| Title: | Development and validation of an improved QuEChERS method for the extraction of semi-volatile organic compounds (SVOCs) from complex soils |
| Author(s): | Lou H; Wang F; Zhao H; Wang S; Xiao X; Yang Y; Wang X; |
| Address: | "Environmental Testing and Experiment Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. x.w.wang@outlook.com. School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China. School of Environmental Science and Engineering, Qilu University of Technology, Jinan 250353, China" |
| ISSN/ISBN: | 1759-9679 (Electronic) 1759-9660 (Linking) |
| Abstract: | "In order to achieve rapid, sensitive, and high-throughput determination of typical semi-volatile organic compounds (SVOCs) in soil samples, a method for the rapid determination of 63 SVOCs in soil was developed by optimizing and improving the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) extraction technique in conjunction with gas chromatography-mass spectrometry (GC-MS) analysis. A small amount of soil sample (5.0 g) was vortexed with 10 mL of a mixture of acetone and n-hexane (V/V = 1 : 1) for 2 min, followed by rapid vortex purification and centrifugation using a mixture of copper powder and octadecylsilane (C18) dispersant. The resulting supernatant was then purified through a 0.22 mum filter membrane. The results showed that the 63 SVOCs exhibited good linear relationships within the concentration range of 100-5000 mug L(-1), with correlation coefficients (R(2)) above 0.99. The method detection limit (MDL = 3.3 Sy/m) was lower than 0.050 mg kg(-1). At a spike concentration of 1 mg kg(-1), the recovery rates of the 63 SVOCs were almost above 70% (n = 7). Compared with the rapid solvent extraction (ASE) method specified in US EPA 3545 standard, this method reduced the organic solvent usage by 14 times and significantly shortened the operation time. Furthermore, this method did not involve any transfer or concentration steps of the extractant during the experimental process, reducing the exposure time of toxic compounds and providing support for the principles of green analytical chemistry. Moreover, in the detection of most compounds in the same batch of contaminated soil, the extraction results obtained by QuEChERS were superior to those obtained by the ASE method, providing evidence for the practical application of this method. This method is rapid, simple, accurate, requires a small sample volume, and causes minimal environmental pollution. It provides a high-throughput detection method for the rapid screening of SVOCs in soil" |
| Notes: | "PubMed-not-MEDLINELou, Hongbo Wang, Fujia Zhao, Hangchen Wang, Sufang Xiao, Xinxin Yang, Yanmei Wang, Xiaowei eng England 2023/09/12 Anal Methods. 2023 Sep 21; 15(36):4767-4776. doi: 10.1039/d3ay01326j" |
