ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis of 4-nitroazobenzenesalicylidene fluorescence ketone and complexation fluorometry for the determination of Sn (IV)

Zhang Xin, Sheng Li, Han Feng, Li Hai-su, and Su Bi-quan

School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, China

E-mail: 2647528103@qq.com

Received: 14 August 2023  Accepted: 21 January 2024

Abstract:

In this experiment, the novel color developing agent 4-nitroazobenzenesalicylidene fluorescence ketone was used as raw material to determine Sn(IV) by coordination fluorescence method. At the maximum excitation and emission wavelengths (λ_ex/λ_em = 455 nm/552 nm), the Sn(IV) concentration in the range of 1.50–3.50 µg/mL showed a good linear relationship with the relative fluorescence intensity. The optimum experimental conditions and possible reaction mechanism were studied. The linear regression equation is ΔF = 83.4032–19.7658ρ(µg/mL), r = 0.9992. The detection limit was 0.0771 µg/mL and K_a = 3.66 × 10⁴ M⁻¹. After shielding the interfering ions, trace amounts of Sn(IV) were detected in synthetic water samples, laboratory wastewater, and canned asparagus. The recoveries were 101.64%, 99.42% and 103.48%, respectively. Satisfactory results were obtained.

Keywords: Coordination fluorescence method; 4-nitroazobenzenesalicylidene fluorescence ketone; Sn(IV)

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-024-03336-2

Chemical Papers 78 (6) 3639–3650 (2024)