Preprint Article Version 1 This version is not peer-reviewed

Atomic and Molecular Laser-Induced Breakdown Spectroscopy of Selected Pharmaceuticals

Version 1 : Received: 10 June 2019 / Approved: 11 June 2019 / Online: 11 June 2019 (10:42:58 CEST)

How to cite: Tiwari, P.K.; Rai, N.K.; Kumar, R.; Parigger, C.G.; RAI, A.K. Atomic and Molecular Laser-Induced Breakdown Spectroscopy of Selected Pharmaceuticals. Preprints 2019, 2019060095 (doi: 10.20944/preprints201906.0095.v1). Tiwari, P.K.; Rai, N.K.; Kumar, R.; Parigger, C.G.; RAI, A.K. Atomic and Molecular Laser-Induced Breakdown Spectroscopy of Selected Pharmaceuticals. Preprints 2019, 2019060095 (doi: 10.20944/preprints201906.0095.v1).

Abstract

Laser-induced breakdown spectroscopy (LIBS) of pharmaceutical drugs that contain paracetamol is investigated in air and argon atmospheres. Characteristic neutral and ionic spectral lines of various elements and molecular signatures of CN violet and C2 Swan band systems are observed. The relative hardness of all drug samples is measured as well. Principal component analysis, a multivariate method, is applied in data analysis for demarcation purposes of the drug samples. The CN violet and C2 Swan spectral radiances are investigated for evaluation of possible correlation of the chemical and molecular structures of the pharmaceuticals. Complementary Raman and Fourier-transform-infra-red spectroscopies are used record molecular spectra of the drug samples. The applicationof the above techniques for the drug screening are important for identification and mitigation of drugs that reveal additives that may cause adverse side-effects.

Subject Areas

paracetamol; laser-induced breakdown spectroscopy; cyanide; carbon Swan bands; principal component analysis; Raman spectroscopy; Fourier-Transform-infra-red spectroscopy

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