Phase distribution of emerging organic contaminants is highly influential in their presence, fate and transport in surface water. Therefore, it is crucial to determine their state, partitioning behaviour and tendencies in water environments. In this study, Bisphenol A was investigated in both colloidal and soluble phases in water. BPA concentrations ranged between 1.13 and 5.52 ng L⁻¹ in the soluble phase and n.d-2.06 ng L⁻¹ in the colloidal phase, respectively. BPA was dominant in the soluble phase, however, the colloidal contribution ranged between 0 and 24% which implied that colloids can play a significant role in controlling BPA’s transportation in water. Urban and industrial areas were the main sources of BPA while forest areas displayed lower levels outside the populated domains. pH levels were between 6.3 and 7.4 which might have affected BPA’s solubility in water to some extent. The particle size distribution showed that the majority of the particles in river samples were smaller than 1.8 µm in diameter with a small presence of nanoparticles. Zeta potential varied between − 25 and − 18 mV, and these negative values suggested instability of particles. Furthermore, BPA was positively correlated with BOD, COD and NH₃–N which might indicate that these organic compounds were released concurrently with BPA. RQ assessment showed low levels of risk towards algae and fish in the study area.

新兴有机污染物的相分布对它们在地表水中的存在，结局和运输有很大影响。因此，确定它们在水环境中的状态，分配行为和趋势至关重要。在这项研究中，研究了双酚A在水中的胶体相和可溶性相。在可溶性相中，BPA浓度范围为1.13到5.52 ng L ^-1，nd-2.06 ng L ^-1在胶体阶段。BPA在可溶相中占主导地位，但是，胶体贡献在0％到24％之间，这意味着胶体在控制BPA在水中的运输中可以发挥重要作用。城市和工业区是双酚A的主要来源，而森林地区在人口稠密地区之外的水平较低。pH值在6.3至7.4之间，这可能在一定程度上影响了BPA在水中的溶解度。粒度分布表明，河水样品中的大多数颗粒直径小于1.8 µm，并且很少有纳米颗粒。Zeta电势在− 25至− 18 mV之间变化，这些负值表明颗粒不稳定。此外，BPA与BOD，COD和NH ₃呈正相关。-N可能表明这些有机化合物与BPA同时释放。RQ评估显示研究区域中藻类和鱼类的风险较低。