Cyprosulfamide: Analysis of the Herbicide Safener and Two of Its Degradates in Surface Water and Groundwater from the Midwestern United States
Cyprosulfamide: Analysis of the Herbicide Safener and Two of Its Degradates in Surface Water and Groundwater from the Midwestern United States
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DOI：
10.1021/acsagscitech.1c00050
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发表时间：
2021-08
期刊：
影响因子：
--
通讯作者：
Monica E. McFadden;M. Hladik
中科院分区：
文献类型：
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作者：
Monica E. McFadden;M. Hladik
除草剂安全剂通常包含在除草剂制剂中，以选择性地保护作物免受除草剂毒性的影响，但对其环境发生和归宿的了解甚少。本研究建立了一种新的安全剂，环丙磺酰胺，和它的两个降解产物，环丙磺酰胺去甲基和N-环丙基-4-氨磺酰苯甲酰胺，在水中通过固相萃取和液相色谱串联质谱分析方法。为了评估潜在的场外运输和转化的环丙磺酰胺，该方法被用来分析地下水和地表水样品收集附近的玉米田在美国中西部的环丙磺酰胺已被应用。所有这三种化合物都在地表水样本中检测到（N= 34）; N-环丙基-4-氨磺酰基苯甲酰胺最常检测到（56%），其次是环丙磺酰胺（25%）和环丙磺酰胺去甲基化物（19%）。最大浓度范围为22.0 - 5185.9纳克/升，生长季节的浓度和检出率最高。在地下水中未检测到我们的目标分析物。
Herbicide safeners are commonly included in herbicide formulations to selectively protect crops from herbicide toxicity but are poorly understood in terms of their environmental occurrence and fate. This study established an analytical method for a newer safener, cyprosulfamide, and two of its degradates, cyprosulfamide desmethyl andN-cyclopropyl-4-sulfamoylbenzamide, in water via solid-phase extraction and liquid chromatography with tandem mass spectroscopy. To evaluate the potential for off-field transport and transformation of cyprosulfamide, the method was used to analyze groundwater and surface water samples collected near cornfields in the midwestern United States where cyprosulfamide had been applied. All three compounds were detected in surface water samples (N= 34);N-cyclopropyl-4-sulfamoylbenzamide was most frequently detected (56%), followed by cyprosulfamide (25%) and cyprosulfamide desmethyl (19%). Maximum concentrations ranged from 22.0 to 5185.9 ng/L, with the highest concentrations and detection rates during the growing season. None of our target analytes were detected in groundwater.