紫茎泽兰对四环素的吸收特性

[目的] 探究四环素在水和紫茎泽兰间的传递以及在紫茎泽兰体内的累积特征。[方法] 利用高效液相色谱检测紫茎泽兰幼苗在水培过程中对四环素的吸收及其在根茎叶中的积累。[结果] 在10~20 mg·L^-1四环素的处理浓度范围内，紫茎泽兰根、茎、叶均能吸收并积累四环素，且吸收累积量均随处理浓度和处理时间的增加而升高。当紫茎泽兰在20 mg·L^-1四环素的水培液处理20 d时，茎中的四环素累积量最高，为（59.34±3.86）mg·kg^-1；根中的次之，为（52.52±5.89）mg·kg^-1；而叶中的最低，为（23.19±4.17）mg·kg^-1。此外，紫茎泽兰茎的四环素富集系数最大，根的次之，叶的最小。[结论] 紫茎泽兰能够较好地从水培液中吸收并累积四环素，具有吸收净化四环素污染水源的潜力。

The absorption and accumulation rates of tetracycline in Eupatorium adenophorum

[Aim] This study investigated the transmission and accumulation of the tetracycline in Eupatorium adenophorum.[Method] Absorption and accumulation of the tetracycline were detected in the stems, leaves and roots of hydroponics seedlings of E. adenophorum by using High Performance Liquid Chromatography (HPLC).[Result] The results revealed that tetracycline increasingly accumulated in the roots, stems and leaves of the E. adenophorum with increased treatment concentrations ranging between 10~20 mg·L^-1 tetracycline and over time. Tetracycline showed highest accumulation amount in the stems[(59.34±3.86) mg·kg^-1] and lowest[(23.19±4.17) mg·kg^-1] in zeeran leaves. FW in the roots of E. adenophorum treated at a concentration of 20 mg·L^-1 tetracycline hydroponic solution for 20 days had (52.52±5.89) mg·kg^-1. The highest accumulation index of the tetracycline was in the stems of E. adenophorum, followed by the root and leaves.[Conclusion] In short, E. adenophorum can absorb and accumulate tetracycline from hydroponic solution while having the potential of absorbing and purifying the pollution of tetracycline.