Accurate Determination of TiO2 Nanoparticles in Complex Matrices using the Agilent 8900 ICP-QQQ Authors
نویسنده
چکیده
Titanium dioxide (TiO2) nanoparticles (NPs) are widely used in paints, food colorants, cosmetics, pharmaceuticals, and many other applications. Due to their high refractive index, TiO2 NPs are common ingredients in sun protection products used to guard against UV exposure. However, the fate of NPs in the environment and the potential for toxic effects once absorbed into the body remain largely unknown. Many researchers have investigated different methodologies to measure TiO2 NPs in cosmetic or food samples [1, 2, 3, 4]. TiO2 NPs have three principal levels of structure, beginning with nanoscale crystallites. These crystals fuse to form ‘hard’ nanoscale aggregates, which in turn associate to form microscale agglomerates [5]. When aqueous dispersions of TiO2 NPs are prepared, the particle sizes observed are the aggregation or agglomeration sizes, which are usually different from (larger than) the primary (crystal) particle Accurate Determination of TiO2 Nanoparticles in Complex Matrices using the Agilent 8900 ICP-QQQ
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