The adsorption of gold nanoparticles stabilized by sodium citrate on polyurethane foam (PUF) in the absence and the presence of polyhexamethyleneguanidine hydrochloride (PHMG) was studied with respect to the time of the phase contact, pH, and concentration of nanoparticles. It is shown that PUF and gold nanoparticles can be used to determine PHMG via diffuse reflectance spectroscopy (C min = 0.008 μg/mL). PHMG is determined in the model mixtures based on mineral and tap water, as well as water from the pool.

Обобщены и систематизированы литературные данные о применении наночастиц золота в спектрофотометрии. Приведены сведения о методах получения наночастиц золота и их оптических свойствах. Обсуждены основные подходы, лежащие в основе спектрофотометрического определения веществ с помощью наночастиц золота. Приведены примеры определения ионов металлов, анионов и органических соединений.

Published data on the use of gold nanoparticles in spectrophotometry are summarized. Data on methods for preparing gold nanoparticles and their optical properties are presented. The main approaches on which spectrophotometic methods of substance determination using gold nanoparticles are based are discussed. Examples of determining of metal ions, anions, and organic compounds are presented.