Japan Agency for Marine-Earth Science and Technology

National Institute for Environmental Studies

Hiroshi Koshikawa

Tetsuya Miwa

Masanobu Kawachi

Shuhei Ota

Yasuo Furushima

Shigeshi Fuchida

Shunsuke Kondo

The present invention provides a device () for detecting contamination with a photosynthesis inhibitor, the device including a collection device () configured to collect a test liquid, a light-blocking pretreatment tank () configured to store the test liquid () collected by the collection device in a state of containing phytoplankton, a stirring device configured to maintain a floating state of the phytoplankton in the test liquid stored in the pretreatment tank, an irradiation light source configured to irradiate the phytoplankton in the test liquid stored in the pretreatment tank with weak light having an underwater photon flux density that does not cause photoinhibition, a drainage conduit () configured to allow the test liquid discharged from the pretreatment tank to flow thereinto, and a fluorescence quantum efficiency measuring machine () provided for the drainage conduit and configured to measure a fluorescence quantum efficiency of the phytoplankton in the test liquid discharged from the pretreatment tank, and a method for detecting contamination with a photosynthesis inhibitor, the method including a liquid supply step, a storing and weak-light irradiation step, and a fluorescence quantum efficiency measurement step.

Device for detecting contamination with photosynthesis inhibitor and method for detecting contamination with photosynthesis inhibitor

Growing community of inventors

Ibaraki, Japan

Hiroshi Koshikawa