PMID- 28490103 OWN - NLM STAT- MEDLINE DCOM- 20170901 LR - 20181202 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 232 DP - 2017 Oct 1 TI - Speciation analysis of organoarsenic compounds in livestock feed by microwave-assisted extraction and high performance liquid chromatography coupled to atomic fluorescence spectrometry. PG - 493-500 LID - S0308-8146(17)30574-5 [pii] LID - 10.1016/j.foodchem.2017.04.012 [doi] AB - The development of a new method to determine the presence of the organoarsenic additives p-arsanilic acid (ASA), roxarsone (ROX) and nitarsone (NIT) in livestock feeds by high performance liquid chromatography coupled to ultraviolet oxidation hydride generation atomic fluorescence spectrometry (HPLC-UV/HG-AFS) after microwave assisted extraction (MAE) was proposed. Chromatographic separation was achieved on a C18 column with 2% acetic acid/methanol (96:4, v/v) as the mobile phase. The limits of detection (LODs) were 0.13, 0.09 and 0.08mgL(-1), and the limits of quantification (LOQs) were 0.44, 0.30 and 0.28mgL(-1). The relative standard deviations (RSDs) for ASA, ROX and NIT determined from five measurements of the mixed calibration standard were 3.3, 5.3, and 5.4%, respectively. MAE extraction of phenylated arsenic compounds using 1.5M H(3)PO(4) at 120 degrees C for 45min allowed for maximum recoveries (%) of total arsenic (As) and organoarsenic species, with no degradation of these compounds. The extraction of total As was approximately 97%, and the As species recoveries were between 95.2 and 97.0%. The results of the analysis were validated using mass balance by comparing the sum of extracted As with the total concentration of As in the corresponding samples. The method was successfully applied to determine the presence of these compounds in feed samples. ASA was the only As species detected in chicken feed samples, with a concentration between 0.72 and 12.91mgkg(-1). CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Saucedo-Velez, A A AU - Saucedo-Velez AA AD - Universidad Autonoma de Nuevo Leon, UANL, Facultad de Ciencias Quimicas, Cd. Universitaria, San Nicolas de los Garza, Nuevo Leon C.P. 66455, Mexico. FAU - Hinojosa-Reyes, L AU - Hinojosa-Reyes L AD - Universidad Autonoma de Nuevo Leon, UANL, Facultad de Ciencias Quimicas, Cd. Universitaria, San Nicolas de los Garza, Nuevo Leon C.P. 66455, Mexico. FAU - Villanueva-Rodriguez, M AU - Villanueva-Rodriguez M AD - Universidad Autonoma de Nuevo Leon, UANL, Facultad de Ciencias Quimicas, Cd. Universitaria, San Nicolas de los Garza, Nuevo Leon C.P. 66455, Mexico. FAU - Caballero-Quintero, A AU - Caballero-Quintero A AD - Laboratorio de Quimica Forense, Criminalistica y Servicios Periciales, Procuraduria General de Justicia del Estado de Nuevo Leon. Av. Gonzalitos 452, Col. Residencial Galerias, Monterrey, NL C.P. 64649, Mexico. FAU - Hernandez-Ramirez, A AU - Hernandez-Ramirez A AD - Universidad Autonoma de Nuevo Leon, UANL, Facultad de Ciencias Quimicas, Cd. Universitaria, San Nicolas de los Garza, Nuevo Leon C.P. 66455, Mexico. FAU - Guzman-Mar, J L AU - Guzman-Mar JL AD - Universidad Autonoma de Nuevo Leon, UANL, Facultad de Ciencias Quimicas, Cd. Universitaria, San Nicolas de los Garza, Nuevo Leon C.P. 66455, Mexico. Electronic address: jorge.guzmanmr@uanl.edu.mx. LA - eng PT - Journal Article DEP - 20170405 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - N712M78A8G (Arsenic) SB - IM MH - *Animal Feed MH - Animals MH - Arsenic MH - Chromatography, High Pressure Liquid MH - Food Analysis MH - *Livestock MH - Microwaves MH - Spectrometry, Fluorescence OTO - NOTNLM OT - Atomic fluorescence spectrometry OT - Livestock feed samples OT - Microwave assisted extraction OT - Phenyl arsenic compounds OT - Reversed phase chromatography EDAT- 2017/05/12 06:00 MHDA- 2017/09/02 06:00 CRDT- 2017/05/12 06:00 PHST- 2016/08/22 00:00 [received] PHST- 2017/03/29 00:00 [revised] PHST- 2017/04/03 00:00 [accepted] PHST- 2017/05/12 06:00 [entrez] PHST- 2017/05/12 06:00 [pubmed] PHST- 2017/09/02 06:00 [medline] AID - S0308-8146(17)30574-5 [pii] AID - 10.1016/j.foodchem.2017.04.012 [doi] PST - ppublish SO - Food Chem. 2017 Oct 1;232:493-500. doi: 10.1016/j.foodchem.2017.04.012. Epub 2017 Apr 5.