Urbaniak Magdalena, Zieliński Marek, Wyrwicka Anna
a European Regional Centre for Ecohydrology, Polish Academy of Sciences , Lodz , Poland.
b Faculty of Biology and Environmental Protection , Department of Applied Ecology , University of Lodz , Lodz , Poland.
Int J Phytoremediation. 2017 Mar 4;19(3):207-213. doi: 10.1080/15226514.2016.1207606.
The study evaluates the impact of sewage sludge on OECD - Organization for Economic Cooperation and Development and vegetable soil phytotoxicity, measured using three test species: Lepidium sativum, Sinapis alba and Sorghum saccharatum, and total and TEQ PCDD/PCDF (toxic equivalency polychlorinated dibenzo-p-dioxins/polychlorinated dibenzofurans) soil concentration, measured using HRGC/HRMS - High Resolution Gas Chromatography/High Resolution Mass Spectrometry. It also evaluates the effect of zucchini and cucumber cultivation during 5-weeks period on mitigating these parameters. The application of 3, 9 and 18 t/ha of sewage sludge gradually increases the phytotoxicity of both OECD and vegetable soil. In the case of OECD soil, the highest roots growth inhibitions were observed for S. alba (73%, 86% and 87%, respectively) and the lowest for S. saccharatum (7%, 59% and 70%), while in vegetable soil inhibitions were averagely 25% lower. Sludge application also led to a 38% (3 t/ha), 169% (9 t/ha) and 506% (18 t/ha) increase in PCDD/PCDF concentration, and the TEQs were augmented by 15%, 159% and 251%. Both soil phytotoxicity and total and TEQ PCDD/PCDF concentrations were diminished as a result of zucchini and cucumber cultivation. The maximum reduction of soil phytotoxicity (83%) was observed as an effect of cucumber cultivation, while zucchini was 11% less effective. Zucchini, in turn, was more efficient in PCDD/PCDF removal (37% reduction), followed by cucumber (24%). Such differences were not observed in the case of TEQ reductions (68% and 66% for zucchini and cucumber cultivation, respectively).
该研究评估了污水污泥对经合组织（经济合作与发展组织）土壤和蔬菜种植土壤的植物毒性影响，使用三种受试物种进行测量：水萝卜、白芥和甜高粱，以及采用高分辨率气相色谱/高分辨率质谱法测量的土壤中多氯二苯并对二恶英/多氯二苯并呋喃（PCDD/PCDF）的总量和毒性当量（TEQ）浓度。研究还评估了西葫芦和黄瓜在5周种植期内对缓解这些参数的效果。施加3、9和18吨/公顷的污水污泥会逐渐增加经合组织土壤和蔬菜种植土壤的植物毒性。对于经合组织土壤，白芥的根系生长抑制率最高（分别为73%、86%和87%），甜高粱的最低（7%、59%和70%），而在蔬菜种植土壤中，抑制率平均低25%。施加污泥还导致PCDD/PCDF浓度分别增加38%（3吨/公顷）、169%（9吨/公顷）和%（18吨/公顷），毒性当量分别增加15%、159%和251%。西葫芦和黄瓜的种植降低了土壤植物毒性以及PCDD/PCDF的总量和毒性当量浓度。黄瓜种植对土壤植物毒性的降低效果最为显著（83%），西葫芦的效果则低11%。西葫芦对PCDD/PCDF的去除效率更高（降低37%），其次是黄瓜（降低24%）。在毒性当量降低方面未观察到此类差异（西葫芦和黄瓜种植分别降低68%和66%）。
