Laboratório de Cromatografia e Espectrometria de Massas (LaCEM), Instituto de Química, Universidade Federal de Goiás (IQ-UFG), 74690-900 Goiânia-GO, Brazil; Instituto Federal de Goiás, Campus Luziânia, Luziânia, GO 72811-580 Brazil.
Laboratório de Cromatografia e Espectrometria de Massas (LaCEM), Instituto de Química, Universidade Federal de Goiás (IQ-UFG), 74690-900 Goiânia-GO, Brazil.
Food Chem. 2023 Jan 30;400:134014. doi: 10.1016/j.foodchem.2022.134014. Epub 2022 Aug 24.
This study evaluates the use of paper spray ionization mass spectrometry (PSI-MS) for rapid determination of bisphenol A (BPA) and bisphenol S (BPS) in UHT milk and milk packaging. The packages were analyzed by cutting the cartons into triangular shapes and submitting them to PSI-MS analysis. The milk samples were subjected to a simple liquid-liquid extraction and the supernatant was deposited onto a triangular paper that was subsequently used for PSI-MS analysis. In milk, BPS and BPA levels ranged from 60.0 to 150.8 ng mL. The LOD and LOQ values were 1.5 and 4.8 ng mL for BPA, and 4.8 and 16.0 ng mL for BPS, respectively. Linearity was R > 0.98 for both compounds. Precision values were below 20%, and recoveries close to 100%. The PSI-MS can be used as a simple, rapid, and accurate methodology to determine bisphenols in milk and milk packaging.
本研究评估了纸喷雾电离质谱（PSI-MS）在超高温牛奶和牛奶包装中快速测定双酚 A（BPA）和双酚 S（BPS）的应用。通过将纸盒切成三角形并进行 PSI-MS 分析来对包装进行分析。将牛奶样品进行简单的液-液萃取，将上清液沉积在三角形的纸上，然后用于 PSI-MS 分析。在牛奶中，BPS 和 BPA 的浓度范围为 60.0 至 150.8ng/mL。BPA 的检出限和定量限分别为 1.5 和 4.8ng/mL，BPS 的检出限和定量限分别为 4.8 和 16.0ng/mL。两种化合物的线性相关系数均大于 0.98。精密度值低于 20%，回收率接近 100%。PSI-MS 可用于简单、快速、准确地测定牛奶和牛奶包装中的双酚类物质。
