Journal of Fluorescence ( IF 2.6 ) Pub Date : 2023-09-04 , DOI: 10.1007/s10895-023-03413-x Pankaj Bhatia 1 , Virender 1 , Harish Kumar Sharma 1 , Gurjaspreet Singh 2 , Brij Mohan 3
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For the determination of tin(II) traces, an extractive spectrophotometric approach is devised. The applied method serves a powerful tool for determination of tin(II), involves the formation of yellow colored complex after the binding of 6-bromo-3-hydroxy-2-(5-methylfuran-2-yl)-4H-chromen-4-one (BHMF) and tin(II) in 1:2 stiochiometry in a slightly acidic medium (HCl). The complex shows absorbance at 434 nm with respect of the blank reagent. The outcomes of spectral investigation for complexation showed a Beer’s range of 0–1.3 μg Sn mL−1, molar absorptivity, specific absorptivity and Sandell’s complex sensitivity are 9.291 × 104 L mol−1 cm−1, 0.490 mL g−1 cm−1 and 0.002040 μg cm−2 at 434 nm that was stable for two days. The interferences study results showed that this method is free from interferences, when tested with metal ions including Ag, Be, Bi, Ca, Cd, Ce, Co, Hg, Mo, Re, Pt, Se,Ti, U, V, W and other common cations, anions, and complexing agents. The applied method is quite simple, highly selective, and sensitive with good re-producibility. This method has been satisfactorily by utilizing the proposed procedure, and its applicability has been tested by analyzing synthetic samples and an alloy sample of gunmetal. The procedure assumes this because of the scarcity of better methods for determining tin(II). The results are in good agreement with the certified value.
Graphical Abstract
中文翻译：
使用 6-bromo-3-羟基-2-(5-甲基呋喃-2-基)-4H-chromen-4-one 萃取分光光度法检测 Sn(II)
为了测定痕量锡(II)，设计了萃取分光光度法。该方法是测定锡(II)的有力工具，涉及 6-bromo-3-羟基-2-(5-甲基呋喃-2-基)-4H-苯并吡喃-结合后形成黄色复合物。 4-酮 (BHMF) 和锡 (II) 按 1:2 化学计量在微酸性介质 (HCl) 中混合。相对于空白试剂，复合物在 434 nm 处显示吸光度。络合作用光谱研究结果表明，Beer 范围为 0–1.3 μg Sn mL -1 ，摩尔吸光率、比吸收率和 Sandell 络合灵敏度为 9.291 × 10 4 L mol -1 cm -1 、0.490 mL g -1 cm - 1和0.002040 μg cm -2在434 nm处稳定两天。干扰研究结果表明，该方法对Ag、Be、Bi、Ca、Cd、Ce、Co、Hg、Mo、Re、Pt、Se、Ti、U、V、W等金属离子进行测试时，无干扰。以及其他常见的阳离子、阴离子和络合剂。该方法操作简单、选择性高、灵敏度高、重现性好。通过利用所提出的程序，该方法得到了令人满意的结果，并且通过分析合成样品和炮铜合金样品测试了其适用性。该程序之所以如此假设，是因为缺乏更好的测定锡 (II) 的方法。结果与认证值非常吻合。
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