研究目的
To investigate and develop a time-efficient and cost-effective method of detecting trace amounts of tartrazine in large yellow croaker using Ag nanowires.
研究成果
The study demonstrated that SERS technology combined with Ag nanowires is an effective, time-efficient, and cost-effective method for detecting tartrazine in large yellow croaker, with a detection limit that meets regulatory requirements. The method offers advantages over traditional techniques like HPLC in terms of speed and simplicity.
研究不足
The study mentions the challenge of overcoming matrix interference absolutely with the SERS technique, indicating a limitation in the method's ability to completely eliminate background noise or interference from non-target components in complex samples.
1：Experimental Design and Method Selection:
The study employed surface-enhanced Raman spectroscopy (SERS) technology coupled with Ag nanowires for the detection of tartrazine. The Ag nanowires were synthesized using the polyol method.
2：Sample Selection and Data Sources:
Large yellow croaker samples were purchased from a supermarket in Shanghai, confirmed to be tartrazine-free by HPLC.
3：List of Experimental Equipment and Materials:
Included AgNO3, polyvinyl pyrrolidone (PVP), NaCl, glycerol, ethanol, tartrazine, methanol, MgSO4, and PTFE microporous films.
4：Experimental Procedures and Operational Workflow:
Involved the preparation of Ag nanowires, standard tartrazine solutions, and large yellow croaker samples, followed by SERS analysis.
5：Data Analysis Methods:
The partial least square (PLS) model was used for quantitative analysis, with evaluation based on the coefficient of determination (R2), root-mean-square error (RMSE), and ratio of performance to deviation (RPD).
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