Title:	Non-chromatographic inorganic arsenic speciation in rice by spectrophotometry using silver nanoparticles as platform sensor.
Authors:	LIMA, F. E. H. SILVA, F. L. F. da AKHDHAR, A. A. FECHINE, P. B. A. NOGUEIRA, A. R. de A. MATOS, W. O.
Affiliation:	FRANCISCO EDUARDO HOLANDA LIMA, UNIVERSIDADE FEDERAL DO CEARÁ; FRANCISCO LUAN FONSÊCA DA SILVA, UNIVERSIDADE ESTADUAL DO CEARÁ; ABDULLAH ABKAR AKHDHAR, UNIVERSITY OF JEDDAH; PIERRE BASÍLIO ALMEIDA FECHINE, UNIVERSIDADE FEDERAL DO CEARÁ; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; WLADIANA OLIVEIRA MATOS, UNIVERSIDADE FEDERAL DO CEARÁ.
Date Issued:	2025
Citation:	Food Chemistry, v. 476, 143321, 2025.
Description:	Abstract: Significant arsenic (As) contents have been reported in rice. The most toxic As species, inorganic arsenic (iAs), is one of the most common species in rice. Thus, it is important monitor iAs in this matrix. In this work, plasmonic silver nanoparticles were functionalized with polyethylene glycol (Ag@PEG) and used as a sensor platform for iAs quantification in rice by spectrophotometry. The proposed method showed good linearity in a range between 1 and 15 mu g kg- 1; high selectivity for iAs; LOD and LOQ of 0.66 and 1.99 mu g kg- 1, respectively. The trueness of the method was evaluated by SRM NIST 1568b analysis (105 % of iAs recovery) and by comparing the results with HPLC-ICP-MS analysis (107 %). The As and iAs content in the rice samples varied between 119 and 605 mu g kg- 1 and 15.7-110 mu g kg- 1, respectively. The proposed method is simpler, faster, lower-cost and greener compared to conventional analytical methods to quantify iAs.
NAL Thesaurus:	Arsenites Arsenates Colorimetry Hydrides Assays Foods
Keywords:	Plasmonic nanosensor Non-chromatographic speciation Selective Hydride generation
ISSN:	0308-8146
DOI:	https://doi.org/10.1016/j.foodchem.2025.143321
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPPSE)