Bera G, Camargo K, Sericano J L, Liu Y, Sweet S T, Horney J, Jun M, Chiu W, Rusyn I, Wade T L, Knap A H
Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas 77840, USA.
Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas 77840, USA.
Heliyon. 2019 Nov 16;5(11):e02860. doi: 10.1016/j.heliyon.2019.e02860. eCollection 2019 Nov.
Hurricane Harvey made landfall in Texas August 25, 2017, bringing massive rains and flooding that impacted soils in a residential neighborhood in East Houston. Trace elements, organochlorine pesticides, polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ether fire retardants (PBDEs) and polychlorinated biphenyls (PCBs) were determined in 24 soil samples. The highest concentrations found in soils were total PAHs, which ranged from 1,310 μg/kg to 85,700 μg/kg with a mean of 12,600 μg/kg. Analysis of specific PAH ratios indicate the source of the PAHs were dominated by pyrogenic rather than petrogenic sources. Chlordanes were detectable in the area where the likely local source is for ant control. The trace metal concentrations were below any environmental health concern concentrations but As, Cd, Hg, Pb, Se, Ag, Zn were enriched over the crustal abundance. While Hurricane Harvey was responsible for the redistribution of many contaminants, the large volume of rain and floodwater likely transported contaminants from the land areas and into the Houston Ship Channel and Galveston Bay. The findings from this study will serve as baseline data for determining the mobilization of contaminants caused by natural disasters.
2017年8月25日，飓风哈维在得克萨斯州登陆，带来了大量降雨和洪水，对休斯敦东部一个居民区的土壤造成了影响。对24个土壤样本中的微量元素、有机氯农药、多环芳烃（PAHs）、多溴二苯醚阻燃剂（PBDEs）和多氯联苯（PCBs）进行了测定。土壤中发现的最高浓度物质是总PAHs，范围为1310μg/kg至85700μg/kg，平均为12600μg/kg。对特定PAH比例的分析表明，PAHs的来源主要是热成因而非石油成因。在可能存在当地蚂蚁防治来源的区域检测到了氯丹。痕量金属浓度低于任何环境健康关注浓度，但砷、镉、汞、铅、硒、银、锌的含量高于地壳丰度。虽然飓风哈维导致了许多污染物的重新分布，但大量的降雨和洪水可能将污染物从陆地区域输送到了休斯敦航道和加尔维斯顿湾。本研究的结果将作为确定自然灾害导致污染物迁移的基线数据。
