Dataset of nanoplastic transport in soil via bioturbation by Lumbricus terrestris

The dataset comprises data acquired in laboratory-based process-studies with microcosms on the transport of nanoplastics (polystyrene, 256 nm diameter) in an agricultural soil via bioturbation over the course of 4 weeks. Transport of nanoplastics was monitored through the use of palladium (Pd)-doped nanoplastics (0.24 % w/w) by analyzing soil samples at specific depths (0-2 cm, 2-6 cm, 6-15 cm, 15-29 cm) after defined experimental times (7, 14, 21, 28 days). Microcosms consisted of 30 cm height, 10 cm diameter soil columns which were set up with or without earthworms and with or without nanoplastics spiked to the uppermost 2 cm. Two experimental runs were executed with the first (Exp1) designed to focus on the average transport within the soil profile over time, and the second (Exp2) focussing on the smaller scale distribution of the nanoplastics in the soil (i.e. soil matrix versus drilosphere) while monitoring earthworm burrow development over time using X-ray computed tomography. In ...

本数据集源自基于实验室的微宇宙（microcosms）过程研究数据，研究主题为4周周期内，生物扰动（bioturbation）作用下纳米塑料（nanoplastics，聚苯乙烯，粒径256 nm）在农业土壤中的运移过程。研究通过使用掺钯（Pd，0.24% w/w）的纳米塑料，在预设实验时长（7、14、21、28天）后对特定深度（0-2 cm、2-6 cm、6-15 cm、15-29 cm）的土壤样品进行分析，以此监测纳米塑料的运移情况。实验所用微宇宙装置为高度30 cm、直径10 cm的土壤柱体，分别设置有无蚯蚓、是否向表层2 cm土壤中投加纳米塑料的实验组别。本研究共开展两轮实验：首轮实验（Exp1）旨在探究随时间推移纳米塑料在土壤剖面中的平均运移规律；次轮实验（Exp2）则聚焦纳米塑料在土壤内的微观尺度分布（即土壤基质与蚓际圈（drilosphere）的差异分布），同时通过X射线计算机断层扫描（X-ray computed tomography）监测蚯蚓洞穴随时间的发育情况。In ...