This document summarizes a method for detecting lead in wastewater using gold nanoparticles. It first discusses the properties of nanoparticles and why detecting lead is important for health. It then outlines four common methods for detecting lead and describes a new method using gold nanoparticles developed by Dr. Nilotpala Pradhan. This method utilizes the optical properties of gold nanoparticles to detect lead through a simple and rapid one-step process that is cost-effective, accurate, and easy to administer.
3. • Nanoparticle.
• Properties.
• Why to detect lead in waste water ?
• Methods to detect lead.
• Detection of lead by nanogold.
• Gold nanoparticle.
• Detection process.
• Advantages.
4. • A nanoparticle is a microscopic particle with at
least one dimension less than 100 nm.
• Nanotechnology, a particle is defined as a
small object that behaves as a whole unit with
respect to its transport
and other properties.
• Nanoparticles are of
great scientific interest.
5. • Single unit of nanoparticle behave as whole
unit.
• High driving force of diffusion.
• Core-shell nanoparticle are
dual in nature.
• Low melting temperature.
• High absorption capacity.
• Can reform nanomaterial.
6. Lead can cause-
1. Damage brain and nervous system in children.
2. Damage kidneys in adults.
3. Complications during pregnancy.
4. Lead to birth defects.
7. Lead in the waste water can be
determine by-
1. Measuring atomic absorption.
2. Striping voltametry.
3. Chelation extraction.
4. Using graphite furnace
8. • Invented by Dr Nilotpala Pradhan & et al at the
CSIR-Institute of Minerals and Materials
Technology, Bhubaneswar.
• The results have been published in journal
Scientific Reports.
• Uses the optical property.
• The method is not commerciallised.
