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In this study, the potential of laser-induced breakdown spectroscopy (LIBS) as an efficient multi-elemental quantification tool for fish feed is determined. A particular focus of this paper is total chromium, an essential element that has the potential to be toxic and carcinogenic. In total six elements, four macro-elements (Ca, Fe, K and Mg) and two micro-elements (Cr and Rb), were modelled using LIBS spectra of aquafeed samples. Reference analysis was conducted via inductively coupled plasma mass spectrometry (ICP-MS) and showed good agreement with LIBS predictions. These results provide evidence that LIBS has the potential to be utilized in the field as a real-time screening tool for establishing the elemental composition of a range of fish feeds.
Alam, Md. Ashraful; Pasquet, Camille; Moran, Fintan; Cullen, Patrick; Sullivan, Carl; Casado-Gavalda, Maria; and Markiewicz-Keszycka, Maria, "Elemental analysis of fish feed by laser-induced breakdown spectroscopy" (2020). Articles. 407.