Present Address: Department of Land Resources Management, Chongqing Technology and Business University, Xuefu Avenue 19, Nan'an District, Chongqing 400067, China; Soil Science, University of Trier, Behringstraße 21, 54296 Trier, Germany.
State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China.
J Hazard Mater. 2024 Sep 15;477:135277. doi: 10.1016/j.jhazmat.2024.135277. Epub 2024 Jul 22.
Waste-derived organics introduced to soils along with pharmaceutical active compounds (PhAC) are a crude mixture of compounds occurring in various size and polarity fractions. They affect the sorption of PhACs to soil; however, the relevant knowledge is still insufficient. The effects of different size and polarity fractions of manure-derived mobile organic matter (<63 µm) on the sorption of sulfadiazine, caffeine and atenolol to five topsoils were investigated. Mobilization of the PhACs was strongest in the presence of dissolved organic matter (mDOM, <0.45 µm), with a reduction of K of sulfadiazine, caffeine and atenolol by mean factors of 0.66, 0.57 and 0.41, respectively. The mobilizing effects of colloidal organic matter (0.45-10 µm) were slightly smaller. Fine particulate organic matter (10-63 µm) reduced the sorption of the PhACs in slightly acidic soils (pH 6.0), but increased it in strongly acidic soil (pH 4.3). Furthermore, hydrophobic (HO-mDOM) and hydrophilic (HI-mDOM) fractions of mDOM reduced the sorption capacity but increased the sorption nonlinearity of PhACs in soils. Effects of HO-mDOM and HI-mDOM were PhAC specific. It is suggested to consider the varying impacts of mobile fractions in animal manure and/or treated wastewater in evaluating the fate and environmental relevance of associated PhACs.
废物衍生的有机物与药物活性化合物（PhAC）一起引入土壤，是存在于各种大小和极性分数中的化合物的粗混合物。它们会影响 PhAC 对土壤的吸附；然而，相关知识仍然不足。研究了来自粪肥的移动有机物质（<63μm）的不同大小和极性分数对磺胺嘧啶、咖啡因和阿替洛尔在五种表土上吸附的影响。在溶解有机物质（mDOM，<0.45μm）存在的情况下，PhAC 的迁移最强，磺胺嘧啶、咖啡因和阿替洛尔的 K 值分别平均降低了 0.66、0.57 和 0.41。胶体有机物质（0.45-10μm）的迁移作用略小。细颗粒有机物质（10-63μm）在略酸性土壤（pH 6.0）中降低了 PhAC 的吸附，但在强酸性土壤（pH 4.3）中增加了吸附。此外，mDOM 的疏水性（HO-mDOM）和亲水性（HI-mDOM）部分降低了 PhAC 在土壤中的吸附容量，但增加了吸附的非线性。HO-mDOM 和 HI-mDOM 的影响是 PhAC 特异性的。建议在评估相关 PhAC 的命运和环境相关性时，考虑动物粪便和/或处理废水中移动分数的变化影响。
