This study measured ventilation volumes and particle concentrations in indoor environments with open windows doors. In addition, the effect of airflow mode air conditioner on volume concentration variations was also measured. The fan could only provide approximately 43% during design phase. amount differed depending opening area increased by multiple or doors, even when same. No significant cha...

Trace metals in aerosols were observed at an urban site (Kumamoto, Kyushu, Japan) and a rural site (Cape Hedo, Okinawa, Japan) to investigate the relative contributions of transboundary air pollutants from mainland Asia and local air pollutants in western Japan. We used a cascade impactor to collect aerosols in five size classes. We apportioned the sources of the air masses on the basis of elem...

Persistent organic pollutants (POPs) are manmade organic chemicals that remain in the environment for years or decades. POPs are of special concern because they often remain toxic for decades or longer after release to the environment. The more persistent a toxic chemical is, the greater the probability for human exposure over time. Because they circulate globally long after being released into...

Industrial development has created a serious problem by emitting waste water containing many different kinds of pollutants including heavy metals. There are several chemical and physical processes for heavy metals removal but bioremediation technology has also good prospect. As the waste water from different industries is deposited in the rivers nearby so aquatic flora are needed to be studied ...

Passive sampling devices have been used since the 1970s to measure time-weighted average (TWA) or equilibrium concentrations of pollutants in various environmental matrices (e.g. air, soils and sediments and water). In recent years the popularity of using such samplers has increased and the technology in now well established for the measurement of atmospheric pollutants. This sector has a long ...