Sorrentino Maria Cristina, Capozzi Fiore, Wuyts Karen, Joosen Steven, Mubiana Valentine K, Giordano Simonetta, Samson Roeland, Spagnuolo Valeria
Department of Biology, Campus Monte S. Angelo, University of Naples Federico II, Via Cinthia 4, 80126 Napoli, Italy.
Department of Bioscience Engineering, Campus Groenenborgerlaan 171, University of Antwerp, 2020 Antwerp, Belgium.
Plants (Basel). 2021 Nov 5;10(11):2384. doi: 10.3390/plants10112384.
In this work the potential of moving moss-bags, fixed to bicycles, to intercept particulate matter (PM) and linked metal(loid)s was tested for the first time. Seven volunteers carried three moss-bags for fifty days while commuting by bicycle in the urban area of Antwerp, Belgium. Moreover, one bike, equipped with mobile PM samplers, travelled along four routes: urban, industrial, green route and the total path, carrying three moss-bags at each route. The saturation isothermal remanent magnetization (SIRM) signal and chemical composition (assessed by HR-ICP-MS) of the moss samples indicated that the industrial route was the most polluted. Element fluxes (i.e., the ratio between element daily uptake and the specific leaf area) could discriminate among land uses; particularly, they were significantly higher in the industrial route for Ag, As, Cd and Pb; significantly lowest in the green route for As and Pb; and comparable for all accumulated elements along most urban routes. A comparison with a previous experiment carried out in the same study area using similar moss-bags at static exposure points, showed that the element fluxes were significantly higher in the mobile system. Finally, PM2.5 and PM10 masses measured along the four routes were consistent with element fluxes.
在这项工作中，首次测试了固定在自行车上的移动苔藓袋拦截颗粒物（PM）及相关金属（类金属）的潜力。七名志愿者在比利时安特卫普市区骑自行车通勤时，携带三个苔藓袋，持续五十天。此外，一辆配备了移动PM采样器的自行车沿着四条路线行驶：城市、工业、绿色路线和全程路径，每条路线都携带三个苔藓袋。苔藓样本的饱和等温剩磁（SIRM）信号和化学成分（通过高分辨率电感耦合等离子体质谱法评估）表明，工业路线污染最严重。元素通量（即元素每日吸收量与比叶面积之比）可以区分不同土地利用类型；特别是，银、砷、镉和铅在工业路线上的元素通量显著更高；砷和铅在绿色路线上的元素通量显著最低；大多数城市路线上所有累积元素的通量相当。与之前在同一研究区域使用类似苔藓袋在静态暴露点进行的实验相比，结果表明移动系统中的元素通量显著更高。最后，沿四条路线测量的PM2.5和PM10质量与元素通量一致。
