978-0-9798064-0-7/μTAS2007/$20©2007CBMS 251 Figure 1: ASV measurement of heavy metal using planar Bi electrode. (a) Pb and Cd start to deposit on the electrode at preconcentration potential; (b) deposited metals form multicomponent alloys with Bi; (c) Cd is first stripped from the electrode, and generates a peak current at its reduction potential, and (d) Pb is stripped off and generates anothe...

Although silicon (Si) is the second most abundant element both on the surface of the Earth's crust and in soils, it has not yet been listed among the essential elements for higher plants. However, the beneficial role of Si in stimulating the growth and development of many plant species has been generally recognized. Silicon is known to effectively mitigate various abiotic stresses such as manga...

A BiNPs@NPCGS nanocomposite was designed for highly efficient detection of multiple heavy-metal ions by in situ synthesis of bismuth-nanoparticle (BiNP)-enriched nanoporous carbon (NPS) on graphene sheet (GS). The NPCGS was prepared by pyrolysis of zeolitic imidazolate framework-8 (ZIF-8) nanocrystals deposited on graphene oxide and displayed a high surface area of 1251 m(2)  g(-1) and a pore s...

In this study removal of nickel(II) from aqueous solutions by adsorption on to Palmyra palm fruit seed carbon (PPFSC) and commercial activated carbon (CAC) was investigated as a function of agitation time, pH, and carbon dosage on the adsorption capacity has been studied. The metal adsorption yields increased with the increasing adsorbent dosage and contact time and reached to equilibrium for b...

We have built a high-resolution differential surface plasmon resonance (SPR) sensor for heavy metal ion detection. The sensor surface is divided into a reference and sensing areas, and the difference in the SPR angles from the two areas is detected with a quadrant cell photodetector as a differential signal. In the presence of metal ions, the differential signal changes due to specific binding ...