ASTM D8018-2015
使用多反应监测液相色谱/质谱法 (LC/MS/MS) 测定土壤中三丁基十四烷基氯化磷 (TTPC) 的标准试验方法

Standard Test Method for Determination of (Tri-n-butyl)-n-tetradecylphosphonium chloride (TTPC) in Soil by Multiple Reaction Monitoring Liquid Chromatography/Mass Spectrometry (LC/MS/MS)

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标准号

ASTM D8018-2015

发布日期

2015年

实施日期

废止日期

无

发布单位

US-ASTM

适用范围

5.1x00a0;This test method has been developed by the US EPA Region 5 Chicago Regional Laboratory (CRL).

5.2x00a0;TTPC may be used in various industrial and commercial products for use as a biocide. Products containing TTPC have been approved for controlling algal, bacterial, and fungal slimes in industrial water systems.2 TTPC should not be persistent in water but may be deposited in sediments at concentrations of concern. Hence, there is a need for quick, easy, and robust method to determine TTPC concentration at trace levels in various soil matrices for understanding the sources and concentration levels in affected soils and sediments.

5.3x00a0;This method has been used to determine TTPC in sand, a commercial top soil and four ASTM reference soils (Table 4).

1.1x00a0;This procedure covers the determination of (Tri-n-butyl)-n-tetradecylphosphonium chloride (TTPC) in a soil matrix by extraction with acetone, filtration, dilution with water, and analysis by liquid chromatography/tandem mass spectrometry. TTPC is a biocide that strongly adsorbs to soils.2 The sample extracts are prepared in a solution of 758201;% acetone and 258201;% water because TTPC has an affinity for surfaces and particles. The reporting range for this method is from 250 to 108201;000 ng/kg. This analyte is qualitatively and quantitatively determine by this method. This method adheres to multiple reaction monitoring (MRM) mass spectrometry.

1.2x00a0;The Method Detection Limit (Note 1) (MDL) and Reporting Range (Note 2) for the target analyte are listed in Table 1.

(A)x00a0;Acronyms are defined in 3.3.

Note 1:x00a0;The MDL is determined following the Code of Federal Regulations, 40 CFR Part 136, Appendix B, as a guide utilizing solvent extraction of soil. Two-gram sample of Ottawa Sand was utilized. A detailed process determining the MDL is explained in the reference and is beyond the scope of this standard to be explained here.

Note 2:x00a0;Reporting range concentration is calculated from Table 2 concentrations assuming a 50 x03bc;L injection of the Level 1 calibration standard for TTPC, and the highest level calibration standard with a 20 mL final extract volume of a 2 g soil sample. Volume variations will change the reporting limit and ranges.

1.2.1x00a0;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 rep......

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