News Column

Studies from Center for Nanoscience and Nanotechnology in the Area of Biological Pigments Reported

May 27, 2014



By a News Reporter-Staff News Editor at Life Science Weekly -- New research on Biological Factors is the subject of a report. According to news reporting from Gandhigram, India, by NewsRx journalists, research stated, "The present study reports the electrochemical determination of nitrite ion using citrate-gold nanopartides (cit-AuNPs) decorated on meso-tetra(para-aminophenyl)porphyrinatocobalt(II) (Co(II)MTpAP) self-assembled glassy carbon electrode (GCE). The decoration of cit-AuNPs on Co(II)MTpAP was achieved with the aid of amine groups present on the surface of the self-assembled monolayer (SAM) of Co(II)MTpAP."

The news correspondents obtained a quote from the research from Center for Nanoscience and Nanotechnology, "The SEM image shows that the cit-AuNPs were densely packed on Co(II)MTpAP. The AuNPs decorated electrode was successfully used for the determination of nitrite ion. The cit-AuNPs decorated electrode not only shifted nitrite ion oxidation potential towards less positive potential but also greatly enhanced its current when compared to bare and Co(II)MTpAP SAM modified electrodes. The ampero-metric current increases linearly while increasing the concentration of nitrite ion ranging from 0.5 x 10(-6) to 4.7 x 10(-6) M and the detection limit was found to be 60 nM (S/N=3). Further, the modified electrode was successfully used to determine nitrite ion in the presence of 200-fold excess of common interferents such as Na,(+) NO3-, I-, K+, CO32-, Ca2+, SO42-, NH4+, Cl- and glucose."

According to the news reporters, the research concluded: "The practical application of the cit-AuNPs decorated electrode was demonstrated by determining nitrite ion in water samples."

For more information on this research see: Gold nanoparticles decorated on cobalt porphyrin-modified glassy carbon electrode for the sensitive determination of nitrite ion. Journal of Colloid and Interface Science, 2014;421():78-84. Journal of Colloid and Interface Science can be contacted at: Academic Press Inc Elsevier Science, 525 B St, Ste 1900, San Diego, CA 92101-4495, USA. (Elsevier - www.elsevier.com; Journal of Colloid and Interface Science - www.elsevier.com/wps/product/cws_home/622861)

Our news journalists report that additional information may be obtained by contacting P. Muthukumar, Gandhigram Rural Inst, Center Nanosci & Nanotechnol, Dept. of Chem, Gandhigram 624302, Dindigul, India (see also Biological Factors).

Keywords for this news article include: Asia, India, Cobalt, Gandhigram, Porphyrins, Nanotechnology, Biological Factors, Gold Nanoparticles, Biological Pigments, Transition Elements, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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