Photoacoustic immunoassay using sensitivity size dependency for determination of turbid solutions

Kitamori, Takehiko; Suzuki, Kazumichi; Sawada, Tsuguo; Gohshi, Yohichi

doi:10.1021/ac00147a016

Cited by 13 publications

(2 citation statements)

References 32 publications

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“…And my PhD thesis of Dr of Engineering given by The University of Tokyo in 1988 is entitled "Basic Theory of Photoacoustic Spectroscopy for Liquid and Its Application to Analytical Chemistry and Spectroscopy." I developed instrumentation and theory of photoacoustic spectroscopy 2 which was inchoately applied to liquid phase, and applied to ultra sensitive analysis, 1 immunoassay, 3 etc. 4 Nanoparticle nucleate laser breakdown was found in the process of studying photoacoustic signal generation from turbid solution by increasing the intensity of the excitation laser, 5 and the finding opened spectroscopy 6,7 and analysis 8 using breakdown plasma.…”

Section: Hitachi Period and Dr Of Engineering Workmentioning

confidence: 99%

Takehiko Kitamori

2004

Lab Chip

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Section: Hitachi Period and Dr Of Engineering Workmentioning

confidence: 99%

Takehiko Kitamori

2004

Lab Chip

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“…Kitamori et al [19] reported anomalous enhancement of photoacoustic signals, when the particle size of polystyrene is close to the wavelength of an excitation beam. They accounted this enhancement for the effect of resonance scattering.…”

Section: Polystyrene Particlesmentioning

confidence: 99%

Laser Induced Photoacoustic Spectroscopy Applied to a Study on Colloid Formation Processes

Sekine¹,

Naito

Kino³

et al. 1998

Radiochimica Acta

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Laser induced photoacoustic spectroscopy / Colloids / Radionuclide migration / Gold sols / Polystyrene particles / Tc(IV) colloids SummaryLaser induced photoacoustic spectroscopy (LPAS) was applied to determination of the concentration and size of colloid particles in aqueous solutions. The intensity of photoacoustic signals for mono-dispersed polystyrene particles in different sizes was linearly increased with an increase of the polystyrene concentration, while the proportionality was dependent on the particle size. Furthermore, dynamic measurements of colloid-particle growing of gold sols produced by the reaction of aurate ions (AuCLr) with sodium citrate was made by means of LPAS. The intensity of photoacoustic signals for polystyrene and gold particles was successfully calculated as a product of the number of particles and the absorption cross section per particle based on the Mie's light scattering theory. With this technique, the coagulation of Tc(IV) colloids was observed successfully.

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Quantitation of IgE and carcinoembryonic antigen (CEA) by optical beam deflection (OBD) measurement of dot-immunobinding assay patterns visualized by an ELISA technique

Matsuzawa

Kimura

et al. 1993

Journal of Immunological Methods

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Photoacoustic immunoassay using sensitivity size dependency for determination of turbid solutions

Cited by 13 publications

References 32 publications

Takehiko Kitamori

Takehiko Kitamori

Laser Induced Photoacoustic Spectroscopy Applied to a Study on Colloid Formation Processes

Quantitation of IgE and carcinoembryonic antigen (CEA) by optical beam deflection (OBD) measurement of dot-immunobinding assay patterns visualized by an ELISA technique

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