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...
Exposure science plays a critical role in the US EPA's research program because the complexity of PFAS chemistry and use leads to a multitude of possible exposure pathways and both human and ecological receptors. Understanding exposure is key to identifying the key risk ...
“PFAS are persistent, bioaccumulative, and of concern globally, with several countries looking to regulate them in water and soil. As a market leader in environmental analysis, Agilent is pleased to offer our customers a solution to achieve EPA Method 1633 performance requirements confidently,” exp...
The production of LCPFACs was ceased after 2015 and it is unlikely to have a huge quantity imported to the US. Other regions such as European Union already restricts certain PFAS substances. US EPA3believes that the likelihood of submitt...
5 Studies indicate that PFAS can have serious health effects in laboratory animals.6 In December 2020, the EPA finalized its revised Lead and Copper Rule.7 Additionally, dozens of municipalities are executing long-running programs to address combined-sewer overflows following noncompliance ...
“Small systems often need technologies that are more simple to operate,” said Jonathan Pressman, engineer and EPA water researcher. The agency offers technical assistance to states and communities and it recently made $2 billion available to states for contaminants like PFAS. Inside the EPA’s ...
Exposure to PFAS is associated with reproductive and developmental effects, certain cancers, liver harm and hormone disruption. The paper notes that in 2023, the EPA proposed to set the maximum allowable level for six PFAS at zero parts per trillion, highlighting the toxicity of these and the go...
A summary of EPA’s Non-Targeted Analysis Collaborative Trial (ENTACT) is also given, which makes direct use of ORD resources to benefit the global NTA research community. Finally, a research framework is described that shows how NTA methods will bridge chemical prioritization efforts within ORD....
11 The EPA recommends conducting these tests at least once a year.12 You should also ask your health department what contaminants are common in the local groundwater. States may have regulations in place dictating what makes water safe to drink, but it’s the responsibility of the property ...
observed. Our results support previous findings that great tits and blue tits may not be very susceptible to PFAS pollution and provide evidence that other factors, including ecological stoichiometry, may be more important in explaining inter-species variation in PFAS accumulation and reproductive ...