Potentiometric determination of monohydrogen arsenate by zeolite-modified carbon-paste electrode
Publish place: Iran International Zeolite Conference
Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
View: 1,558
This Paper With 9 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ZEOLITE01_074
تاریخ نمایه سازی: 30 دی 1387
Abstract:
A new carbon-paste electrode, based on natural zeolite (c1inoptiolite) modified by the Fe2+ ion as carrier,
was developed. The electrode exhibits a linear response to monohydrogen arsenate over a wide concentration
range (5.0 x 10-8-1.0 x 10-3M) with a Nernstian slope of -28.3±1.0mV per decade (r2=0.9998). The limit of
detection was 3.0x 10-8 M. It has a fast response time 5-10 s and can be used for more than 2 months.
Selectivity coefficients determined by the fixed interference method indicate that a good discriminating
ability towards mono hydrogen arsenate ion in comparison with other anions. The monohydrogen arsenateselective
electrode could be used in the pH range of 7.0-11.0. This chemically modified carbon-paste
electrode was successfully used for the determination of arsenic in water and wastewater samples.
Keywords:
Authors
M MAZLOUM ARDAKANI
Faculty of Science, Department of Chemistry, Yazd University, Yazd, Iran
M.A KARIMI
Department of Chemistry, Ardakan Payam Noor University, Ardakan, Iran
M.H MASHHADIZADEH
Faculty of Science, Department of Chemistry, Tarbiat Moalem University, Tehran, Iran
M PESTEH
Department of Chemistry, Ardakan Payam Noor University, Ardakan, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :