A new beryllium ion-selective membrane electrode based on dibenzo(perhydrotriazino)aza-14-crown-4 ether

被引：34
作者：
Gupta, Vinod Kumar [1 ]
Singh, Ashok Kumar [1 ]
Mergu, Naveen [1 ]
机构：
[1] Indian Inst Technol Roorkee, Dept Chem, Roorkee 247667, Uttar Pradesh, India
来源：
ANALYTICA CHIMICA ACTA | 2012年 / 749卷
关键词：
Beryllium selective electrode; Dibenzo(perhydrotriazino)aza-14-crown-4 ether; Poly(vinyl chloride) membrane; Potentiometry; ATOMIC-ABSORPTION-SPECTROMETRY; PVC MATRIX MEMBRANE; POTENTIOMETRIC SENSOR; PHARMACEUTICAL FORMULATIONS; EMISSION-SPECTROMETRY; BIOLOGICAL-FLUIDS; NATURAL-WATERS; FLOW-INJECTION; TRACE AMOUNTS; ROCK SAMPLES;
D O I：
10.1016/j.aca.2012.08.050
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Beryllium(II) selective electrodes have been fabricated based on poly(vinyl chloride) (PVC) matrix membranes containing newly synthesized neutral carrier dibenzo(perhydrotriazino)aza-14-crown-4 ethers as ionophore. Best performance was exhibited by the membrane having a composition ionophore (Ila):PVC:sodium tetraphenylborate (NaTPB):tributyl phosphate (TBP) in the ratio (w/w; mg) of 5:30:3:65. This membrane worked well over a wide concentration range 7.6 x 10(-6) to 1.0 x 10(-1) M of Be2+ with a Nernstian slope of 30.7 mV per decade of beryllium activity. The response time of the sensor is 15s and the membrane can be used over a period of 4 months with good reproducibility. The proposed electrode works well in a wide pH range 3.0-9.0. It was successfully applied to the determination of beryllium in a mineral sample. (C) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：44 / 50
页数：7
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