In order to assess the environmental impacts caused by flood to the paddy field, 940 semi-volatile organic compounds (SVOCs) were screened in paddy soil samples taken in central Vietnam before and after flooding. The concentration of 166 SVOCs in soil samples ranged from 0.031 to 2241 (mean 89.1) µg kg⁻¹ dry wt. Chemicals originating from household sources showed the highest level, followed by chemicals originating from agriculture. Since untreated domestic wastewater used for agricultural irrigation, organic micro-pollutants in domestic wastewater is the main source of pollutants in paddy soil. However, contamination levels of pollutants in paddy soil after flooding were lower than those before flooding, possibly due to the removal of pollutants by floodwater. As a result, pollution characteristic of pollutants at sampling locations were different before flooding while they became similar after flooding due to the dispersion and elution of organic pollutants from soil into floodwaters.

为了评估洪水对稻田的环境影响，在洪水前后，在越南中部采集的稻田土壤样品中筛选了940种半挥发性有机化合物（SVOC）。土壤样品中166种SVOC的浓度范围为0.031至2241（平均89.1）µg kg ^-1干重 来自家庭的化学物质含量最高，其次是来自农业的化学物质。由于未经处理的生活污水用于农业灌溉，生活污水中的有机微污染物是稻田土壤污染物的主要来源。然而，淹水后稻田土壤中污染物的污染水平低于洪水前，这可能是由于洪水去除了污染物造成的。结果，由于土壤中有机污染物的分散和洗脱，水淹之前采样点污染物的污染特征有所不同，而水淹之后它们变得相似。