Elemental Composition of Denim Samples via Conductive Heating-Assisted Decomposition with Low Acid Consumption and ICP-OES Detection.

ABSTRACT: This study aimed to determine the elemental composition (Al, Co, Cu, Mg, Mn, Ni, and Zn) of denim garments with varying compositions. An acid digestion method was developed using a 2³ full factorial design to optimize sample preparation conditions, using an open-system digester block. Among 29 denim samples, 27 were successfully digested, exhibiting residual carbon and acidity below 2% and 10%, respectively. Elemental analysis was conducted using ICP OES, with validation through recovery tests (75-125%) and a certified reference material. No significant differences were found between the determined and certified values, as confirmed by a t test. DLS analysis revealed a particle size distribution of less than 1 μm in the digested samples. The method proved to be cost-effec

SUBMITTER: Barbosa AL 

PROVIDER: S-EPMC12444594 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature