Natural Resource Conservation Service, Dickinson, ND 58601, USA.
J Hazard Mater. 2011 Aug 30;192(2):748-52. doi: 10.1016/j.jhazmat.2011.05.080. Epub 2011 Jun 1.
The occurrence of the manure-borne estrogen, 17β-estradiol (E2), was investigated in laboratory and field soils. In the laboratory, E2 was applied to soil to simulate concentrations found in swine (Sus scrofa domestica) manure (5000ngL(-1)). The aqueous-extracted E2 dissipated in the soil by 98% within 1h and was not significantly different from background concentrations (18ng L(-1)) for the duration of the experiment (64h). In the field study, soil cores were taken before and several dates after swine manure application. Equivalent porewater concentrations of water-extractable E2 were determined in 0.15-m increments down to the water table (0.70-2.00m deep). The average frequency of detection for 168 samples was 38% (average=40ng L(-1) porewater equivalents). Eleven days after manure application there was no significant effect on E2 detection frequency or concentration. However, E2 concentrations significantly increased by 6 months after manure application, and appeared to be related to precipitation. Concentrations then returned to original levels by 17 months after manure application. Manure did not have an immediate effect on E2 occurrence due to the capacity of the soil to rapidly sorb E2. However, it appears that soil may act as a long-term reservoir for E2 in the environment, which may be periodically released through desorption.
粪肥源性雌激素 17β-雌二醇（E2）在实验室和田间土壤中的出现情况进行了调查。在实验室中，将 E2 施用于土壤中以模拟猪（Sus scrofa domestica）粪肥中发现的浓度（5000ngL(-1)）。在实验期间（64h），土壤中 98%的水提取 E2 在 1h 内消散，与背景浓度（18ng L(-1)）无显著差异。在田间研究中，在施猪粪前后采集了土壤芯。在 0.15m 的增量下确定了可提取水的 E2 的等效孔隙水浓度，直到地下水位（0.70-2.00m 深）。168 个样品的平均检出频率为 38%（平均=40ng L(-1)孔隙水当量）。施粪后 11 天，E2 检出频率或浓度没有显著影响。然而，施粪后 6 个月 E2 浓度显著增加，似乎与降水有关。施粪后 17 个月，E2 浓度又恢复到原来的水平。由于土壤对 E2 的快速吸附能力，粪肥对 E2 的出现没有立即产生影响。然而，土壤似乎可能成为环境中 E2 的长期储存库，通过解吸可能会定期释放。
