NDLI: Styrofoam modified paper as a low-cost platform for qualitative and semi-quantitative determination of Ni<sup>2+</sup> ions in wastewater

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Styrofoam modified paper as a low-cost platform for qualitative and semi-quantitative determination of Ni²⁺ ions in wastewater

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Styrofoam modified paper as a low-cost platform for qualitative and semi-quantitative determination of Ni²⁺ ions in wastewater

Content Provider	Royal Society of Chemistry (RSC)
Author	Ismail, Iqbal M. I. Rashid, Muhammad Imtiaz El-Shahawi, Mohammad Soror Mujawar, Liyakat Hamid
Copyright Year	2016
Abstract	In the present article we have demonstrated a swift and low-cost method to design hydrophobic paper and its potential applications for the determination of Ni2+ ions in wastewater. Styrofoam was used as a precursor to fabricate pristine filter paper into a low wetting substrate. The water contact angle (θ) of the modified paper was ∼111° whereas atomic force microscopy analysis ensured a uniform coating of the polymer onto cellulose fibers. Metal specific reagent 1-(2-mercaptophenyl)iminomethyl naphthalen-2-ol (MPMN) was manually arrayed and one-step assay for the determination of Ni2+ was demonstrated on the aforementioned substrates. The end-result was observed in the form of a distinct color change which was easily readable via the naked eye. We also quantitated the concentration of Ni2+ ions through flatbed scanning and scoring their pixel gray volume using image analysis software. On Styrofoam modified paper, the limit of detection was improved to 10−2 μg mL−1, which was 3-orders of magnitude lower than that observed on pristine filter paper. The MPMN reagent was highly selective towards Ni2+ in the presence of a high concentration of commonly diverse heavy metals (Ag+, Al3+, As3+, Ba2+, Cd2+, Cr3+, Fe3+, Pb2+ and Mn2+) and some other ions (Na+, Ca2+, K+ and Cl−) in water. Our developed method successfully demonstrated the semi-quantitative determination of Ni2+ ions in tap and municipal wastewater samples. Due to good specificity as well as accuracy towards Ni2+ ions, our low-cost sensor will be useful in point-of-use applications.
Starting Page	1496
Ending Page	1504
Page Count	9
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	8
Issue Number	7
Journal	Analytical Methods
DOI	10.1039/c5ay02394g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Water contact Atomic-force microscopy Styrofoam Cellulose Polymer Filter paper Hydrophobe Wastewater Reagent Pixel
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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Styrofoam modified paper as a low-cost platform for qualitative and semi-quantitative determination of Ni²⁺ ions in wastewater

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Styrofoam modified paper as a low-cost platform for qualitative and semi-quantitative determination of Ni2+ ions in wastewater

Styrofoam modified paper as a low-cost platform for qualitative and semi-quantitative determination of Ni²⁺ ions in wastewater