Abstract. Benzobicyclon is a triketone pro-herbicide that needs to be hydrolyzed to form an active compound benzobicyclon hydrolysate (BH). This study aimed to investigate the migration behavior of BH in different types of agricultural soil and the associated influencing factors. Soil thin-layer chromatography and column leaching tests were used to study the migration behavior of BH in these soils. Based on the mobility retention factor (R_f = 0.34–0.90), the mobility of BH in thin soil layers was ranked in the order Lixisols > Anthrosols > Ferralsols > Phaeozems. The R_f value of BH was linearly positively correlated with soil sand content and pH, and negatively correlated with other physical and chemical properties of soil. BH was difficult to leach in Phaeozems, less difficult to leach in Ferralsols, and easy to leach in Anthrosols and Lixisols. Increasing the BH dosage and rainfall amount or adding humic acid and anionic (dodecyl benzene sulfonic acid) or nonionic (Tween-80) surfactant blocked BH migration in soil columns. In contrast, increasing the leaching solution pH and adding cationic surfactant (cetyl trimethyl ammonium bromide) promoted BH migration in soil columns.BH application has a low risk of groundwater pollution in Phaeozems and Ferralsols, but poses a potential threat to groundwater in Anthrosols and Lixisols.

中文翻译：

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苯并双环酮水解物在不同农田土壤中的迁移行为及影响因素

摘要。Benzobicyclon 是一种三酮前除草剂，需要水解形成活性化合物苯并双环酮水解物 (BH)。本研究旨在调查BH在不同类型农业土壤中的迁移行为及其影响因素。土壤薄层色谱和柱浸试验用于研究 BH 在这些土壤中的迁移行为。根据迁移率保持因子（R _f = 0.34–0.90），BH 在薄土层中的迁移率按 Lixisols > Anthrosols > Ferralsols > Phaeozems 的顺序排列。的ř _˚FBH值与土壤含沙量和pH值呈线性正相关，与土壤其他理化性质呈负相关。BH在Phaeozems中难以浸出，在Feralsols中浸出难度较低，而在Anthrosols和Lixisols中易于浸出。增加BH用量和降雨量或添加腐殖酸和阴离子（十二烷基苯磺酸）或非离子（Tween-80）表面活性剂可阻止BH在土柱中的迁移。相比之下，提高浸出液pH值和添加阳离子表面活性剂（十六烷基三甲基溴化铵）促进了土柱中BH的迁移。BH施用对Phaeozems和Ferralsols地下水污染的风险较低，但对Anthrosols和Lixisols中的地下水构成潜在威胁.