Modulating Leaching of Mesosulfuron Methyl, Iodosulfuron Methyl and Transformation Products: Effects of Rainfall Intensity, Flow Patterns and Organic Amendments.

IF 2.7 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Harshdeep Kaur, Pervinder Kaur, Sandeep Sharma, Makhan Singh Bhullar
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引用次数: 0

Abstract

In light of the environmental pollution risks, the effect of rainfall and flow conditions and addition of farmyard manure on leaching potential of mesosulfuron, iodosulfuron methyl and their transformation products (TPs) was evaluated. Leaching was higher under 300 mm rainfall compared to 150 mm. Discontinuous flow conditions led to lower residues of the parent herbicides but higher concentrations of their TPs. Among different TPs, mesosulfuron (M1), 2-[3-(4-hydroxy-6-methoxy pyrimidin-2-yl) ureido sulfonyl]- 4 - methane sulfonamido methyl benzoate (M2), metsulfuron methyl (I1) and methyl-2-(amino-sulfonyl) benzoate (I2) was detected. M2 has the highest mobility followed by M1 and I1 suggesting highest potential contamination risk of M2 to lower soil profiles and groundwater. Addition of farmyard manure to soil reduced leachability of both parent herbicides and TPs, highlighting its potential to mitigate groundwater contamination and providing a sustainable approach to minimizing herbicide pollution. However, future studies are required to assess the effect of various organic matter amendments on the leaching of herbicides.

调节甲基中磺隆、甲基碘磺隆及其转化产物的浸出:降雨强度、流动方式和有机修正的影响。
针对环境污染风险,评价了降雨、水流条件和添加农家肥对中磺隆、甲基碘磺隆及其转化产物(TPs)淋溶潜力的影响。与150毫米降雨相比,300毫米降雨下的淋失率更高。不连续流动条件导致母本除草剂残留量降低,但其tp浓度升高。在不同的TPs中,检测到间磺隆(M1)、2-[3-(4-羟基-6-甲氧基嘧啶-2-基)脲基磺酰基]- 4-甲烷磺酰苯甲酸甲酯(M2)、甲磺隆甲酯(I1)和甲基-2-(氨基磺酰基)苯甲酸甲酯(I2)。M2的迁移率最高,其次是M1和I1,表明M2对下层土壤剖面和地下水的潜在污染风险最高。向土壤中添加农家肥降低了母体除草剂和TPs的淋滤性,突出了其减轻地下水污染的潜力,并提供了一种减少除草剂污染的可持续方法。然而,需要进一步的研究来评估各种有机质改良剂对除草剂淋滤的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
5.60
自引率
3.70%
发文量
230
审稿时长
1.7 months
期刊介绍: The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.
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