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Development of a method for measuring physical parameters of nanoparticles present in water using IG-1000 Plus analyzer
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A new technique using induced lattice analysis with granulometric pre-separation was developed and certified in Russia for measuring nanoparticle size, shape, zeta potential, and elemental composition in water, including selective extraction of polystyrene particles. This analytical method is directly valuable for microplastic pollution research as it enables detection and physical characterization of nanoplastic particles in natural and drinking water samples.
A technique for determining physical parameters of nanoparticles in water by the induced lattice method with their preliminary granulometric separation is proposed. Methods for water sample preparation are recommended. Microflora nanoparticles were identified after heat treatment of a water sample in a microwave sample preparation system. Diamagnetic nanoparticles in water were separated in a magnetic field. Results of determination of Fe and Ni by mass spectrometry showed that good separation of ferromagnetic particles in the magnetic field. Solid polymer materials were extracted from water by hexane. Selective extraction of polystyrene particles from aqueous solutions was established. Physical parameters of the particles were measured using an IG-1000 Plus particle size analyzer (Shimadzu, Japan). The measurement parameters were optimized. The developed technique was used for determining shape, composition, number, surface area, diffusion coefficient and zeta potential of particles, mass concentration of elements in natural and drinking water. The methodology was included in the unified register of certified methods in the territory of the Russian Federation (FR.1.31.2025.52154). Analysis of the granulometric composition of suspended particles in water can be used to validate water purification methods at water treatment plants and assess the effect of particles on possible toxic effects after they enter the body.
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