Measurement of harmful chemicals in the environment, Measurement and control of particulate matter (PM2.5, PM0.1), Chemical decomposition of harmful chemicals (complete mineralization), Effective use of biomass (synthesis of biofuel), Reductive conversion of carbon dioxide to useful chemicals

BEng, Saitama University, 1994
MEng, Saitama University, 1996
PhD, Saitama University, 1999

Research Associate, Saitama University (Dept. of Environ. Sci. and Human Eng.), 1999-2006
Assistant Professor, Saitama University (Environ. Sci. and Civil Eng, Div.), 2007-2014
Associate Professor, Saitama University (Environ. Sci. and Civil Eng, Div.), 2014-2021
Professor, Saitama University (Mater. Sci. Div.), 2022-present
Visiting researcher, CESS (Saitama, Japan), 2001-2007
Visiting researcher, Brandenburg University of Technology (Cottbus, Germany), 2009

Fundamentals of Environmental Chemistry
Environmental Chemistry I
Experiments in Applied Chemistry III
Experiments in Applied Chemistry IV
Advanced environmental chemistry and technology (MC)
Advanced Lecture on Environmental Technologies (DC)

Truong-Thi Huyen, K. Sekiguchi* et al., Effect of indoor and outdoor emissions on the chemical compositions of PM2.5 and PM0.1 in Vietnamese residential and school buildings, Air Qual. Atmos. Health, Published online: 09 February 2024 (2024).

Y. Kurotsuchi, K. Sekiguchi* et al., Divisive refinement of metal wool fiber at the PM0.1 classification stage for PM0.5-0.1 sampling with Nanosampler, Aerosol Air Qual. Res., 23, Article No. 220439 (2023).

Truong-Thi Huyen, K. Sekiguchi*, Bich-Thuy Ly, Trung-Dung Nghiem, Assessment of traffic-related chemical components in ultrafine and fine particles in urban areas in Vietnam, Sci. Total. Environ., 858, Part 2, Article No. 159869 (2023).

Y. Kurotsuchi, K. Sekiguchi* et al., Size-segregated chemical compositions of particulate matter including PM0.1 in northern Vietnam, a highly polluted area where notable seasonal episodes occur, Atmos. Poll. Res., 13, Article No. 101478 (2022).

A. Okada, K. Sekiguchi* et al., Mechanisms for removal of gaseous toluene in headspace using sonophysical and sonochemical effects at the gas-liquid interface, J. Hazard. Mter., 423, Part B, Article No. 127221 (2022).

Truong Thi Huyen, R. Yamaguchi, Y. Kurotsuchi, K. Sekiguchi* et al., Characteristic of chemical components in fine particles (PM2.5) and ultrafine particles (PM0.1) in Hanoi, Vietnam: A case study in two seasons with different humidity, Water Air Soil Poll., 232, Article No. 183 (2021).

F. Yasui, K. Sekiguchi* et al., Complete decomposition of 2-propanol using immobilized on a nonwoven fabric under UV light irradiation by adding H2O2 and O3 microbubbles, Water Air Soil Poll., 232, Article No. 175 (2021).

K. Sekiguchi* et al., Capturing of gaseous and particulate pollutants into liquid phase by a water/oil column using microbubbles, Chemosphere, 256, Article No. 126996 (2020).

S. Komae, K. Sekiguchi* et al., Secondary organic aerosol formation from p-dichlorobenzene under indoor environmental conditions, Build. Environ., 174, Article No. 106758 (2020).

Y. Ono, K. Sekiguchi* et al., Improved ultrasonic degradation of hydrophilic and hydrophobic aldehydes in water by combined use of atomization and UV irradiation onto the mist surface, Ultrason. Sonochem., 60, Article No. 104766 (2020).

F. Yasui, K. Sekiguchi* et al., Decomposition of 2-propanol in the liquid phase using a photocatalyst immobilized on nonwoven fabric and ozone microbubbles, Water Air Soil Poll., 230, Article No. 252 (2019).

N. Ishikawa, K. Sekiguchi*, Measurements of the size and composition of Volatile particles generated from a heated tobacco product with aerosol fixation agents, Aerosol Air Qual. Res., 18, 2538-2549 (2018).

N. T. T. Thuy, N. T. Dung, K. Sekiguchi* et al., Mass concentrations and carbonaceous compositions of PM, PM and PM at urban locations in Hanoi, Vietnam, Aerosol Air Qual. Res., 18, 1591-1605 (2018).

K. Sekiguchi* et al., Combined sonochemical and short-wavelength UV degradation of hydrophobic perfluorinated compounds, Ultrason. Sonochem., 39, 87-92 (2017).

K. Sekiguchi* et al., Ozone catalytic oxidation of gaseous toluene over MnO2-based ozone decomposition catalysts immobilized on a nonwoven fabric, Aerosol Air Qual. Res., 17, 2110-2118 (2017).

T. Kudo, K. Sekiguchi* et al., Effect of ultrasonic frequency on size distributions of nanosized mist generated by ultrasonic atomization, Ultrason. Sonochem., 37, 16-22 (2017).

N. Ishikawa, K. Sekiguchi*, Influence of volatilization from mainstream tobacco smoke particles on the gas-particle distribution in annular denuders, Aerosol Sci. Technol., 51, 642-652 (2017).