||My specialty is the environmental quality monitoring and assessment for environment conservation. The environmental quality monitoring and assessment are very useful for clarifying the temporal and regional trends with field investigation, analytical chemistry and data analyses in atmospheric, edaphic and aquatic ecosystems. The living things including human body mostly consist of water around 60-90%. Water is one of the extremely important substances that are indispensable not only to humans but also to ecosystems, agriculture, fisheries and industry. I have been focusing water quality monitoring and assessment in rivers, lakes and groundwaters. Especially, I have elucidated the characteristic classification, land use history and pollution sources of nitrate-contaminated well water (groundwater) where it is difficult to identify the pollution source. The well water has been recognized as not only an important water resource but also the last water resource for the human being under the condition of serious surface water pollutions or natural disasters. However, the current situation is that the groundwater nitrate nitrogen pollution is spreading especially in agricultural land areas worldwide.
The type of research is based on long-term monitoring study with field works, experimental works, analytical chemistry (quantitative analysis) and data analyses. Research results are clarified through presentations at international conferences and publications in journals.
|Research Field(Keyword & Summary)
- (1) Water quality monitoring & assessment
This research aims to clarify the water pollution mechanisms and spatiotemporal variations with field investigation, analytical chemistry and data analyses in various water environments (e.g.: rivers, lakes, groundwaters). We also estimate and predict long-term water qualities and spatiotemporal trends as useful data for their improvements. We also suggest that the water quality monitoring and assessment is one of the useful tools for the water quality conservation and the sustainable and optimal point of water intake in drinking water reservoirs.
- (2) Air quality monitoring & assessment
This research aims to clarify the spatiotemporal variation of chemical properties in acid rain, atmospheric deposition concentration/rate, open bulk precipitation, throughfall and stemflow with field investigation, analytical chemistry and data analyses in various air environments (e.g.: open bulk area, forest area). We also estimate and predict the long-term trend of acid rain and atmospheric deposition rate as useful data for the improvement. We also suggest that the air quality monitoring and assessment is one of the useful tools for the air quality conservation.
- (3) Soil quality monitoring & assessment
This research aims to clarify the level of soil degradation with the soil chemical properties in various soil environments (e.g.: agricultural soils, forest soils). We also estimate and predict the potential risk of soil acidification and the change of soil chemical properties under the condition of ecological disturbance by human activities. We also suggest that the soil quality monitoring and assessment is one of the useful tools for mitigating soil degradation and strengthening sustainability.
- (1) Using citizen science to evaluate the effect of treated sewage on the water environment, Journal of Japan Society on Water Environment, Vol.39, No.5, July 2016.
- (2) Distribution of antibiotic resistance in urban watershed in Japan, Environmental Pollution, Vol.162, March 2012.
- (3) Ammonium nitrogen deposition as a dominant source of nitrogen in a forested watershed experiencing acid rain in Central Japan、Water, Air, & Soil Pollution, Vol.212、№1-4、October 2010.
- (4) Occurrence of antibiotic resistant E. coli in surface water: A study in a typical urban watershed, Korea、Water Practice & Technology、Vol.5、№3、September 2010.
- (5) Effects of combined sewer overflow and stormwater on indicator bacteria concentrations in the Tama River due to the high population density of Tokyo Metropolitan area、Environmental Monitoring and Assessment、Vol.152、№1-4、May 2009.
- (6) Influence of treated sewage effluent on organic pollution assessment in the Sakai River basin in Central Japan、Environmental Monitoring and Assessment、Vol.151、№1-4、April 2009.
- (7) Highly sensitive determination of total dissolved aluminum in water samples using capillary electrophoresis with on-line preconcentration method、Bunseki Kagaku、Vol.56、No.6、June 2007
- (8) Estimation of selenium concentration in shallow groundwater in alluvial fan area in Tsukui, Central Japan、Environmental Monitoring and Assessment、Vol.125、№1-3、February 2007.
- (9) Contribution of dissolved organic nitrogen deposition to nitrogen saturation in a forested mountainous watershed in Tsukui, Central Japan、Water, Air, and Soil Pollution、Vol.178、№1-4、January 2007.
- (10) Contribution of dissolved organic nitrogen deposition to total dissolved nitrogen deposition under intensive agricultural activities、Water, Air, and Soil Pollution、Vol.178、№1-4、January 2007.
||The Best Poster Presentation Award for the 13th IWA International Specialized Conference on Diffuse Pollution and Integrated Watershed Management、October 2009.
|Grant-in-Aid for Scientific Research Support: Japan Society for Promotion of Science (JSPS)
|Recruitment of research assistant(s)
|Affiliated academic society (Membership type)
||(1) Japan Association on the Environmental Studies (Regular member)
(2) Japan Society on Water Environment (Regular member)
|Education Field (Undergraduate level)
||Environmental Laboratory Exercises for Instrumental Analysis, Environmental Quality Monitoring
|Education Field (Graduate level)
||Advanced Environmental Quality Monitoring