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...
US EPA 方法草案 1633 是一种经过实验室验证的方法,用于检测废水、地表水、地下水、土壤、生物固体、沉积物、垃圾渗滤液和鱼组织中九个化合物类别共 40 种 PFAS 化合物(包括直链和支链异构体)。除一些新的 PFAS 种类以外,还包括 EPA 饮用水方法 533 和 537.1 中列出的所有分析物。该方法是一种稳定的标...
一些州也在为其他PFAS含量制定了标准。 研究人员确定了影响指导含量水平制定的多种科学因素,包括毒理学指标的选择和饮用水消耗的假设。社会、经济和政治压力都影响到各州制定准则,例如对社会关注的反应或污染事件的发生。 Cordner 解释说:“多个州和学术科学家的评估表明,EPA对饮用水的健康建议没有足够的保护作用。”先...
EPA Sets Strict Limit on PFAS 'Forever Chemicals' in U.S. Drinking Water HealthDayApril 10, 2024 CDC Warns of Potentially Fatal Bacterial Illness on U.S. Gulf Coast HealthDayDec. 23, 2023 Warming Climate Could Bring Flesh-Eating Bacteria to More U.S. Waters ...
(观察者网讯)日内瓦当地时间2月21日,来自联合国人权理事会的特别调查员们表示,美国杜邦和科慕化学公司几十年来一直向当地环境排放有毒全氟烷基物质和多氟烷基物质(PFAS),污染了当地饮用水供应,完全无视北卡罗来纳州开普菲尔河几十万下游居民的权利和福祉。
In response to the growing problem of drinking water contaminated with per- and poly-fluoroalkyl substances (PFAS), a new analysis shows that many states are establishing their own guideline levels for two types of PFAS—PFOA and PFOS—that differ from f
But Andrews used negative language to describe the chemicals. “Everyone’s really exposed to a toxic soup of these PFAS chemicals,” he said. The United States Environmental Protection Agency, or EPA, has known since at least 20...
EPA to Convene National Leadership Summit to Take Action on PFAS | US EPAUS EPA,OA,OEAEE,OMR
Nearly all Americans have PFAS in their bloodstream. Thetoxic chemicalsare found in an enormous range of goods from dental floss to waterproof clothing. The chemicals are also a threat to wildlife. "EPA's proposal to establish a national standard for PFAS in drinkingwateris informed by the best...
The consultant looked at federal and state test results and estimated that 4% to 12% of water providers nationally will need to treat for PFAS due to the EPA rule. Smaller, poorer communities will have a harder time affording the new systems and training staff on how to use them...