Analytical strategy to detect metal nanoparticles in mixtures without previous separation

作者：Pacioni Natalia L^*; Veglia Alicia V^*

来源：Sensors and Actuators B: Chemical , 2016, 228: 557-564.

DOI：10.1016/j.snb.2016.01.064

• Gold nanoparticle
• Silver nanoparticle
• Rosolic Acid
• Basic Fuchsin
• Spectroscopic changes

Citrate-stabilized silver and gold nanoparticles were detected at the pmol L91 level in aqueous mixtures without previous separation by using Basic Fuchsin (BF) as molecular probe. The method was validated by application to spiked drinking water. In addition, another acid-base indicator, Rosolic Acid (RA) permitted the semiquantitative detection of mixtures containing two different kinds of silver nanoparticles. The proposed strategy represents a fast, simple and cost-effective methodology to determine mixed metal nanomaterials, being sensitive to metal identity and ligands on the metal surface.

• 出版日期2016-6-2