Preconcentration of Silver Using Solidification of Floating Organic Drop and Its Determination by Flame Atomic Absorption Spectroscopy

  • سال انتشار: 1398
  • محل انتشار: نشریه متدهای شیمیایی، دوره: 3، شماره: 5
  • کد COI اختصاصی: JR_CHM-3-5_007
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 626
دانلود فایل این مقاله

نویسندگان

Hadi Noorizadeh

PhD student in Chemistry, Department of Chemistry, Faculty of Science, Ilam University, Ilam, Iran

Shahryar Abbasi

Professor in Chemistry, Department of Chemistry, Faculty of Science, Ilam University, Ilam, Iran

چکیده

A simple, rapid and dispersive liquid–liquid microextraction-solidification of floating organic drop procedure was combined with flame atomic absorption spectrometry and established for the determination of trace amounts of silver. 5-(4-dimethylamino-benzylidine) (Rhodenylene) ligand and 1-dodecanol were used as complexing agents and extracting solvents, respectively. The optimum extraction efficiency of silver was obtained after optimization of the pH, concentration of ligand, the nature and amount of solvent extraction, salt increase effect, extraction time, extraction temperature and stirring rate. The effects of various ions on the recovery of Ag were also investigated. The limit of detection defined as 3SB/m was 1.55 ngL−1. The sensitivity for three eight measurements of 10 and 100 μgL−1 of silver was 1.55 ngL−1. The relative standard deviation (RSD) for the measurements of 0.20 μgL−1 of silver was ±2.3%. Water well, mineral water and urban drinking water samples were analyzed for Ag amount. The microextraction method was satisfactorily used for the determination of Ag in various environmental waters.

کلیدواژه ها

Preconcentration, microextraction, Silver, Water, Atomic absorption spectrometry

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.