Spectrophotometric chemosensor for determination of sulfide in aqueous solution through ternary complex formation with eosin Y and lead (II)

سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 240

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شناسه ملی سند علمی:

GECCONF04_022

تاریخ نمایه سازی: 10 اسفند 1399

چکیده مقاله:

A chemosensor based on eosin for sensitive and selective determination of S2- in 100% aqueous solution was designed on the basis of the complex formation between eosin and lead. According to the method linear dynamic ranges between 3.831 ×10-6 to 20.15×10-5 molL-1. The calibration sensitivities were also estimated to 2.553 ×10-6, with a detection limit of 1.414 ×10-6 molL-1. No serious interference was evaluated during the analysis of at least 100-fold excess of various anion species such as SO3 2-,SO42-,S2O3 2-,S2O8 2-,SCN-, CN-,PO4 3- ,HPO4 2- ,F- ,Cl- ,Br- ,I- ,CH3COO- ,CO3 2-,NO3-. The suggested method was applied for the determination of sulfide in various water samples. Which gave satisfactory results. This method based on the decrease of absorbance at 516 nm which related complex between of eosin-pb with addition S2-.

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نویسندگان

Fatemeh Ghasemi

Department of Chemistry, Payame Noor University, ۱۹۳۹۵-۴۶۹۷, Tehran, Islamic Republic of Iran.

Hossein Tavallali

Department of Chemistry, Payame Noor University, ۱۹۳۹۵-۴۶۹۷, Tehran, Islamic Republic of Iran.