Stamm Emily R, Coldren Cade, Williams Clinton, Simpson Catherine
Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA.
Department of Horticulture, Auburn University, Auburn, AL 36849, USA.
Plants (Basel). 2025 Jul 14;14(14):2165. doi: 10.3390/plants14142165.
As potable water becomes limited, alternative water sources, such as reclaimed wastewater, for crop irrigation have gained attention. However, reclaimed wastewater for irrigation may expose edible crops to compounds of emerging concern (CECs), which may include pharmaceutics, hazardous waste, and volatile substances. Of these CECs, carbamazepine (CBZ) is of particular interest because only 7% of CBZ is filtered out during traditional wastewater treatment processing methods. Two trials were designed to evaluate the uptake and partitioning of CBZ in lettuce grown in a deep-water culture system (DWC) at low and high concentrations. The first trial (0 µg L, 12.5 µg L, 25 µg L, and 50 µg L) of CBZ had few effects on lettuce ( var. ) growth, and low concentrations of accumulated CBZ were found in lettuce tissues. As a result, increased concentrations of CBZ were used in the second trial (0 mg L, 21 mg L, 41 mg L, and 83 mg L). Greater amounts of CBZ accumulated in plant tissues and the application of higher rates of CBZ negatively affected the growth and overall health of the lettuce. Further research is needed to determine the impacts of CECs on plant uptake and growth, as well as the environmental conditions.
随着饮用水资源日益有限，诸如再生废水等替代水源用于作物灌溉已受到关注。然而，用于灌溉的再生废水可能会使可食用作物接触到新出现的关注化合物（CECs），其中可能包括药物、危险废物和挥发性物质。在这些CECs中，卡马西平（CBZ）尤为引人关注，因为在传统废水处理工艺中，只有7%的CBZ能被过滤掉。设计了两项试验来评估低浓度和高浓度下，CBZ在深水栽培系统（DWC）中种植的生菜中的吸收和分配情况。CBZ的首次试验（0 µg/L、12.5 µg/L、25 µg/L和50 µg/L）对生菜（品种）生长影响较小，且在生菜组织中发现了低浓度积累的CBZ。因此，在第二次试验中使用了更高浓度的CBZ（0 mg/L、21 mg/L、41 mg/L和83 mg/L）。植物组织中积累了更多的CBZ，且较高剂量的CBZ施用对生菜的生长和整体健康产生了负面影响。需要进一步研究以确定CECs对植物吸收和生长的影响以及环境条件。
