PMID- 37410937 OWN - NLM STAT- MEDLINE DCOM- 20230814 LR - 20230814 IS - 1944-0057 (Electronic) IS - 1944-0057 (Linking) VI - 40 IP - 8 DP - 2023 Aug TI - Simultaneous determination of cyanide and thiocyanate in milk by GC-MS/MS using cetyltrimethylammonium bromide as both phase transfer catalyst and protein precipitant. PG - 1025-1034 LID - 10.1080/19440049.2023.2227742 [doi] AB - A method was developed for simultaneous determination of cyanide and thiocyanate in milk by gas chromatography-tandem quadrupole mass spectrometry (GC-MS/MS). Cyanide and thiocyanate were derivatized with pentafluorobenzyl bromide (PFBBr) as PFB-CN and PFB-SCN, respectively. Cetyltrimethylammonium bromide (CTAB) was employed both as a phase transfer catalyst and a protein precipitant in the sample pretreatment, which facilitates the separation of the organic and aqueous phases, and greatly simplifies the pretreatment procedures to achieve simultaneous and rapid determination of cyanide and thiocyanate. Under the optimized conditions, the limits of detection (LODs) of cyanide and thiocyanate in milk were 0.006 mg/kg and 0.015 mg/kg, and the spiked recoveries ranged from 90.1% to 98.2% and from 91.8% to 98.9% with relative standard deviations (RSDs) less than 18.9% and 15.2%, respectively. The proposed method was validated as a simple, fast and highly sensitive method for the determination of cyanide and thiocyanate in milk. FAU - Li, Xing AU - Li X AD - Technology Center of Qinhuangdao Customs, Qinhuangdao, P.R. China. AD - Imported Science and Technology (Beijing) Co., Ltd, Beijing, P.R. China. FAU - Ji, Yongyan AU - Ji Y AD - Technology Center of Qinhuangdao Customs, Qinhuangdao, P.R. China. AD - Department of Environmental Science & Engineering, Fudan University, Shanghai, P.R. China. FAU - Zu, Tiehong AU - Zu T AD - Technology Center of Qinhuangdao Customs, Qinhuangdao, P.R. China. FAU - Huang, Xuezhe AU - Huang X AD - Technology Center of Qinhuangdao Customs, Qinhuangdao, P.R. China. FAU - Wang, Jing AU - Wang J AD - Technology Center of Qinhuangdao Customs, Qinhuangdao, P.R. China. FAU - Cao, Yanzhong AU - Cao Y AD - Technology Center of Qinhuangdao Customs, Qinhuangdao, P.R. China. FAU - Cui, Zongyan AU - Cui Z AD - Technology Center of Qinhuangdao Customs, Qinhuangdao, P.R. China. LA - eng PT - Journal Article DEP - 20230706 PL - England TA - Food Addit Contam Part A Chem Anal Control Expo Risk Assess JT - Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment JID - 101485040 RN - 0 (Cyanides) RN - Z7FF1XKL7A (Cetrimonium) RN - O748SU14OM (thiocyanate) RN - 0 (Thiocyanates) SB - IM MH - Animals MH - *Tandem Mass Spectrometry MH - Gas Chromatography-Mass Spectrometry/methods MH - *Cyanides/analysis MH - Cetrimonium/analysis MH - Milk/chemistry MH - Thiocyanates/analysis OTO - NOTNLM OT - Cyanide OT - cetyltrimethylammonium bromide (CTAB) OT - gas chromatography-tandem mass spectrometry (GC-MS/MS) OT - milk OT - pentafluorobenzyl bromide (PFBBr) OT - thiocyanate EDAT- 2023/07/06 19:12 MHDA- 2023/08/14 06:42 CRDT- 2023/07/06 15:43 PHST- 2023/08/14 06:42 [medline] PHST- 2023/07/06 19:12 [pubmed] PHST- 2023/07/06 15:43 [entrez] AID - 10.1080/19440049.2023.2227742 [doi] PST - ppublish SO - Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2023 Aug;40(8):1025-1034. doi: 10.1080/19440049.2023.2227742. Epub 2023 Jul 6.