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Ultra-sensitive, versatile and portable detection of hydrazine in eco-environmental systems using a
Xiao-Hong Li1, Meng-Zhao Li2, Xiao-Yan Yang1
1National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and, Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, PR China.
Abstract:
Hydrazine (N2H4), a highly reactive specie widely used in industrial processes, poses significant ecological risks. Accurate detection of N2H4 is essential for safeguarding public health, yet developing a robust tool for its global detection remains a significant challenge. Herein, we developed a ratiometric fluorescent sensor, DIPOT, designed for ultra-sensitive and portable detection of N2H4 in eco-environmental systems. DIPOT exhibited excellent ratiometric fluorescence performance for N2H4 in aqueous solution, with a detection limit as low as 4.5 nM and a substantial 156 nm blue shift, transitioning from red to green fluorescence. We integrated it into portable test strips for on-site quantitative detection and analysis of N2H4 vapor and solution via a smartphone application. DIPOT and its portable platform have been successfully applied to monitor ultra-trace levels of N2H4 in 20 diverse eco-environmental samples, including water, soil, crops, food and living organisms, showcasing its versatility. Furthermore, DIPOT facilitates real-time ratiometric bioimaging of N2H4 in living plants, cells and zebrafish. Our findings provide a robust and eco-friendly approach for global tracking of N2H4, representing a significant advancement in environmental sensing technology.
