The Biden administration finalized strict limits on certain so-called “forever chemicals” in drinking water. Officials say it could benefit millions.
然而,与欧美等国家相比,我国PFAS的标准化检测技术尚待成熟,可检测的PFAS种类有待进一步拓展。 EPA在测试方法8327中详细规定了使用多反应监测(MRM)液相色谱串联质谱法检测包括PFOS和PFOA在内的24种化合物的标准方法。在饮用水检测中,EPA方法537.1被用于检测18...
Published on July 28, 2023iClean Water Act,Hazardous Substances Remediation,Stormwater The Environmental Protection Agency (EPA)’s efforts to address contamination by per- and poly-fluoroalkyl substances (PFAS) continue to rapidly evolve. Although federal efforts were initially focused on PFAS in ...
饮用水:根据 EPA 方法 533 分析新型 PFAS US EPA 方法 533 是一种固相萃取 (SPE) 液相色谱/串联质谱 (LC/MS/MS) 方法,用于测定饮用水中的 25 种目标 PFAS。多反应监测 (MRM) 可用于提高选择性,可通过同位素稀释进行定量。方法 533 可解决 EPA 方法 537 和537.1中更具挑战性的 C4 和 C5 酸及磺酸盐。
On April 10, 2024, the U.S. Environmental Protection Agency ("EPA") announced its highly anticipated final National Drinking Water Regulation ("NPDWR") for six per-and polyfluoroalkyl substances ("PFAS"), which establishes legally enforceable Maximum
The establishment of enforceable PFAS MCLs is a monumental achievement that highlights the commitment to safeguarding public health through water treatment. By setting these standards, the EPA is taking decisive action to address the presence of PFAS in drinking water and expects this rule will p...
This brief demonstrates the extraction and analysis of 25 PFAS compounds from water samples using Oasis WAX for PFAS SPE cartridges, according to EPA 533 methodology. Related Content Automated PFAS Extraction from Difficult Food and Food Packaging Samples CEM Corporation December 6th 2024 Article More ...
Sep-Pak PS2小柱直接等效于EPA 537.1方法要求的SDVB固定相。证明PS2能够以EPA方法要求的精密度和准确度可靠地萃取饮用水样品中的PFAS,所有规定的PFAS回收率均在80~120%范围内,且重复萃取的%RSD低于16%。使用该方法能够对自来水和瓶装饮用水中的一系列...
The White House Office of Management & Budget (OMB) has begun review of EPA's much-anticipated, first-ever rule to set enforceable Safe Drinking Water Act (SDWA) limits for PFAS, expected to cover six of the chemicals, although it is questionable whether OMB can complete its review in ...
图2. EPA NPDWR (The National Primary Drinking Water Regulations ) 对PFAS的限值要求 通常,RO膜比NF膜表现出更高的污染物去除率,而NF膜在能耗上具有更大的优势。因此,为了比较不同类型分离膜对PFAS的去除效果,美国海德能技术团队对以下四种膜元件进行了中试试验和PFAS去除效果验证。