Assessment of an ultramicroelectrode array (UMEA) sensor for the determination of trace concentrations of heavy metals in water [online] (Record no. 40767)

MARC details
000 -LEADER
fixed length control field 03072naaaa2200313uu 4500
001 - CONTROL NUMBER
control field https://directory.doabooks.org/handle/20.500.12854/41448
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20220219200910.0
020 ## - INTERNATIONAL STANDARD BOOK NUMBER
International Standard Book Number KSP/1362004
020 ## - INTERNATIONAL STANDARD BOOK NUMBER
International Standard Book Number 3937300481
024 7# - OTHER STANDARD IDENTIFIER
Standard number or code 10.5445/KSP/1362004
Terms of availability doi
041 0# - LANGUAGE CODE
Language code of text/sound track or separate title English
042 ## - AUTHENTICATION CODE
Authentication code dc
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name Xie, Xudong
Relationship auth
245 10 - TITLE STATEMENT
Title Assessment of an ultramicroelectrode array (UMEA) sensor for the determination of trace concentrations of heavy metals in water [online]
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Name of publisher, distributor, etc. KIT Scientific Publishing
Date of publication, distribution, etc. 2004
300 ## - PHYSICAL DESCRIPTION
Extent 1 electronic resource (X, 133 p. p.)
506 0# - RESTRICTIONS ON ACCESS NOTE
Terms governing access Open Access
Source of term star
Standardized terminology for access restriction Unrestricted online access
520 ## - SUMMARY, ETC.
Summary, etc. The main objectives of this book are (i) to investigate the electrochemical behavior and the analytical performance of a novel ultramicroelectrode array (UMEA); (ii) to assess the analytical parameters of square-wave anodic stripping voltammetric measurements (SWASV) using the UMEA; and (iii) to estimate the potential of the UMEA in developing decentralised analytical equipments for the determination of trace concentrations of heavy metals in natural waters. Surface analytical techniques (SEM, ESEM, and AFM) showed that the UMEA chips are of high quality in manufacture. Cyclic voltammetric and chronoamperometric experiments proved that the electrochemical behavior of the UMEA is dominated by the features characteristic for single microelectrodes.Chronocoulometry was found to be the most suitable method in generating the Hg-film of good quality. A new UMEA chip could be plated at least ten times, corresponding to about 500 measurements of trace metals in synthetic aqueous solutions. Using SWASV, detection limits of <0.1 ï¿g/l could be achieved for the metals (Pb, Cd). Precision and accuracy were found to be approx +/-10% of RSD.In natural waters, the results obtained with the UMEA sensor showed a reasonably good agreement with HR-ICP-MS analyses. Different experimental parameters were optimised and investigated. Interferences (e.g., DOC) were significantly reduced through medium exchange and standard addition. Ultrasonic bath proved to be very efficient in resurfacing electrodes in laboratory.The UMEA sensor shows a great potential in developing a portable trace metal analyzer. However, for in situ and on-site measurements, the protection of the UMEA sensor from fouling seems to be inevitable. In order to achieve a pure microelectrode behavior with the UMEA, increasing the ratio of interelectrode distance to electrode diameter is recommended for further developments.
540 ## - TERMS GOVERNING USE AND REPRODUCTION NOTE
Terms governing use and reproduction All rights reserved
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546 ## - LANGUAGE NOTE
Language note English
653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term Schwermetall
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Uncontrolled term Geochemie
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Uncontrolled term Chemischer Sensor
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Uncontrolled term Elektrochemischer Sensor
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Uncontrolled term Mikroelektrode
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Uncontrolled term Sensor
856 40 - ELECTRONIC LOCATION AND ACCESS
Host name www.oapen.org
Uniform Resource Identifier <a href="https://www.ksp.kit.edu/3937300481">https://www.ksp.kit.edu/3937300481</a>
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Public note DOAB: download the publication
856 40 - ELECTRONIC LOCATION AND ACCESS
Host name www.oapen.org
Uniform Resource Identifier <a href="https://directory.doabooks.org/handle/20.500.12854/41448">https://directory.doabooks.org/handle/20.500.12854/41448</a>
Access status 0
Public note DOAB: description of the publication

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