A novel microarray chemiluminescence method based on chromium oxide nanoparticles catalysis for indirect determination of the explosive triacetone triperoxide at the scene

摘要

Chromium oxide (Cr_2O_3) nanoparticles were found to greatly enhance the chemiluminescence (CL) of the luminol-hydrogen peroxide (H_2O_2) system. A novel microarray CL method was originally developed for the detection of triacetone triperoxide (TATP). The novel CL method was based on the outstanding catalytic effect of a Cr_2O _3 nanoparticle array on the CL reaction between lower concentrations of luminol and H_2O_2, which come from hydrolysis of TATP vapor. The calibration curve of H_2O_2 was linear over a range of 1.0 × 10~(-8) to 3.0 × 10~(-5) M with a detection limit of 1.6 × 10~(-9) M (R~2 = 0.9992, n = 12). The CL method has the advantages of being sensitive, selective, simple, time-saving, high-throughput, and shows good reproducibility. Therefore, these merits would make it easily popular.