1,3-Diphenylguanidine, benzothiazole, benzotriazole, and their derivatives in soils collected from northeastern United States.
1,3-Diphenylguanidine, benzothiazole, benzotriazole, and their derivatives in soils collected from northeastern United States.
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从美国东北部收集的土壤中的 1,3-二苯胍、苯并噻唑、苯并三唑及其衍生物。
DOI：
10.1016/j.scitotenv.2023.164110
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Kannan,Kurunthachalam
中科院分区：
文献类型：
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作者：
Li,Zhong-Min;Pal,VineetKumar;Kannan,Pranav;Li,Wenlong;Kannan,Kurunthachalam
1,3-二苯胍（DPG）、苯并噻唑（BTH）、苯并三唑（BTR）及其衍生物是高产量化学品，广泛用于轮胎、缓蚀剂和塑料制品。车辆交通是环境中这些化学物质的重要来源。尽管如此，人们对路边土壤中这些化学物质的存在知之甚少。在这项研究中，我们确定了从美国东北部采集的 110 个土壤样本中 3 种 DPG、5 种 BTH 和 7 种 BTR 的浓度、概况和分布模式。我们发现路边土壤中测量的 15 种分析物中有 12 种广泛存在，检测频率≥71%，中位浓度范围为 0.38–380 ng/g（干重）。 DPG 是主要化学物质，占所确定的三类化学物质总浓度的 63%，其次是 BTH (28%) 和 BTR (9%)。所有分析物（1-、4-和 5-OH-BTR 除外）的浓度均表现出显着的正相关性（r：0.1-0.9，p < 0.01），表明它们具有共同来源和/或相似的环境命运。高速公路、橡胶操场和室内停车场的土壤中 DPG、BTH 和 BTR 的浓度高于花园、公园和住宅区的土壤。我们的研究结果表明，橡胶产品，尤其是汽车轮胎中会释放 DPG、BTH 和 BTR。需要进一步研究来调查这些化学物质对人类和野生动物的环境归趋和毒性。
1,3-Diphenylguanidine (DPG), benzothiazole (BTH), benzotriazole (BTR), and their derivatives are high-production-volume chemicals widely used in tires, corrosion inhibitors and plastic products. Vehicular traffic is an important source of these chemicals in the environment. Despite this, little is known about the occurrence of these chemicals in roadside soils. In this study, we determined the concentrations, profiles, and distribution patterns of 3 DPGs, 5 BTHs, and 7 BTRs in 110 soil samples collected from northeastern United States. We found widespread occurrence of 12 out of the 15 analytes measured in roadside soils, at detection frequencies ≥71 % and median concentrations in the range of 0.38–380 ng/g (dry weight). DPGs were the predominant chemicals accounting for 63 % of the sum concentrations of three chemical classes determined, followed by BTHs (28 %) and BTRs (9 %). The concentrations of all analytes (except for 1-, 4-, and 5-OH-BTRs) exhibited significant positive correlations (r: 0.1–0.9,p< 0.01), suggestive of their common sources and/or similar environmental fates. Higher concentrations of DPGs, BTHs and BTRs were found in soils from highways, rubberized playgrounds, and indoor parking lots than those from gardens, parks, and residential areas. Our findings suggest the release of DPGs, BTHs and BTRs from rubber products, especially automobile tires. Further studies are needed to investigate the environmental fate and toxicities of these chemicals to humans and wildlife.