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Yamaguchi T. Laser scattering centrifugal liquid sedimentation method for the accurate quantitative analysis of mass-based size distributions of colloidal silica. ANAL SCI 2023:10.1007/s44211-023-00321-9. [PMID: 36966479 DOI: 10.1007/s44211-023-00321-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/08/2023] [Indexed: 03/27/2023]
Abstract
This paper proposes a laser scattering centrifugal liquid sedimentation (LS-CLS) method for the accurate quantitative analysis of the mass-based size distributions of colloidal silica. The optics comprised a laser diode light source and multi-pixel photon-counting detector for detecting scattered light intensity. The unique optics can only detect the light scattered by a sample through the interception of irradiated light. The developed centrifugal liquid sedimentation (CLS) method comprised a light-emitting diode and silicon photodiode detector for detecting transmittance light attenuation. The CLS apparatus could not accurately measure quantitative volume- or mass-based size distribution of poly-dispersed suspensions, such as colloidal silica, because the detecting signal includes both transmitted and scattered light. The LS-CLS method exhibited improved quantitative performance. Moreover, the LS-CLS system allowed the injection of samples with concentrations higher than that permitted by other particle size distribution measurement systems with particle size classification units using size-exclusion chromatography or centrifugal field-flow fractionation. The proposed LS-CLS method achieved an accurate quantitative analysis of the mass-based size distribution using both centrifugal classification and laser scattering optics. In particular, the system could measure the mass-based size distribution of approximately 20 mg mL-1 poly-dispersed colloidal silica samples, such as in a mixture of the four mono-dispersed colloidal silica, with high resolution and precision, thereby demonstrating high quantitative performance. The measured size distributions were compared with those observed through transmission electron microscopy. The proposed system can be used in practical setups to achieve a reasonable degree of consistency for determining particle size distribution in industrial applications.
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Affiliation(s)
- Tetsuji Yamaguchi
- HORIBA, Ltd., 2 Miyanohigashi, Kisshoin, Minami, Kyoto, 601-8510, Japan.
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2
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Metanawin T, Panutumrong P, Metanawin S. Synthesis of Polyurethane/TiO
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Hybrid with High Encapsulation Efficiency Using One‐Step Miniemulsion Polymerization for Methylene Blue Degradation and its Antibacterial Applications. ChemistrySelect 2023. [DOI: 10.1002/slct.202204522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Tanapak Metanawin
- Department of Materials and Production Technology Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand
| | - Praripatsaya Panutumrong
- Department of Materials and Production Technology Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand
| | - Siripan Metanawin
- Department of Textile Engineering Faculty of Engineering Rajamangala University of Technology Thanyaburi Pathum Thani 12120 Thailand
- Advanced Materials Design Development (AMDD) Research Unit Faculty of Engineering Rajamangala University of Technology Thanyaburi Pathum Thani 12110 Thailand
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3
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Li B, Chua SL, Yu D, Chan SH, Li A. Separation and size characterization of highly polydisperse titanium dioxide nanoparticles (E171) in powdered beverages by using Asymmetric Flow Field-Flow Fractionation hyphenated with Multi-Angle Light Scattering and Inductively Coupled Plasma Mass Spectrometry. J Chromatogr A 2021; 1643:462059. [PMID: 33780882 DOI: 10.1016/j.chroma.2021.462059] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 02/19/2021] [Accepted: 03/07/2021] [Indexed: 10/21/2022]
Abstract
The application of titanium dioxide as E171 food additive has become an issue of debate due to numerous reports that titanium dioxide nanoparticles (TiO2 NPs) inside the products may pose risks to human health. However, there is still a lack of an official standardized methodology for the detection and size characterization of TiO2 particles in foods containing E171. In this study, a method was presented for size characterization of TiO2 particles with various independent verifications in coffee creamer and instant drink powders, using Asymmetric Flow Field-Flow Fractionation hyphenated with Multi-Angle Light Scattering and Inductively Coupled Plasma Mass Spectrometry (AF4-MALS-ICP-MS). TiO2 particles from these products were well extracted, followed by their optimized AF4 separation using anionic surfactant Sodium Dodecyl Sulfate (SDS) (0.05%, pH 9) and mixed surfactant NovaChem (0.2%), respectively. Size determination of TiO2 NPs was conducted based on AF4 calibration with polystyrene nanospheres and verification with TiO2 NPs standard suspension of 100 nm under two different AF4 conditions. The TiO2 particle sizes detected ranged from 24.4 - 544.3 nm for coffee creamer and 27.7 - 574.3 nm for instant drink powders, with the TiO2 NPs detection recoveries of 75% and 92%, respectively. Hydrodynamic diameters from AF4 size calibration could be independently validated by the gyration diameters from online MALS measurement. The established approach was demonstrated to be reliable and pragmatic for size profiling of highly polydisperse TiO2 particles and thus useful for monitoring E171 in similar foodstuffs.
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Affiliation(s)
- Bin Li
- National Centre for Food Science, Singapore Food Agency, 10 Perahu Road, Singapore 718837, Singapore
| | - Sew Lay Chua
- National Centre for Food Science, Singapore Food Agency, 10 Perahu Road, Singapore 718837, Singapore
| | - Dingyi Yu
- National Centre for Food Science, Singapore Food Agency, 10 Perahu Road, Singapore 718837, Singapore.
| | - Sheot Harn Chan
- National Centre for Food Science, Singapore Food Agency, 10 Perahu Road, Singapore 718837, Singapore
| | - Angela Li
- National Centre for Food Science, Singapore Food Agency, 10 Perahu Road, Singapore 718837, Singapore
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4
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Yamaguchi T, Mori T, Aoki K, Oda R, Yasutake M, Nakamura A, Takahashi K, Sigehuzi T, Kato H. Characterization of the Volume-based or Number-based Size Distribution for Silica Nanoparticles Using a Unique Combination of Online Dynamic Light Scattering Having a Uni-tau Multi-bit Correlator and High-resolution Centrifugal Field-Flow Fractionation Separator. ANAL SCI 2020; 36:761-765. [PMID: 32009021 DOI: 10.2116/analsci.19p351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/22/2020] [Indexed: 08/09/2023]
Abstract
This paper presents a study of the size distributions of colloidal nanoparticles using an online dynamic light scattering (DLS) unit with a uni-tau multi-bit correlator (UMC) combined with a centrifugal field-flow fractionation (CF3) separator. Conventionally, the FFF-UV-MALS system utilizing field-flow fractionation (FFF) combined with a UV detector and multi-angle light scattering instrument (MALS) could be used to obtain the particle size distribution of colloidal nanoparticles. Lately, DLS as a technique to measure the size distributions of colloid materials has become prevalent. However, the DLS instrument will practically measure only the large particles in a multi-modal particle mixture. Therefore, the CF3-DLS w/UMC system that was developed consisted of a CF3 unit connected to an online DLS instrument with UMC. The system could measure the volume- or number-based size distribution with highly quantitative and accurate histograms for multi-modal samples. The size distributions were validated with size distributions obtained by images of an atomic force microscope (AFM). Two types of colloidal silica nanoparticles with different distribution widths were used in this study.
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Affiliation(s)
- Tetsuji Yamaguchi
- HORIBA, Ltd., 2 Miyanohigashi, Kisshoin, Minami, Kyoto, 601-8510, Japan.
| | - Tetsuya Mori
- HORIBA, Ltd., 2 Miyanohigashi, Kisshoin, Minami, Kyoto, 601-8510, Japan
| | - Kengo Aoki
- Shimadzu Corporation, 1 Kuwabara, Nishinokyo, Nakagyo, Kyoto, 604-8511, Japan
| | - Ryutaro Oda
- Shimadzu Corporation, 1 Kuwabara, Nishinokyo, Nakagyo, Kyoto, 604-8511, Japan
| | - Masatoshi Yasutake
- Hitachi High-Technologies Corporation, 36-1 Takenoshita, Oyama, Sunto, Shizuoka, 410-1393, Japan
| | - Ayako Nakamura
- National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Kayori Takahashi
- National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Tomoo Sigehuzi
- National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Haruhisa Kato
- National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
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5
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Defante AP, Vreeland WN, Benkstein KD, Ripple DC. Using Image Attributes to Assure Accurate Particle Size and Count Using Nanoparticle Tracking Analysis. J Pharm Sci 2017; 107:1383-1391. [PMID: 29277640 DOI: 10.1016/j.xphs.2017.12.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/01/2017] [Accepted: 12/12/2017] [Indexed: 11/24/2022]
Abstract
Nanoparticle tracking analysis (NTA) obtains particle size by analysis of particle diffusion through a time series of micrographs and particle count by a count of imaged particles. The number of observed particles imaged is controlled by the scattering cross-section of the particles and by camera settings such as sensitivity and shutter speed. Appropriate camera settings are defined as those that image, track, and analyze a sufficient number of particles for statistical repeatability. Here, we test if image attributes, features captured within the image itself, can provide measurable guidelines to assess the accuracy for particle size and count measurements using NTA. The results show that particle sizing is a robust process independent of image attributes for model systems. However, particle count is sensitive to camera settings. Using open-source software analysis, it was found that a median pixel area, 4 pixels2, results in a particle concentration within 20% of the expected value. The distribution of these illuminated pixel areas can also provide clues about the polydispersity of particle solutions prior to using a particle tracking analysis. Using the median pixel area serves as an operator-independent means to assess the quality of the NTA measurement for count.
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Affiliation(s)
- Adrian P Defante
- Bioprocess Measurements Group, National Institute of Standards and Technology, Gaithersburg, Maryland 20899.
| | - Wyatt N Vreeland
- Bioprocess Measurements Group, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
| | - Kurt D Benkstein
- Bioprocess Measurements Group, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
| | - Dean C Ripple
- Bioprocess Measurements Group, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
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Asymmetric flow field flow fractionation with light scattering detection – an orthogonal sensitivity analysis. J Chromatogr A 2016; 1473:122-132. [DOI: 10.1016/j.chroma.2016.10.063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 10/25/2016] [Accepted: 10/26/2016] [Indexed: 11/18/2022]
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7
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Williams PS. Fractionating power and outlet stream polydispersity in asymmetrical flow field-flow fractionation. Part I: isocratic operation. Anal Bioanal Chem 2016; 408:3247-63. [DOI: 10.1007/s00216-016-9388-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 02/02/2016] [Indexed: 11/27/2022]
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