Contaminated sites from pesticide industry have attracted global concern due to the characteristics of organic pollution with high concentrations and complete loss of habitat conditions. Remediation of organophosphorus pesticide polluted soil using microwave-activated persulfate (MW/PS) oxidation was investigated in this study, with parathion as the representative pesticide. Approximately 90 % of parathion was degraded after 90 min of MW/PS oxidation treatment, which was superior to those by single PS or MW treatment. Relatively greater performances for parathion degradation were obtained in a relatively larger PS dosage, higher microwave temperature, and lower organic matter content. Appropriate soil moisture favored parathion degradation in soil. SO₄⁻, OH, O₂⁻, and ¹O₂ generated in the MW/PS system all contributed to parathion degradation. Multiple spectroscopy analyses indicated that PO and PS bonds in parathion were destroyed after MW/PS oxidation, accompanied by generation of hydroxylated and carbonylated byproducts. The soil safety after parathion degradation was assessed via model prediction. Furthermore, MW/PS oxidation also exhibited great performance for degradation of other organophosphorus pesticides, including ethion, phorate, and terbufos.

由于高浓度有机污染的特征以及栖息地条件的完全丧失，农药行业的污染场所引起了全球关注。本研究以对硫磷为代表农药，研究了微波活化过硫酸盐（MW / PS）氧化修复有机磷农药污染土壤的方法。MW / PS氧化处理90分钟后，约90％的对硫磷降解，优于单次PS或MW处理。在相对较大的PS剂量，较高的微波温度和较低的有机物含量下，对硫磷降解的性能相对较高。适当的土壤水分有利于对硫磷在土壤中的降解。SO ₄ ^- ，OH，O- ₂⁻和MW / PS系统中产生的¹ O ₂均导致对硫磷降解。多重光谱分析表明，对硫磷中的P O和P S键在MW / PS氧化后被破坏，并伴有羟基化和羰基化副产物的产生。通过模型预测评估对硫磷降解后的土壤安全性。此外，MW / PS氧化还具有出色的降解其他有机磷农药（包括乙硫磷，磷酸根和萜品磷）的性能。