Please use this identifier to cite or link to this item:
|Title:||Miniaturized Green Analytical Method for Determination of Silver Ions Using C-phycocyanin from Cyanobacteria as an Ecofriendly Reagent|
Duy Hien Nguyen
Duy Hien Nguyen
|Keywords:||microfluidic;micro-flow injection analysis;natural reagent;silver ion;C-phycocyanin;green analytical chemistry|
|Publisher:||Faculty of Science, Chiang Mai University|
|Citation:||Chiang Mai Journal of Science 48, 1 (January 2021),221-230|
|Abstract:||Green analytical chemistry methods have attracted increasing attention for sustainable development in analytical laboratories. Miniaturization of analytical devices and replacement of chemical regents with ecofriendly ones are key steps to realizing the objectives of green analytical chemistry. This work describes a microfluidic-based micro-flow injection analysis (μ-FIA) system for determination of silver ions (Ag+) in water samples using C-phycocyanin extracted from cyanobacteria as a natural and safe colorimetric reagent. The μ-FIA system is comprised of a 30 � 30 square polymethylmethacrylate platform on which the microchannel architecture has been engraved with a CO2 laser. The microchip was sandwiched between two polydimethylsiloxane sheets for packaging and to facilitate its integration with fiber optic spectrometer for signal monitoring, and a multi-syringe pump for delivery/manipulation of solutions. At optimized operating conditions, the system response was linear over the range 0.080–2.40 mg L−1 with a R2 of 0.9996, and the detection limit was 25 μg L−1. The developed method was applied to analysis of Ag+ in drinking water, river water and wastes, and the results were comparable with those from the standard inductively coupled plasma optical emission spectrometry method. The outstanding features of this system are the low consumption of reagents by the microfluidic device, and the replacement of toxic reagents with natural, ecofriendly alternatives.|
|Description:||The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.|
|Appears in Collections:||CMUL: Journal Articles|
Files in This Item:
There are no files associated with this item.
Items in CMUIR are protected by copyright, with all rights reserved, unless otherwise indicated.