Abstract
Laser-induced Breakdown Spectroscopy (LIBS) is primarily an atomic emission spectroscopic method based on analyzing the spectral lines of elements in the laser-induced plasma. However, when the plasma cools down after its ignition, i.e., when one collects the emissions from the plasma after a certain interval of time/gate delay (~1 micro-second), the signature of the electronic bands of diatomic molecules is also observed along with ionic/atomic emission lines. The present manuscript reports the evaluation of toxicity/pollutants in green crackers based on the intensity of the electronic bands of the Aluminum Oxide (AlO), calcium oxide (CaO), and strontium oxide (SrO) molecules observed in the laser-induced plasma of the firecrackers. LIBS spectra of the green crackers show the presence of spectral lines of the heavy/toxic elements such as Al, Ca, Sr, Cr, Cu, and Ba, along with the electronic bands of the AlO, CaO, and SrO. Fourier Transform Infra-Red Spectroscopy (FTIR) has been used to validate the LIBS results and confirm the molecules in these crackers. The concentration of toxic elements in green crackers such as Aluminum (Al), Copper (Cu), and Chromium (Cr) has also been estimated using the Partial Least Square Regression method (PLSR) to evaluate and compare the extent of the toxicity of green crackers.
Reference24 articles.
1. Central Pollution Control Board (CPCB), and Ministry of Environment, Forest and Climate Change (2020). Report CPCB: Status of Pollution Abatement Measure, Firecracker.
2. In situ Analysis of Fireworks Using Laser-Induced Breakdown Spectroscopy and Chemometrics;Awasthi;J. Appl. Spectrosc.,2017
3. Russel, M.S. (2009). The Chemistry of Fireworks, The Royal Society of Chemistry.
4. A review on the adsorption of heavy metals by clay minerals, with special focus on the past decade;Uddin;Chem. Eng. J.,2017
5. National Environmental Engineering Research Institute (CSIR-NEERI) (2017, October 01). Definition of Green Crackers, Available online: https://www.neeri.res.in/contents/banner_details/green-crackers/5d81cbedbc313#googtrans(en|en).
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