Arsenic concentrations in dust emissions from wind erosion and off-road vehicles in the Nellis Dunes Recreational Area, Nevada, USA
Arsenic concentrations in dust emissions from wind erosion and off-road vehicles in the Nellis Dunes Recreational Area, Nevada, USA
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DOI：
10.1016/j.aeolia.2011.11.001
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发表时间：
2012-08-01
期刊：
影响因子：
3.3
通讯作者：
Teng, Yuanxin
中科院分区：
文献类型：
--
作者：
Soukup, Deborah;Buck, Brenda;Teng, Yuanxin
在美国内华达州拉斯维加斯附近的内利斯沙丘休闲区进行了现场和实验室实验，以评估与风蚀和越野车辆粉尘排放相关的砷浓度。从 17 种沙漠表面和 5 个未铺砌的停车场位置采集了土壤样本进行分析。表面单位基于影响粉尘排放的表面特征。还使用便携式原位风蚀实验室 (PI-SWERL) 测量了每个表面单元排放的灰尘中的砷浓度。排放量是从 ORV 路径和未受干扰的地形测量的。土壤和停车场样品中砷的浓度范围为3.49至83.02μg g(-1)，PI-SWERL样品中砷的浓度范围为16.13至312μg g(-1)。由于颗粒尺寸较大，预计土壤样品中的浓度较低（
Field and laboratory experiments were performed in the Nellis Dunes Recreational Area near Las Vegas, NV, USA to evaluate arsenic concentrations associated with dust emissions from wind erosion and off-road vehicles. Soil samples were collected from 17 types of desert surfaces and five unpaved parking lot locations for analyses. The surface units are based on surficial characteristics that affect dust emissions. Arsenic concentrations were also measured in dust emitted from each surface unit using a Portable In Situ Wind Erosion Laboratory (PI-SWERL). Emissions were measured from ORV trails and undisturbed terrain. Concentrations of As in the soil and parking lot samples ranged from 3.49 to 83.02 mu g g(-1) and from 16.13 to 312 mu g g(-1) in the PI-SWERL samples. The lower concentrations in the soil samples are expected because of the larger particle sizes (