Analytical Sciences

A Natural Light Visible Colorimetric Responses Fluorescent Probe for Hydrazine Detection

Yanan LI, Xiaoming WU, Shaoxiang YANG, Sen LIANG, Hongyu TIAN, and Baoguo SUN

Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, P. R. China

A natural light visible colorimetric responses fluorescent probe (Probe 1) was developed for N₂H₄ detection. The recognition mechanism of Probe 1 for hydrazine is based on addition-cyclization. The LOD of Probe 1 for N₂H₄ was 80.3 nM (0.0026 mg/L), which is below the national limited standard (0.02 mg/L). When various concentrations of N₂H₄ were added, the color of the Probe 1 solution was graded gradually from yellow to colorless, which could be observed under natural light. The changing course only takes 5 min. Furthermore, Probe 1 was successful applied to detect N₂H₄ in mineral water, seawater, tap water and river water. The obtained recovery ranged from 91.91 – 100.00%. Probe 1 has great potential, developed as a visual tool for N₂H₄ rapid detection.

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