A Fluorescence Method Based on N, S-Doped Carbon Dots for Detection of Ammonia in Aquaculture Water and Freshness of Fish
文献类型： 外文期刊
作者： Zhang, Jiaran 1 ; Xu, Zeyu 1 ; Shi, Ce 1 ; Yang, Xinting 1 ;
作者机构： 1.Beijing Agr Informat Technol Res Ctr, Beijing 100097, Peoples R China
2.Natl Engn Lab Agr Prod Qual & Safety Traceabil Te, Beijing 100097, Peoples R China
关键词： carbon dots; fluorescence; ammonia; aquaculture; freshness
期刊名称：SUSTAINABILITY （ 影响因子：3.251； 五年影响因子：3.473 ）
ISSN：
年卷期： 2021 年 13 卷 15 期
页码：
收录情况： SCI
摘要： Excessive ammonia can cause the death of fish and the eutrophication of the water environment, so ammonia detection is essential for environmental monitoring. In this study, a highly selective sensing strategy for ammonia detection based on N, S co-doped carbon dots (N, S-CDs) was developed. The as-prepared N, S-CDs exhibited excellent photoluminescence properties and fluorescent stability. N, S-CDs demonstrated fluorescence quenched in the presence of ammonia in the wide linear range of 2-80 mmol/L, and were highly selective towards ammonia over metal ions. Furthermore, a possible fluorescence quenching mechanism is proposed. N, S-CDs were further applied to detection of ammonia in aquaculture water samples and river water samples, showing good practicability with recoveries from 0.93 to 1.27 and relative standard deviations (RSDs) of 0.54% to 17.3%. N, S-CDs were also successfully used to determine the freshness of bighead carps.
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