Compositional analysis of soil using calibration-free laser-induced breakdown spectroscopy. Issue 5 (28th May 2022)

• Record Type: Journal Article
• Authors: Israr, Muhammad Aamir; Abbas, Qamar; Haq, Sami-ul; Nadeem, Ali
• Is Part Of: Spectroscopy letters. Volume 55:Issue 5(2022)
• Page Start: 350
• Page End: 361
• Publication Date: 2022-05-28
• Subjects: Calibration-free technique -- compositional analysis -- heavy metals -- laser-induced breakdown spectroscopy -- light and nutrients elements -- soil elements; Spectrum analysis -- Periodicals; 543.5
• DOI: 10.1080/00387010.2022.2077378
• Languages: English
• ISSNs: 0038-7010

Abstract

Abstract: Compositional analysis often soil samples collected from Islamabad, Pakistan, is performed using the fundamental harmonic (1064 nm) of a Q-switched Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) laser. The plasma emissions were recorded using a broadband (200–800 nm) spectrometer (LIBS2500plus, Ocean Optics Inc., USA) having ≈ 0.1 nm resolution. The qualitative analysis of the pelletized soil samples confirms the presence of several heavy metals (Titanium, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel, Lead, Copper, Zinc, Cadmium, Zirconium, Cesium, Strontium, and Barium), light and nutrients elements (Lithium, Rubidium, Aluminum, Boron, Carbon, Potassium, Nitrogen, Magnesium, Phosphorus, Silicon, and Calcium). The quantitative analyses were performed using the calibration-free laser-induced breakdown spectroscopy, its variant, and single sample calibration techniques. It is found that the concentration of heavy metals (Cadmium, Cobalt, Chromium, and Nickel) exceeds the maximum permissible limit, which is eventually accumulated in the human body through the food chain and threatens health.