Abstract
The simultaneous determination of thorium and uranium in mineral fertilizers by inductively coupled plasma optical emission spectrometry (ICP OES) was optimized. The three-level factorial design was applied to optimize the operating conditions of radiofrequency power and nebulizer gas flow rate. The analytical method was specific and selective for both elements.
Highlights
In recent decades, food security has become an aspect of great concern regarding environmental safety due to the accumulation of toxic chemicals in the environment, caused by the emission of natural and anthropogenic sources.[1,2,3,4,5,6,7,8,9]Among the anthropogenic sources, mineral fertilizers used as supplies to provide chemical elements and needed nutrients for the plants can be highlighted
The values obtained for these determinations were satisfactory since the inductively coupled plasma optical emission spectrometry (ICP OES) instrument used has a resolution of < 9 pm in the region ranging from ultraviolet to < 20 pm in the visible region, resulting in the minimization of the interferences
The instrumental conditions of ICP OES with axial configuration have been optimized by applying a three‐level factorial design with two variables and quintuplicate of central point, establishing a radiofrequency power of 1.0 kW and a nebulizer gas flow of 0.9 L min-1 as optimum conditions for the determination of Th and U
Summary
Food security has become an aspect of great concern regarding environmental safety due to the accumulation of toxic chemicals in the environment, caused by the emission of natural and anthropogenic sources.[1,2,3,4,5,6,7,8,9]Among the anthropogenic sources, mineral fertilizers used as supplies to provide chemical elements and needed nutrients for the plants can be highlighted.
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