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- W4376605175 abstract "Food such as cereal crops, oil crops and dairy products are very easy to produce highly toxic and carcinogenic aflatoxins during inappropriate storage. Therefore, it is of great significance to achieve rapid, non-destructive and highly sensitive detection of aflatoxin. A terahertz metamaterial sensor with “X” compound double-peak structure is designed based on electromagnetic theory to realize highly sensitive detection of aflatoxin B2 solution. It is found that the amplitude of the transmission peak of the terahertz transmission spectrum of aflatoxin B2 (AFB2) solution around 1.2 THz and 2.0 THz gradually decreased with the increase of the concentration of aflatoxin B2 solution, and the frequency of the transmission peak gradually shifted to high frequency with the increase of the concentration of aflatoxin B2 solution, hence a full concentration model was established. And a strategy of first classifying concentration intervals and then building a grouped quantitative model was proposed. The Limit of Detection (LOD) of the interval sub-model of low and medium concentration of aflatoxin B2 solution has been greatly improved with the LOD of the optimal grouping model was 7.28×10-11 mg/ml, 4.19×10-9 mg/ml and 1.22×10-7 mg/ml, respectively. This research verifies the feasibility of terahertz metamaterial sensor based on “X” composite double-peak structure combined with THz-TDS technology for highly sensitive detection of aflatoxin B2 solution. And it provides a new rapid, non-destructive and highly sensitive detection of aflatoxin in food." @default.
- W4376605175 created "2023-05-17" @default.
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- W4376605175 date "2023-05-01" @default.
- W4376605175 modified "2023-09-25" @default.
- W4376605175 title "Research on Highly Sensitive Quantitative Detection of Aflatoxin B2 Solution Based on THz Metamaterial Enhancement" @default.
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- W4376605175 doi "https://doi.org/10.1016/j.saa.2023.122809" @default.
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