The IR spectral analysis was carried out by using a FT-IR spectrophotometer (Nicolet iS10 FT-IR, Thermo Fischer Scientific, Waltham, Massachusetts, USA), equipped with a MCT liquid nitrogen cooled detector. 2.2. Preparation of Solutions Tris buffer (20 mM, pH 7.4) was prepared by dissolving ...
The concentrations of 17 metal elements in the solutions were analyzed using an Thermo Fisher X2 Series Inductively Coupled Plasma Mass Spectrometry (ICP-MS), which has an ICP source, Optimization system (extracting and focusing of the ion beam), a quadrupole mass spectrometer and a detector. ...