![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
A high-performance liquid chromatography method for determination of ochratoxin A (OTA) in human blood serum has been validated. A liquid-liquid partition, solid-phase extraction and immunoaffinity cleanup was applied for OTA extraction from 0.5 mL of serum. Significant correlation (r = 0.998) was found over the range from 0.1 to 8 ng/mL, with better performance in terms of accuracy, precision, and selectivity. Validation was made with human serum spiked at two levels, 0.5 and 2.0 ng/mL,26 and natural contaminated serum. Average recoveries of OTA using different extraction methods ranged from 58.48 ± 4.56 to 94.85 ± 3.52%. Immunoaffinity cleanup showed a better recovery rate, with a lower detection limit validated at 0.1 ng/mL. The cited method can be used as a rapid and noninvasive tool to assess human and animal exposure to OTA.