和有效的废物管理措施。研究结果强调了采取监管措施减轻环境污染和保护人类健康的重要性。
