Summary Semi-volatile organic compounds (SVOCs) have high molecular weight and boiling point, and SVOCs are not volatile, mainly composed of pesticides and herbicides. These compounds are exposed for a long time, and in the indoor environment, there will be a large environmental hazard, leading to public health and health hazards. Therefore, they are classified as harmful air pollutants (HAPs) by the US EPA, which can cause allergies, asthma, endocrine and thyroid damage, reproductive toxicity, fetal and child stunting, and even cancer. Soil is the most important substrate for these compounds. How to extract these compounds from the soil is a complicated process. CEM's revolutionary EDGE TM extraction system quickly extracts SVOCs from the soil at a rate six times faster than other automation technologies. The patented Q-Cup TechnologyTM extracts analytes from complex samples simply, quickly and efficiently, and EDGE has built-in standard procedures in accordance with EPA 3545 experimental methods. Introduction The soil matrix is ​​a complex sample containing multiple components. SVOCs include a variety of compounds with a wide range of chemical and structural properties, and their diversity will increase the difficulty of the extraction process, which is a huge challenge for extraction technology. Traditional methods such as Soxhlet extraction are very time consuming and require the use of large amounts of solvent. Automated methods often require cumbersome sample preparation processes. EDGE is the fastest sample extraction system currently available, with sample extraction using a small amount of solvent. The Q-Cup rack is made up of two easy-to-assemble parts that are ready to be sampled in seconds. Semi-volatile organic compounds (SVOCs) are not volatile. These compounds are exposed over time and leave a lot of environmental hazards. In order to ensure human safety, these harmful compounds need to be extracted, identified and quantified. The accurate analysis of SVOCs depends entirely on For efficient extraction pretreatment technology. The patented Q-Cup TechnologyTM makes it easy, fast and efficient to extract analytes from complex samples, complete filtration, cooling and analytical preparation of the extracted products in 5 minutes. EDGE has built-in standard procedures in accordance with EPA 3545 experimental methods. It can quickly and efficiently extract water-insoluble/slightly water-soluble volatile compounds and semi-volatile compounds in soil, clay, sediment, sludge and solid waste. Instrument use CEM Corporation of the United States invented EDGE's revolutionary extraction technology, which combines pressurized fluid extraction and solid-phase discrete extraction. The fully automated process includes reagent addition, extraction, filtration, cooling and separation processes with high extraction efficiency and good repeatability. Q-Cup TM's unique open cell design combines the dual effects of solid phase discrete extraction on the basis of pressure flow extraction. The dynamic pressure oscillation in the process forces the reagent to circulate in both directions, which improves the compound precipitation efficiency and enables rapid extraction of a large number of samples. filter. EDGE makes sample preparation very easy, the Q-Disc TM filter is placed on the bottom of the Q-Cup and the bottom cover is screwed. 1-30 g of soil sample can be quickly extracted, and sample drying can be carried out by adding NaSO 4 if necessary. EDGE extracts reactions using only 40 mL of solvent, including discrete extraction with dynamic pressure oscillations, sample infiltration, and system cleaning. The working chamber is heated quickly and the temperature can reach 180 °C in 2 minutes. working principle: 1, automatic sample loading The autosampler loads the Q-Cup into the working chamber and automatically caps the pressurized seal. 2, two-way automatic solvent addition The solvent was automatically added bi-directionally from the bottom and top of the Q-Cup to infiltrate the sample. 3, automatic heating and two-way sample extraction chamber Automatic heating increases the working chamber extraction pressure and creates a two-way reagent cycle that forces the solvent and sample to create discrete effects, accelerates the extraction process, and completes the extraction conditions. 4, automatic extract extraction Once the extraction is completed, the online automatic filtration purification, the extraction residue and the extract directly separated, the sample will be filtered through the Q-Cup filter, through the cooling coil, and finally into the collection bottle. 5, automatic cleaning function The residue is directly separated from the extract and automatically filtered and collected, and the instrument is automatically cleaned. ,  Process and method 250 μl of the furnish solution was added to 10 g of sand, loam and clay, respectively, and placed in a Q-Cup containing a Q-Disc filter. Prepare 10g of CRM110-100 (Sigma Sigma Aldrich). Place the Q-Cups on the EDGE mobile stand with the stand next to the EDGE and a collection bottle next to each stand. The experiment follows the EPA 3545 one-button method of operation. The extract was injected into the Agilent 7890 A - 5975C MSD and the analytical method was in accordance with EPA 8270. The column was selected from the Philomon ZB-5MSplus, 30m/0.25mm. sample SPEX CertiPrep TCLP base/neutral/acid extractable furnish solution was added to sand, loam and clay, respectively, and then added to methylene chloride, where sand, loam and clay were purchased from Sigma Aldrich; SPEX CertiPrep TCLP The solution number is TCLP-BNA. CRM110-100 was purchased from Sigma Aldrich. CRM and ingredient samples were obtained by EDGE and Soxhlet extraction. A 50/50 acetone/hexane mixture was used as the extraction solvent and cleaning solution. Results and discussion EDGE extracts sand, loam and clay samples in 5 minutes, including filtration, cooling and system cleaning. The extract was directly injected into the GC-MS for analysis. The average recovery of soil samples from the three ingredients was comparable to that obtained by Soxhlet extraction. Table 1 shows the recovery of semi-volatile organic compounds (SVOCs) extracted from sand/clay/loam furnish samples. Table 2 shows the recovery of CRM 110 - 100 extracted from the extract. Table 1 Recovery of semi-volatile organic compounds (SVOCs) extracted from sand/clay/loam furnish samples Analyte/test substance sand Clay Loam 1,4-dichlorobenzene 94 98 93 Hexachloroethane 91 94 88 P-methylphenol 82 91 85 Nitrobenzene 86 101 95 Hexachlorobutadiene 94 97 89 2,4,5-trichloro(phenyl)phenol 87 76 81 2,4,6-trichloro(phenyl)phenol 92 73 86 2,4-dinitrotoluene 85 85 86 Hexachlorobenzene 86 84 82 Table 2 Recovery of CRM 110 - 100 extracted from the extract Component % Nitroaniline 94 2,4-dinitrotoluene 114 Dibenzofuran 92 芴 105 Freeze-dried powder is a sterile powder injection obtained by freezing the liquid medicine into a solid state in a sterile environment, and subliming and drying the water in a vacuum. Freeze-dried powder is composed of a bottle of high-purity and high-active biological protein freeze-dried powder and a high-purity liquid essence. 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Figure 1 EDGE pressure dynamic extraction + solid state discrete extraction