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 柱提取饮用水样品中的 PFAS。
US EPA changes PFAS rule after signingdoi:10.1021/cen-09831-polcon4Britt E. EricksonChemical & Engineering News
The EPA estimates that between about 6% and 10% of the 66,000 public drinking water systems subject to the new PFAS rule may have to take action to reduce chemicals to meet the new standards. Public water systems have three years to complete their initial monitoring for these chemicals. P...
EPA Requires Toxics Release Inventory Reporting for Seven Additional PFAS by EditorFebruary 21, 2024Continue Reading Bags Plastic Bans US Waste & Waste Management Plastic Bag Ban Made Pollution Worse in California by EditorFebruary 19, 2024Continue Reading M&A, Corporate and Financial News R&D and...
喝开水,真的有用 | 分享一篇和日常生活高度相关的一篇科研文章。该文10月发表在 ACS ES and T Water. 该文研究了影响饮用水中全氟和多氟烷基物质(PFAS)浓度的因素,并评估了人类的暴露风险。 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(...
“the levels at which negative health outcomes could occur are much lower than previously understood,” and finalized health advisories for two other PFAS [168]. In March 2023, EPA issued long-awaited draft MCLs of 4 ng/L for both PFOA and PFOS (individually), reflecting the “lowest ...
In March, the EPA also proposed for the first time a set of national standards for some per- and polyfluorinated substances (PFAS), known as "forever chemicals" because of the significant amount of time it takes for them to break down. In July, astudy foundalmost half of the United State...
The EPA stated that two of Wellmark's fly control products were either misbranded with labels that did not include required cautionary language or were distributed in conjunction with claims that differed from the pesticide registration information supplied to the EPA. Regulations stipulated that the ...
Regulatory requirements for utilities continue to increase due to rising enforcement of long-standing requirements and the creation of new requirements. The EPA announced two actions in February 2021 to address levels of polyfluoroalkyl substances (PFAS)—a family of human-made chemicals use...
New EPA Hazardous Waste Regulations Coming Soon! Bioremediation Is An Effective Method Of Remediating Groundwater Impacts REAL ESTATE REUSE AND REDEVELOPMENT SERVICES EWMA Assists Redevelopment Of Brownfield Sites Through NYC OER’S VCP Administrative Assistant ...