Abstract：
:A reliable and highly sensitive screening method based on liquid chromatography coupled withtriple-quadrupoleelectrospray tandemmass spectrometry (LC-MS/MS) analysis has been developed for the detection and quantification of three veterinary drugs, including buparvaquone, nystatin, and etomidate impurity B CRS. The tested drugs were extracted from samples of porcine muscle, pasteurized whole milk, and eggs using 10mM ammonium formate in acetonitrile followed by liquid-liquid purification with n-hexane. Chromatographic separation was achieved on a Phenomenex Luna C18 analytical column using 0.1% formic acid in ultrapure water (A) and acetonitrile (B) as mobile phases. All the matrix-matched calibration curves were linear (R2≥0.9756) over the concentration levels of the drugs tested. Recovery at two spiking levels (equivalent to the limit of quantification (LOQ)=5ng/g and 2×LOQ) ranged from 72.88% to 92.59% with intra- and inter-day precisions <17%, except for porcine muscle spiked with 5ng/g nystatin (RSD=25.15%). Samples collected from markets located in Seoul, Republic of Korea, tested negative for all the drugs analyzed. In summary, this method is suitable for screening and quantifying the selected drugs in a single chromatographic run and with high selectivity in animal-derived food products meant for human consumption.
journal_name
Food Chemjournal_title
Food chemistryauthors
Zhang D,Park JA,Abd El-Aty AM,Kim SK,Cho SH,Wang Y,Shim JH,Jeong JH,Shin SC,Kim JS,Chang BJ,Shin HCdoi
10.1016/j.foodchem.2017.06.008subject
Has Abstractpub_date
2017-12-15 00:00:00pages
1202-1208eissn
0308-8146issn
1873-7072pii
S0308-8146(17)30990-1journal_volume
237pub_type
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