在511、847、947、1001、1112、1441 和 1650 cm^-1（黑线）附近检测到 BSA 的特征峰。浸入 AP 后的纯 Zn 表面也显示了 BSA 的带（红线），这表明样品表面上 BSA 的出现。 值得注意的是，浸渍后所有波段都向高波数移动，这证明了 BSA 和 Zn 表面的结合。

The characteristic peaks for BSA were detected at around 511, 847, 947, 1001, 1112, 1441 and 1650 cm⁻¹ (the black line). The pure Zn surface after immersion in AP also show the bands for BSA (the red line), which is indicative of the appearance of BSA on sample surface. It is notable that all the bands shift towards high wavenumbers after immersion, which testifies the combination of BSA and Zn surface.