In this Young Scholar Perspective, the history, applications, and outlook of a unique methodology, field-induced droplet ionization mass spectrometry (FIDI-MS) are discussed. FIDI-MS is capable of selective in-situ sampling of molecules that reside at the air-water interface of droplets right after chemical reactions without any sample handling or transfer, and suffers minimal influence from the bulk of the solution. Its applications in studying the air-water interface chemistry in the contexts of molecular biology, atmospheric chemistry, molecular recognition, and the insights it has brought to these fields are introduced in this Perspective. Looking to the future, we anticipate that further development and applications of FIDI-MS in various fields will be an avenue rich with opportunities.

在这个年轻学者的观点中，讨论了一种独特的方法，场致液滴电离质谱（FIDI-MS）的历史，应用和前景。FIDI-MS能够在化学反应后立即对留在液滴的空气-水界面的分子进行选择性原位采样，而无需任何样品处理或转移，并且受溶液体积的影响最小。在此观点中介绍了它在分子生物学，大气化学，分子识别等方面研究空气-水界面化学的应用，以及对这些领域的认识。展望未来，我们预计FIDI-MS在各个领域的进一步开发和应用将是一个充满机遇的途径。