The centrifuge-less dispersive liquid-liquid microextraction (DLLME) technique was used to separate selenium species in aqueous samples. According to the salting-out effect, a simple approach was used to eliminate the centrifugation step. The optimization of the independent variables was performed using chemometric methods. Under optimal conditions, this methodology was statistically validated. The linearity was between 20 and 300 μg L⁻¹. The limit of detection and quantification were calculated 3.4 μg L⁻¹ and 10.4 μg L⁻¹, respectively. The values of reproducibility and repeatability were determined ≤ 9.5% and ≤ 6.4, respectively. The possibility of the method was successfully assessed by analyzing the analytes in real samples clarified satisfactory recoveries (98.1–101.4% for Se (IV) and 98.4–101.5% for Se (VI)).

无离心分散液-液微萃取（DLLME）技术用于分离水性样品中的硒。根据盐析效果，使用了一种简单的方法来消除离心步骤。使用化学计量学方法对自变量进行优化。在最佳条件下，对该方法进行了统计验证。线性在20至300μgL ^-1之间。计算的检出限和定量限为3.4μgL ^-1和10.4μgL ^-1， 分别。再现性和可重复性的值分别确定为≤9.5％和≤6.4。通过分析真实样品中的分析物成功地评估了令人满意的回收率（硒（IV）为98.1–101.4％，硒（VI）为98.4–101.5％），成功评估了该方法的可能性。