Hg2+ detection using a disposable and miniaturized screen-printed electrode modified with nanocomposite carbon black and gold nanoparticles

被引：50
|
作者：
Cinti, Stefano [1 ]
Santella, Francesco [1 ]
Moscone, Danila [1 ,2 ]
Arduini, Fabiana [1 ,2 ]
机构：
[1] Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, Via Ric Sci 1, I-00133 Rome, Italy
[2] Consorzio Interuniv Biostrutture & Biosistemi INB, Viale Medaglie Oro 305, Rome, Italy
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2016年 / 23卷 / 09期
关键词：
Mercury detection; Anodic stripping voltammetry; Screen-printed electrode; Carbon black; Gold nanoparticles; Soil; ANODIC-STRIPPING VOLTAMMETRY; ELECTROCHEMICAL SENSOR; MERCURY ANALYSIS; TRACE DETECTION; GLASSY-CARBON; WATER; PERFORMANCE; SAMPLES; PRECONCENTRATION; METHYLMERCURY;
D O I：
10.1007/s11356-016-6118-2
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A miniaturized screen-printed electrode (SPE) modified with a carbon black-gold nanoparticle (CBNP-AuNP) nanocomposite has been developed as an electrochemical sensor for the detection of inorganic mercury ions (Hg2+). The working electrode surface has been modified with nanocomposite constituted of CBNPs and AuNPs by an easy drop casting procedure that makes this approach extendible to an automatable mass production of modified SPEs. Square wave anodic stripping voltammetry (SWASV) was adopted to perform Hg2+ detection, revealing satisfactory sensitivity and detection limit, equal to 14 mu A ppb(-1) cm(-2) and 3 ppb, respectively. The applicability of the CBNP-AuNP-SPE for the determination of inorganic mercury has been assessed in river water by a simple filtration and acidification of the sample as well as in soil by means of a facile acidic extraction procedure assisted by ultrasound.
引用
收藏
页码：8192 / 8199
页数：8
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