高原环境砷含量与暴露风险数据（2020-2022）

该数据集为青藏高原土壤砷含量和风险暴露的数据，时间为2020-2022年，数据格式为TXT。采样点覆盖拉萨、山南和林芝等重点区域。土壤样品采样方法为五点式混合法，收集约1000g表层土壤(0-20cm)，将其充分混合后放入样品袋，记录采样点的地理坐标和高程。土壤样品风干、去除碎片(植物根、树枝、生物残留物)，碾碎后过100目尼龙筛并装袋进行进一步测试。采用高清X射线荧光重金属分析设备（XOS）测定土壤样品中砷含量，标准土壤(样品GBW07403)砷测定值与标准值相对误差值为5.79%、相对标准偏差为6.96%。另外，采用美国环保署(EPA)风险模型评价人体通过直接摄入的健康风险。青藏高原作为一个地方病高发，生态脆弱的地区，该数据可以应用于高原土壤砷潜在风险、时空变化等方面的研究。

This dataset contains soil arsenic concentration and risk exposure data from the Qinghai-Tibet Plateau, collected between 2020 and 2022, with data stored in TXT format. The sampling sites cover key regions including Lhasa, Shannan, and Nyingchi. Soil samples were collected using the five-point composite sampling method: approximately 1000g of topsoil (0-20 cm depth) was gathered, thoroughly mixed, placed into sample bags, and the geographic coordinates and elevation of each sampling site were recorded. Subsequently, soil samples were air-dried, debris including plant roots, branches, and biological residues was removed, crushed, passed through a 100-mesh nylon sieve, and then bagged for further testing. Arsenic concentrations in soil samples were determined using a high-definition X-ray fluorescence heavy metal analyzer (XOS). For the certified reference soil sample GBW07403, the relative error between the measured arsenic concentration and the certified value was 5.79%, and the relative standard deviation was 6.96%. In addition, the U.S. Environmental Protection Agency (EPA) risk assessment model was adopted to evaluate human health risks via direct soil ingestion. As the Qinghai-Tibet Plateau is a region with high endemic disease incidence and fragile ecology, this dataset can be applied to studies on the potential risks and spatiotemporal variations of soil arsenic on the plateau.

搜集汇总

背景与挑战

背景概述

该数据集为2020-2022年青藏高原土壤砷含量和风险暴露数据，覆盖拉萨、山南和林芝等重点区域，采用五点式混合法采样和X射线荧光分析测定砷含量，适用于高原土壤砷潜在风险和时空变化研究。