期刊
FOOD CHEMISTRY
卷 338, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.127797
关键词
Sargassum fusiforme; Laser-induced breakdown spectroscopy; Heavy metal; Qualitative analysis; Threshold variables method; Variable selection method
资金
- Construction Project of Wenzhou Key Laboratory (Engineering Center) [ZD202003]
- National Natural Science Foundation of China [31571920]
- Zhejiang Province Public Welfare Technology Application Research Project [2017C32098]
- Wenzhou Science and Technology Commissioner Special Project [X20170033]
- Wenzhou Basic Public Welfare Project [N20180014]
- Wenzhou City's major scientific and technological innovation project, research and application of Wenzhou's main marine fish frozen storage quality control technology [ZS2019001]
In this study, a detection model combining laser-induced breakdown spectroscopy (LIBS) with a simple framework was established to quantitatively analyze seven heavy metals in Sargassum fusiforme. The results showed that six of the heavy metal models were optimal, demonstrating the effectiveness of the TV-PLSR framework for quantitative analysis of heavy metals in Sargassum fusiforme.
As a nutritious and popular seafood among consumers, Sargassum fusiforme is susceptible to the toxic heavy metals because of its strong adsorption properties. In this study, laser-induced breakdown spectroscopy (LIBS) coupled with a simple framework (only remove some noise and low-intensity variables, and then combine with PLS algorithm) was used to establish the detection models to simultaneously and quantitatively analyze the content of heavy metals arsenic (As), chromium (Cd), cadmium (Cr), copper (Cu), mercury (Hg), lead (Pb) and zinc (Zn) in Sargassum fusiforme. As comparisons, three classic variable methods of successive projections algorithm (SPA), uninformative variable elimination (UVE) and variable importance in projection (VIP) were adopted. The final results showed that six of seven heavy metal models from the TV-PLSR model were optimal. These results demonstrate that the TV-PLSR framework combined with LIBS technique is an effective framework for quantitatively analyzing the heavy metals in Sargassum fusiforme.
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