Content and distribution of inorganic elements in Laminaria japonica based on ICP-MS and Micro-XRF / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 444-452, 2022.
Artigo
em Chinês
| WPRIM
| ID: wpr-927988
ABSTRACT
In order to evaluate the composition and distribution characteristics of inorganic elements in Laminaria japonica, this study employed inductively coupled plasma mass spectrometry(ICP-MS) to detect the inorganic elements and used high performance liquid chromatography tandem ICP-MS(HPLC-ICP-MS) to determine the content of different arsenic species in L. japonica from diffe-rent origins. Micro X-ray fluorescence(Micro-XRF) was used to determine micro-area distribution of inorganic elements in L. japonica. The results showed that the average content of Mn, Fe, Sr, and Al was high, and that of As and Cr exceeded the limits of the national food safety standard. According to the results of HPLC-ICP-MS, arsenobetaine(AsB) was the main species of As contained in L. japonica. The more toxic inorganic arsenic accounts for a small proportion, whereas its content was 1-4 times of the limit in the national food safety standard. The results of Micro-XRF showed that As, Pb, Fe, Cu, Mn, and Ni were mainly distributed on the surface of L. japonica. Among them, As and Pb had a clear tendency to diffuse from the surface to the inside. The results of the study can provide a basis for the processing as well as the medicinal and edible safety evaluation of L. japonica.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Arsênio
/
Análise Espectral
/
Espectrometria de Massas
/
Oligoelementos
/
Cromatografia Líquida de Alta Pressão
/
Laminaria
Idioma:
Chinês
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2022
Tipo de documento:
Artigo
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