PMID- 24558844 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150708 LR - 20190923 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 31 IP - 11 DP - 2013 Nov TI - [Determination of 21 phenolic compounds in soil by ultrasonic extraction-gas chromatography]. PG - 1081-6 AB - An effective method was developed to determine phenolic compounds in soil by ultrasonic extraction-gas chromatography (GC). The soil sample was extracted with methylene dichloride-hexane (2:1, v/v) for 3 min with the extraction temperature lower than 50 degrees C for 3 times. The extract was purified by alkaline aqueous solution (pH > 12), and the phenolic compounds were dissolved in aqueous solution. After the organic solution was discarded, the aqueous solution was adjusted to pH <3 and subsequently extracted with methylene dichloride-ethyl acetate (4:1, v/v) twice. The analytes were determined by GC-FID and quantified by external standard method. The limits of quantification for all tested phenolic compounds were 0.01-0.06 mg/kg in about 10 g soil samples. The recoveries were between 62.9% and 111.4% with the relative standard deviations (RSDs) in the range of 4.3%-24.0% (n = 6). The results showed that this method is sensitive, accurate, and suitable for the determination of the 21 phenolic compounds in soil. FAU - Yang, Lili AU - Yang L AD - Nanjing Environmental Monitoring Center, Nanjing 210013, China. yllyj@126.com FAU - Wang, Meifei AU - Wang M AD - Nanjing Environmental Monitoring Center, Nanjing 210013, China. FAU - Hu, Enyu AU - Hu E AD - Nanjing Environmental Monitoring Center, Nanjing 210013, China. FAU - Liu, Jing AU - Liu J AD - Nanjing Environmental Monitoring Center, Nanjing 210013, China. FAU - Wu, Lijuan AU - Wu L AD - Nanjing Environmental Monitoring Center, Nanjing 210013, China. LA - chi PT - English Abstract PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 EDAT- 2014/02/25 06:00 MHDA- 2014/02/25 06:01 CRDT- 2014/02/25 06:00 PHST- 2014/02/25 06:00 [entrez] PHST- 2014/02/25 06:00 [pubmed] PHST- 2014/02/25 06:01 [medline] AID - 10.3724/sp.j.1123.2013.05005 [doi] PST - ppublish SO - Se Pu. 2013 Nov;31(11):1081-6. doi: 10.3724/sp.j.1123.2013.05005.