Department of Inorganic, Analytical Chemistry and Electrochemistry, Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego 6 Str., 44-100 Gliwice, Poland.
Biotechnology Centre, Silesian University of Technology, B. Krzywoustego 8 Str., 44-100 Gliwice, Poland.
Int J Environ Res Public Health. 2022 Dec 17;19(24):16994. doi: 10.3390/ijerph192416994.
Phytoremediation is an environmentally friendly and economical method for removing organic contaminants from water. The purpose of the present study was to use for the phytoremediation of water from sulfamethoxazole (SMX) and trimethoprim (TRI) residues. The experiment was conducted for 14 days, in which the loss of the pharmaceuticals in water and their concentration in plant tissues was monitored. Determination of SMX and TRI was conducted using liquid chromatography coupled with tandem mass spectrometry. The results revealed that various factors affected the removal of the contaminants from water, and their bioaccumulation coefficients were obtained. Additionally, the transformation products of SMX and TRI were identified. The observed decrease in SMX and TRI content after 14 days was 96.0% and 75.4% in water, respectively. SMX removal mainly involved photolysis and hydrolysis processes, whereas TRI was mostly absorbed by the plant. Bioaccumulation coefficients of the freeze-dried plant were in the range of 0.043-0.147 for SMX and 2.369-2.588 for TRI. Nine and six transformation products related to SMX and TRI, respectively, were identified in water and plant tissues. The detected transformation products stemmed from metabolic transformations and photolysis of the parent compounds.
植物修复是一种从水中去除有机污染物的环保且经济的方法。本研究旨在利用 对磺胺甲恶唑（SMX）和甲氧苄啶（TRI）残留的水进行植物修复。实验进行了 14 天，监测了水中药物的损失及其在植物组织中的浓度。采用液相色谱-串联质谱法测定 SMX 和 TRI。结果表明，各种因素影响了污染物从水中的去除，得到了它们的生物富集系数。此外，还鉴定了 SMX 和 TRI 的转化产物。经过 14 天，水中 SMX 和 TRI 的含量分别减少了 96.0%和 75.4%。SMX 的去除主要涉及光解和水解过程，而 TRI 主要被植物吸收。冻干植物的生物富集系数范围为 0.043-0.147，SMX 的生物富集系数为 2.369-2.588。在水中和植物组织中分别鉴定出与 SMX 和 TRI 相关的 9 种和 6 种转化产物。检测到的转化产物源于母体化合物的代谢转化和光解。
