Determination of nanopowders using microwave plasma optical emission spectrometry operating in a single particle mode

Basic and advanced spectrometric methods for complete nanoparticles characterization in bio/eco systems: current status and future prospects

“…Borowska et al proposed new MIP-OEStechnique operating in a single-particle mode for characterizing powder nanomaterials [ 74 ]. In this technique, nanopowders were introduced to a helium plasma by pneumatic nebulization based on fluidized bed approach and measured with a time resolution of 4–20 ms.…”

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

“…Another new technique for the analysis of individual particles by MIP-OES was developed by Borowska et al 65 The sample introduction tube, which was the key part of the device, consisted of a vertical glass tube, flared to include a conical dilution chamber. A few mg of sample NPs were placed on a frit at the bottom of the tube, the whole thing mechanically agitated, then particles transported up the tube to the dilution chamber using He carrier gas, so NPs were directly introduced into a MIP-OES instrument one particle at a time.…”

Investigation of interaction between biogenic selenium nanoparticles and human serum albumin using microwave plasma optical emission spectrometry operating in a single-particle mode

“…The nanoparticles transport efficiency and signal integration time are the most important parameters affecting data acquisition. To obtain representative signal for a single selenium nanoparticle, an integration time ranging from 5 to 50 ms should be used and transport efficiency should be lower than 50 particles per second [18]. The carrier gas flow rate directly affects nanoparticles transport efficiency.…”

“…Absorbance measurements for Bradford assay were done using a V-730 UV-Vis spectrophotometer (JASCO, Germany) with plastic cuvettes of 1 cm optical path. Selenium nanoparticles and selenium nanoparticle-human serum albumin conjugates were characterized using single-particle microwave plasma optical emission spectrometry described in detail in our previous study [18]. The single-particle microwave plasma optical emission spectrometry experimental set-up consisted of six-phase rotating field 2.45 GHz microwave plasma source (Ertec-Poland, Wrocław, Poland) as an excitation source and miniature optical spectrometer AvaSpec-2048XL with Optical Fiber FC-UV800-2-ME-SR (Avantes, Netherland) operating in time resolved analysis (TRA) mode as an OES detection system.…”

“…The goal of this study was to investigate the chemical composition and size distribution of selenium nanoparticle-human serum albumin conjugates prepared in nanopowder form and subsequently characterized by single particle microwave plasma optical emission spectrometry [18]. The feasibility of single particle microwave plasma optical emission spectrometry as a promising tool for detection and sizing of selenium nanoparticles and selenium nanoparticle-human serum albumin conjugates, providing information about their elemental composition, size, dispersity, and agglomeration or aggregation is described for the first time.…”