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Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
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杀虫剂的脉冲光处理会导致化合物的高降解和毒性降低.

François Clavero1, Jérôme Cachot2, Christelle Clérandeau2

  • 1Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, UMR 1366, ŒNO, ISVV, Villenave d'Ornon, F-33140, France; SANODEV, Limoges, F-87000, France.

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概括

脉冲光 (PL) 技术有效降解了18种常见的葡萄种植农药,显著降低了度和急性水生毒性. 这一过程还能分解农药的副产品,提供了一个有前途的环境解决方案.

关键词:
藻类藻类是一种藻类.细菌 细菌是一种细菌.鱼类 鱼类 鱼类 鱼类惠普LC-MS/MS, 摄影产品, 生态毒性植物卫生产品 植物卫生产品

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科学领域:

  • 环境科学 环境科学
  • 摄影化学的使用.
  • 生态毒理学 生态毒理学

背景情况:

  • 葡萄种植中的农药污染对生态系统构成风险.
  • 脉冲光 (PL) 是一种新兴的有机化合物降解技术.
  • 评估PL对农药混合物的有效性对于环境安全至关重要.

研究的目的:

  • 评估脉冲光对18种常见的葡萄种植农药的化学和生态毒理影响.
  • 量化农药降解和识别在PL处理过程中形成的副产品.
  • 评估对水生生物的急性毒性降低.

主要方法:

  • 高性能液体染色学-并联质谱学 (HPLC-MS/MS) 用于农药和副产品分析.
  • 在特定的能量剂量和持续时间下,对农药混合物施加脉冲光处理.
  • 使用Aliivibrio fischeri (细菌),Raphidocelis subcapitata (微藻) 和Oryzias latipes (鱼) 的生态毒理分析.

主要成果:

  • 该公司将18种农药从304-561微克/升降至<30微克/升,其中10种低于检测限值.
  • 狄米索摩夫的降解程度最低 (93.5%的降解),并确定了42种降解产物.
  • PL治疗显著降低了急性毒性:细菌的2倍,微藻的24倍,鱼类的死亡率从100%降至6.6%.
  • 在鱼类中观察到亚致命效应 (骨变形),表明残留化合物的潜在风险.

结论:

  • 脉冲光是一种高效的技术,用于降解广泛的葡萄种植农药.
  • PL处理大大降低了农药混合物对水生生态系统的急性毒性.
  • 需要进一步的研究来解决潜在的次致命效应,并优化PL以实现完全的解毒.