Lead and Pollution—an overview

Mason, Chloe

doi:10.1111/j.1753-6405.1993.tb00156.x

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…[1][2][3] Among various heavy metal toxins, lead and copper are two major toxic metal ions causing contamination from various sources like paint industry, lead pipes, brass ttings, galvanized steel pipes and corrosion of plumbing systems and medical implants. [4][5][6] They are easily accumulated in human body as they cannot be detoxied by any chemical or biological processes. Accumulation of lead can cause kidney disorder, high blood pressure or irreversible brain damage in children aged 1-5 year old.…”

Section: Introductionmentioning

confidence: 99%

Smart gold nanosensor for easy sensing of lead and copper ions in solution and using paper strips

2015

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A smart gold nanosensor, Au-TA-DNS is designed that can rapidly detect very low concentrations of Pb 2+ and Cu 2+ ions. The nanosensor develops visible blue colour in solution and on paper strips, because of the formation of nanoparticle aggregates upon binding with metal ions. Due to the presence of dansyl fluorophore, Au-TA-DNS also exhibits significant fluorescence quenching following Pb 2+ and Cu 2+ binding in aqueous medium, which is proportional to the concentration of ions. Both colorimetric and fluorometric analyses are very much selective for lead and copper ions with a detection limit of ≤10.0 ppb. The paper based sensing method has the advantage of costeffectiveness and would be useful for wide range of field-test applications such as water quality monitoring process.

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