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5.1x00a0;This test method has been developed by the US EPA Region 5 Chicago Regional Laboratory (CRL).
5.2x00a0;PFCs are widely used in various industrial and commercial products; they are persistent, bio-accumulative, and ubiquitous in the environment. PFCs have been reported to exhibit developmental toxicity, hepatotoxicity, immunotoxicity, and hormone disturbance. A draft Toxicological Profile for Perfluoroalkyls from the U.S. Department of Health and Human Services is available.7 PFCs have been detected in soils, sludges, surface and drinking waters. Hence, there is a need for quick, easy, and robust method to determine these compounds at trace levels in various soil matrices for understanding of the sources and pathways of exposure.
5.3x00a0;This method has been used to determine selected perfluorinated compounds in sand (Table 4) and four ASTM reference soils (Table 5).
1.1x00a0;This procedure covers the determination of selected perfluorinated compounds (PFCs) in a soil matrix using solvent extraction, filtration, followed by liquid chromatography (LC) and detection with tandem mass spectrometry (MS/MS). These analytes are qualitatively and quantitatively determined by this method. This method adheres to multiple reaction monitoring (MRM) mass spectrometry. This procedure utilizes a quick extraction and is not intended to generate an exhaustive accounting of the content of PFCs in difficult soil matrices. An exhaustive extraction procedure for polyfluoralkyl substances, such as published by Washington et al.2, for difficult matrices should be considered when analyzing PFCs.
1.2x00a0;Unitsx2014;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3x00a0;The Method of Detection Limit3 and Reporting Range4 for the target analytes are listed in Table 1.
1.3.1x00a0;The reporting limit in this test method is the minimum value below which data are documented as non-detects. Analyte detections between the method detection limit and the reporting limit are estimated concentrations and are not reported following this test method. In most cases, the reporting limit is calculated from the concentration of the Level 1 calibration standard as shown in Table 2 for the perfluorinated compounds after taking into account a 2 g sample weight and a final extract volume of 10 mL, 508201;% water/508201;% MeOH with 0.18201;% acetic acid. The final extract volume is assumed to be 10 mL because 10 mL ......
然而,这些检测方法都有一个灵敏度低的缺点。串联液相色谱 - 质谱联用(LC/MS/MS)具有高选择性与灵敏度,因此,是测定生物和环境样品中全氟烷基表面活性剂含量的最常用的分析方法。13 在液相色谱 - 质谱 / 质谱联用(LC/MS/MS)分析之前实施固相萃取(SPE)程序是从水性环境基质中提取全氟烷基表面活性 剂 的 最 常 用 方 法 之 一。...
相关标准目前涉及PFAS的检测标准很多,主要有美国国家环境保护局(U.S.EPA)的Method 537.1和ASTMD 7979-17、欧盟的《欧盟水框架指令》、中国国标《GB5749-2006生活饮用水卫生标准》、《DB32/T4004-2021 水中17种全氟化合物的测定高效液相色谱串联质谱法》、《GB/T23243-2009 食品包装材料中全氟辛烷磺酰基化合物(PFOS)的测高效液相色谱-串联质谱法...
本实验参考《超高效液相色谱-新型串联四极杆质谱法测定环境水体与土壤中的全氟辛酸和全氟辛烷磺酸》,利用莱伯泰科SPE 1000全自动固相萃取系统和MultiVap-10定量平行浓缩仪进行相关方法研究。 ...
前言 近年来,全氟化合物的毒性检测研究已成为众多科研工作者关注的热点,欧盟、美国、加拿大相继出台了一系列环境中全氟化合物的检测标准。2022年2月,国务院发布第三次全国土壤普查文件,全氟化合物纳入本次普查监管范畴。 本文使用谱育科技 EXPEC 5210 超高效液相色谱-三重四极杆串联质谱仪(LC-MS/MS),建立了土壤中全氟辛磺酸和全氟辛酸的残留量检测方法。...
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