Research Article

A Highly Selective Colorimetric Sensor for Cysteine in Water Solution and Bovine Serum Albumin

Figure 5

The UV-vis spectra changes of 2-bromonaphthalene-1,4-dione (2 × 10−5 mol⋅L−1) with the addition of bovine serum albumin (0–2 × 10−5 mol⋅L−1) at 298 K. Arrows indicate the direction of increasing CySH concentration.