Busman Mark
U.S. Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Research Unit, Peoria, IL 61604.
J AOAC Int. 2018 May 1;101(3):643-646. doi: 10.5740/jaoacint.17-0338. Epub 2017 Oct 2.
Ambient ionization represents a new generation of MS ion sources and is used for the rapid ionization of small molecules under ambient conditions. The combination of ambient ionization and MS allows the analysis of multiple food samples with simple or no sample treatment or in conjunction with prevailing sample preparation methods. Two ambient ionization methods, desorptive electrospray ionization (DESI) and direct analysis in real time (DART) have been adapted for food safety application. Both ionization techniques provide unique advantages and capabilities. DART has been used for a variety of qualitative and quantitative applications. In particular, mycotoxin contamination of food and feed materials has been addressed by DART-MS. Applications to mycotoxin analysis by ambient ionization MS and particularly DART-MS are summarized.
常压电离代表了新一代质谱离子源，用于在常压条件下对小分子进行快速电离。常压电离与质谱相结合，能够在简单或无需样品处理的情况下，或者结合现有的样品制备方法，对多个食品样品进行分析。两种常压电离方法，即解吸电喷雾电离（DESI）和实时直接分析（DART），已被应用于食品安全领域。这两种电离技术都具有独特的优势和能力。DART已被用于各种定性和定量应用。特别是，DART-MS已用于解决食品和饲料原料中的霉菌毒素污染问题。本文总结了常压电离质谱，尤其是DART-MS在霉菌毒素分析中的应用。
