Hydrogen-Bonding Recognition-Induced Colorimetric Determination of Hydrazine Based on the Tryptophan Capped Gold Nanoparticles
Figure 2
The SEM images of in the absence of (a) and in the presence of hydrazine (b). Condition: 1.2 mL premixed solution containing 1.0 × 10−2 M PBS (pH 5.0), 3.1 × 10−4 M HAuCl4, 3.1 × 10−3 M Trp were mixed for by a shaker vortex and incubated in a 40°C water bath for 30 min. Successively, 2.0 × 10−4 of hydrazine were added to the premixed solution, shaking 20 times.
