Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, People's Republic of China.
Key Laboratory of Agricultural Land Quality, Ministry of Natural Resources, Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture and Rural Affairs, College of Land Science and Technology, China Agricultural University, Beijing, 100193, People's Republic of China.
Environ Sci Pollut Res Int. 2023 Jan;30(3):7582-7592. doi: 10.1007/s11356-022-22704-7. Epub 2022 Aug 30.
This study presents monitoring data on the spatial distribution and occurrence of pesticide residues of cultivated soil in the Huangshui catchment in the northeastern part of the Qinghai Tibet Plateau. We also provide factors that influence the distribution of pesticides, such as the properties of pesticides and soil and crop types. A total of 110 soil samples were collected in early April 2021, and 49 pesticides were analyzed. Only 3.6% of the samples contained no pesticide residues (concentrations < limit of quantitation or not detected [ND]), and the total pesticide concentration ranged from ND to 0.925 mg/kg. Most commonly, two to five pesticides were found in the soil samples (> 70.9%), and up to 10 pesticide residues were present in some samples. A total of 85 different pesticide combinations were observed in all the soil samples. Chlorpyrifos and difenoconazole were the dominant compounds. The levels of pesticide residues were mainly driven by their half-life values. Bulk density, along with soil water content and pH, also affected the retention of pesticides in the soil. The crop type played no role in the distribution of pesticides.
本研究提供了青藏高原东北部黄水沟流域耕地土壤中农药残留的空间分布和发生情况的监测数据。我们还提供了影响农药分布的因素，如农药和土壤的性质以及作物类型。2021 年 4 月初共采集了 110 个土壤样本，分析了 49 种农药。只有 3.6%的样本不含农药残留（浓度<定量限或未检出[ND]），总农药浓度范围为 ND 至 0.925mg/kg。土壤样本中最常见的是含有两种到五种农药（>70.9%），有些样本中甚至含有多达十种农药残留。在所有土壤样本中总共观察到 85 种不同的农药组合。毒死蜱和三唑酮是主要的化合物。农药残留水平主要受其半衰期值的驱动。土壤容重以及土壤水分和 pH 值也影响了农药在土壤中的滞留。作物类型对农药的分布没有影响。
