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Detection of lead based on FeO@C/[BSMIM]HSO/GCE sensor

Food and Machinery, ISSN: 1003-5788, Vol: 37, Issue: 10, Page: 61-66
2021
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Article Description

Objective; Detect lead ions in water using Fe304 @C/ [BSMIM]HS04/GCE. Methods: The Fe304@C that had core-shell structure was synthesized based on Fe304 which was compounded with l-methyl-3-butanesulphonic acid imidazole bisulfate ionic liquid for preparing the Fe304 @C/[BSMIM] HSO4 sensor that using the glassy carbon electrode as carrier. Results: The study found that Fe304@C had a good conductivity and dispersion. The Fe304@C/[BSMIM]HS04/GCE has a good electro chemical stability and electrocatalytic activity. The quantitative a -nalysis of lead ion in drinking water was done using the Fe3 04 @ C/[BSMIM] HS04/GCE. The result showed that there was a good linear relationship between the concentration of lead ion and its oxidation peak current in the range of 0.1~80.0 ¡j.g/L, R2 = 0.999 5, the detection limit was 0.038 ¿¿g/L(S/N = 3), which was very low, and the recovery was 97. 60% ~ 100. 93% , with very good recovery effect and high accuracy. The sensor has a good repeatability, the RSD for 10 times was 2. 446%. Conclusion: The method is simple, fast and reliable, which provides a new solution for the detecting the lead ions in drinking water.

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