饮用水:根据 EPA 方法 537.1,满足 PFAS 分析的法规要求 US EPA 方法 537.1 是一种固相萃取 (SPE) 液相色谱/串联质谱 (LC/MS/MS) 方法,用于分析饮用水中的 18 种选定 PFAS,包括 PFOS 和 PFOA。多反应监测 (MRM) 可用于提高选择性,定量依赖于内标校正。该方法使用 Agilent Bond Elut LMS SPE 柱提取饮用水...
US EPA changes PFAS rule after signingdoi:10.1021/cen-09831-polcon4Britt E. EricksonChemical & Engineering News
“Our PFAS Strategic Roadmap marshals the full breadth of EPA’s authority and resources to protect people from these harmful forever chemicals,” announced EPA Administrator Michael Regan, in a statement to media. “Today, I am proud to finalize this critical piece of our Roadmap, and in ...
Under the US Safe Drinking Water Act (SDWA) [3], the US Environmental Protection Agency (EPA) sets legal limits for contaminants in public drinking water known as the Maximum Contaminant Level (MCL). For each regulated contaminant, EPA sets a health-based Maximum Contaminant Level Goal (MCLG)...
(MCL) allowed by the EPA regulations9, which was then used to reconstitute PXVX0200 buffer and active components. For example, the MCL for copper is 1.3 mg/L so for these studies copper was spiked into the MBGW to a create a solution with the final concentration of 13 mg/L copper. ...
Dear Mr. Bushman: The undersigned Associations submit these comments to the U.S. Environmental Protection Agency (“EPA” or “Agency”) as it considers proposing a future rule to add certain per- and polyfluoroalkyl substances (“PFAS”) to the Toxics
US EPA 方法 8327 是一种液相色谱/串联质谱 (LC/MS/MS) 稀释-上样方法,用于非饮用水(包括地表水、地下水和废水)中 24 种 PFAS 的快速分析,且与ASTM 方法 D7979遵循同一法规。使用多反应监测 (MRM) 模式增强选择性,并通过外部校准进行定量。 安捷伦样品前处理系统、备件和可靠的三重四极杆 LC/MS 仪器具备...
结果显示,八氟辛酸和八氟辛烷磺酸(PFOS)是最常见的PFAS。中国自来水中的PFAS浓度显著高于英国,超过了美国环境保护署(USEPA)在2024年设定的PFOS(全氟辛烷磺酸)的最大污染物水平(MCL)值4 ng/L。具体来说,中国自来水中PFOS的浓度为4.3 ± 0.68 ng/L。
A recent EPA rule requires the reporting to begin for releases in the 2021 calendar year. The chemicals are members of the family of per- and polyfluoroalkyl substances (PFAS), which are environmentally persistent and linked to multiple adverse health effects. The agency added them to the ...
EPA to Convene National Leadership Summit to Take Action on PFAS | US EPAUS EPA,OA,OEAEE,OMR