Ultra-trace determination of thallium (I) in water using TiO2 nanoparticles prior to its quantitation by ICP-MS

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 289

متن کامل این مقاله منتشر نشده است و فقط به صورت چکیده یا چکیده مبسوط در پایگاه موجود می باشد.
توضیح: معمولا کلیه مقالاتی که کمتر از ۵ صفحه باشند در پایگاه سیویلیکا اصل مقاله (فول تکست) محسوب نمی شوند و فقط کاربران عضو بدون کسر اعتبار می توانند فایل آنها را دریافت نمایند.

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

IRANCC20_079

تاریخ نمایه سازی: 28 اردیبهشت 1398

چکیده مقاله:

Nowadays heavy metals such as thallium have received considerable attention owing to their effects in the pollution of the environment [1]. A new method has been developed for the determination of trace amounts of Tl(I) from aqueous solution based on simultaneous sorption and preconcentration with TiO2 nanoparticles as sorbent prior to its determination by Inductively coupled plasma mass spectrometry (ICP-MS). In this research we use self-made PTFE microcolumn packed with TiO2 nanoparticles with high specific surface area were prepared using sonochemical synthesis method at high frequency, low intensity and relatively low temperature (75˚C)[2]. The retained metal ions on the microcolumn were eluted with small amounts of a suitable eluent solvent. The optimum experimental parameters for preconcentration of Tl(I), such as pH, volume and flow rate of sample solution, eluent and interfering ions, have been investigated. Under the optimal conditions, the linear range, detection limit and precision (R.S.D., n=5) for Tl (I) were (35 -720 ng L−1 ), 5.0 ng L−1 and 2.3 % respectively. The adsorption capacity of TiO2 nanoparticles for Tl(I) was found to be 25 mg g−1. The method has been also applied for determination of trace of this element in some environmental water samples and standard reference material with satisfactory results.

نویسندگان

Saeid Asadpour

Department of Chemistry, Faculty of Science, Shahrekord University, Shahrekord, Iran

Mahmood Chamsaz

Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

Mohammad Hasan Entezari

Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

Md Jelas Haron

Department of Chemistry, Faculty of Science, University Putra Malaysia, Selangor, Malaysia