PMID- 30693707 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20190129 LR - 20190129 IS - 1872-2059 (Electronic) IS - 1000-8713 (Linking) VI - 37 IP - 1 DP - 2019 Jan 8 TI - [Determination of 10 perfluorinated carboxylic acid compounds in water by gas chromatography-mass spectrometry coupled with negative chemical ionization]. PG - 32-39 LID - 10.3724/SP.J.1123.2018.07019 [doi] AB - A method was developed for the simultaneous determination of 10 perfluorinated carboxylic acid compounds in water by gas chromatography-mass spectrometry coupled with negative chemical ionization (GC-NCI-MS). Perfluorinated carboxylic acid compounds were derivatized by trifluoro-N-methyl-N-(trimethylsilyl) acetamide (MSTFA) as the trimethylsilyl derivatization reagent. The water sample was purified and enriched through a weak anion exchange solid phase extraction column and analyzed via GC-NCI-MS. The sample pretreatment, derivation and instrument conditions were optimized. The results showed that the linearity of the 10 perfluorinated carboxylic acid compounds was good in the range of 0.1-10 mg/L with correlation coefficients of 0.9956-0.9993. The limits of detection (LODs) and limits of quantification (LOQs) were 0.5-1.5 mug/L and 1.5-4.5 mug/L, respectively. The spiked recoveries of the blank samples ranged from 70.2% to 112.6% with the relative standard deviations (RSDs) between 2.1% and 14.5% (n=6). The method is simple, sensitive, accurate and precise, and can be used to detect the 10 perfluorinated carboxylic acid compounds in water. FAU - Wang, Xiaoyan AU - Wang X AD - College of Pharmacy, Chian Pharmaceutical University, Nanjing 210009, China. FAU - Shen, Weijian AU - Shen W AD - Animal, Plant and Food Inspection Center, Nanjing Customs, Nanjing 210009, China. FAU - Wang, Hong AU - Wang H AD - Animal, Plant and Food Inspection Center, Nanjing Customs, Nanjing 210009, China. FAU - Yu, Keyao AU - Yu K AD - Animal, Plant and Food Inspection Center, Nanjing Customs, Nanjing 210009, China. FAU - Wu, Bin AU - Wu B AD - Animal, Plant and Food Inspection Center, Nanjing Customs, Nanjing 210009, China. FAU - Hu, Guoshen AU - Hu G AD - Animal, Plant and Food Inspection Center, Nanjing Customs, Nanjing 210009, China. FAU - Yang, Gongjun AU - Yang G AD - College of Pharmacy, Chian Pharmaceutical University, Nanjing 210009, China. LA - chi PT - English Abstract PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 OTO - NOTNLM OT - gas chromatography-mass spectrometry (GC-MS) OT - negative chemical ionization (NCI) OT - perfluorinated carboxylic acid compounds OT - solid phase extraction (SPE) OT - water EDAT- 2019/01/30 06:00 MHDA- 2019/01/30 06:01 CRDT- 2019/01/30 06:00 PHST- 2019/01/30 06:00 [entrez] PHST- 2019/01/30 06:00 [pubmed] PHST- 2019/01/30 06:01 [medline] AID - 10.3724/SP.J.1123.2018.07019 [doi] PST - ppublish SO - Se Pu. 2019 Jan 8;37(1):32-39. doi: 10.3724/SP.J.1123.2018.07019.