Content and distribution of inorganic elements in Laminaria japonica based on ICP-MS and Micro-XRF.
10.19540/j.cnki.cjcmm.20210803.203
- Author:
Hai-Yang LI
1
;
Sheng GUO
1
;
Hui YAN
1
;
Tao YANG
2
;
Dai-Xin YU
1
;
Zhi-Lai ZHAN
3
;
Jin-Ao DUAN
1
Author Information
1. National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of Traditional Chinese Medicine Formulae, Nanjing University of Chinese Medicine Nanjing 210023, China.
2. State Key Laboratory of Mineral Deposits Research, Nanjing University Nanjing 210023, China.
3. State Key Laboratory of Dao-di Herbs Breeding Base, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences Beijing 100700, China.
- Publication Type:Journal Article
- Keywords:
Laminaria japonica;
Micro-XRF;
arsenic species;
element distribution;
inorganic elements
- MeSH:
Arsenic/analysis*;
Chromatography, High Pressure Liquid/methods*;
Laminaria;
Mass Spectrometry/methods*;
Spectrum Analysis;
Trace Elements/analysis*
- From:
China Journal of Chinese Materia Medica
2022;47(2):444-452
- CountryChina
- Language:Chinese
-
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.
