Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
ASTM D7968-17a
Năm ban hành 2017
Publication date
Tình trạng
A - Còn hiệu lực
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Tên tiếng Anh
Title in English Standard Test Method for Determination of Polyfluorinated Compounds in Soil by Liquid Chromatography Tandem Mass Spectrometry (LC/MS/MS)
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Chỉ số phân loại Quốc tế (ICS)
By field |
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Số trang
Page 24
Giá:
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Phạm vi áp dụng
Scope of standard 1.1 This procedure covers the determination of selected polyfluorinated 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. 1.2 Units-The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 The Method of Detection Limit3 and Reporting Range4 for the target analytes are listed in Table 1. Analyte MDL (ng/kg) Reporting Limit (ng/kg) PFTreA 6.76 25-1000 PFTriA 5.26 25-1000 PFDoA 3.56 25-1000 PFUnA 2.45 25-1000 PFDA 5.54 25-1000 PFOS 18.83 50-1000 PFNA 2.82 25-1000 PFecHS 2.41 25-1000 PFOA 6.24 25-1000 PFHxS 7.75 25-1000 PFHpA 5.80 25-1000 PFHxA 15.44 50-1000 PFBS 6.49 25-1000 PFPeA 20.93 125-5000 PFBA 22.01 125-5000 FHEA 199.04 600-20 000 FOEA 258.37 750-20 000 FDEA 137.46 500-20 000 FOUEA 4.85 25-1000 FhpPa 5.09 25-1000 FHUEA 3.50 25-1000(A) Abbreviations are defined in 3.2. Analyte/Surrogate LV1 LV2 LV3 LV4 LV5 LV6 LV7 LV8 LV9 PFPeA, PFBA 25 50 100 200 300 400 500 750 1000 PFTreA, PFTriA, PFDoA, PFUnA, PFDA, PFOS, PFNA, PFHxA, PFHpA, PFBS, PFechS, PFOA, PFHxS, FOUEA, FHUEA, FHpPA, MPFBS, MPFHxA, MPFUnA, MPFOA, MPFDA, MPFOS, MPFNA, MPFHxS, MPFBA 5 10 20 40 60 80 100 150 200 FHEA, FOEA, FDEA 100 200 400 800 1200 1600 2000 3000 4000
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