نتایج جستجو برای: selective electrode

تعداد نتایج: 259963  

Hassan Khodakarami Hedayat O. Ghourchian

A PVC-based membrane containing cerium phosphate was developed. Unlike the cerium phosphate itself that acts as a cation exchanger, the membrane exhibited anion-exchange properties. Therefore, the utility of this compound as a sensory element for detection of molybdate ions was pursued. The response of molybdate selective electrode based on this membrane was perfectly linear in the concentr...

M. Darvishpour M. H. Fekri

A PVC membrane Ni(II) ion selective electrode has been constructed using (1E,2E)-bis(2-aminophenyl)N'1,N'2-dihydroxyethanebis as membrane carrier. The electrode exhibited a goodpotentiometric response for Ni(II) over a wide concentration range 1.0×10-4 to 1.0×10-1M with aslope of 29.4±0.5 mV/decade a and a working pH range of 6.5-9.0. It had a fast response time of≤20s. The best performance was...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده علوم پایه 1388

در این پایان نامه جهت اندازه گیری پتانسیومتری کاتیونهای سرب pb2+ و نیکلni2+ ، الکترود یون گزین غشایی مبتنی بر پلی وینیل کلرید (pvc) و الکترودهای خمیر کربن با استفاده از دو یون دوست جدید به همراه نرم کننده و افزودنیهای یونی طراحی، ساخت و مورد بررسی قرار گرفت. در تهیه الکترود یون گزین سرب از لیگاند n,n بیس( سالیسیلیدین) 1و6 دی آمینو هگزان (nsah) در ترکیب الکترود خمیر کربنی استفاده شد. الکترود ف...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده شیمی 1387

چکیده ندارد.

Ali Benvidi, Hamid Reza Zare, Mehdi Elahizadeh Rasoul Vafazadeh

An iodide ion-selective PVC membrane sensor based on copper (Π)-bis-Nphenilsalicyldenaminatocomplex as a novel sensing material is successfully developed. Theelectrode showed a good selectivity for iodide ion with respect to common inorganic anions. Thesensor exhibited a good linear response with slope of _58.6 ± 0.4 mV per decade over theconcentration range of 5.0 × 10-6 to 1.0 × 10-1 mol L-1,...

ژورنال: سلامت کار ایران 2017

Background and aims: Dicloran pesticide is used to inhibit the fungal spore germination for different crops. Due to the increasing application of pesticides, evaluating the occupational and environmental exposures by reliable and accurate analytical methods is necessary. This work was aimed to design the high selective sensor to determine the dicloran in biological and environmental samples. ...

In this work, the results concerning to the mean activity coefficient measurements for NaCl in the (glycerol + water) system using the potentiometric method are reported. The potentiometric measurements were performed on the galvanic cells without liquid junction of the type: Ag|AgCl|NaCl (m), glycerol (wt%), H2O (1 - wt)%|Na-ISE, in various mixed solvent systems containing 0, 5, 10,...

2017
Marcel A. G. Zevenbergen

This work presents a flexible miniaturized ion-selective sensor consisting of a solidcontact reference electrode (RE) and ion-selective electrodes (ISE) fabricated on the same foil. The flexible ion sensor was based on AgCl electrodes screen printed on polyethylene terephthalate foil. The RE was formed by casting a mixture of plasticized polyvinylchloride (PVC) and KCl on the AgCl electrode. Th...

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