Title:
DEVICE FOR DETECTING CONTAMINATION WITH PHOTOSYNTHESIS INHIBITOR AND METHOD FOR DETECTING CONTAMINATION WITH PHOTOSYNTHESIS INHIBITOR
Document Type and Number:
WIPO Patent Application WO/2020/166489
Kind Code:
A1
Abstract:
A device (1) for detecting contamination with a photosynthesis inhibitor, the device including: a collection device (10) for collecting a test liquid (2); a light-blocking pre-treatment tank (21) that holds the test liquid collected by the collection device such that the test liquid is holding phytoplankton; a stirring device that is for maintaining suspension of the phytoplankton in the test liquid held in the pre-treatment tank; an irradiation light source that irradiates weak light that has an underwater photon flux density that does not cause photoinhibition at the phytolankton in the test liquid held in the pre-treatment tank; a drainage conduit (40) through which test liquid that has been discharged from the pre-treatment tank is made to flow; and a fluorescence quantum yield measurement apparatus (50) that is provided on the drainage conduit and measures the fluorescence quantum yield of the phytoplankton in the test liquid that has been discharged from the pre-treatment tank. A method for detecting contamination with a photosynthesis inhibitor, the method including a liquid supply step, a holding and weak-light irradiation step, and a fluorescence quantum yield measurement step.
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Inventors:
KOSHIKAWA HIROSHI (JP)
KAWACHI MASANOBU (JP)
FUCHIDA SHIGESHI (JP)
OTA SHUHEI (JP)
MIWA TETSUYA (JP)
FURUSHIMA YASUO (JP)
KONDO SHUNSUKE (JP)
KAWACHI MASANOBU (JP)
FUCHIDA SHIGESHI (JP)
OTA SHUHEI (JP)
MIWA TETSUYA (JP)
FURUSHIMA YASUO (JP)
KONDO SHUNSUKE (JP)
Application Number:
PCT/JP2020/004646
Publication Date:
August 20, 2020
Filing Date:
February 06, 2020
Export Citation:
Assignee:
NAT INSTITUTE FOR ENVIRONMENTAL STUDIES (JP)
JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECH (JP)
JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECH (JP)
International Classes:
C12M1/34; G01N21/05; G01N21/64
Foreign References:
| JP2015008676A | 2015-01-19 | |||
| JP2004533853A | 2004-11-11 | |||
| US20120184440A1 | 2012-07-19 | |||
| JP2019026026A | 2019-02-21 | |||
| JP2006284335A | 2006-10-19 |
Other References:
SCHREIBER, U., PULSE-AMPLITUDE-MODULATION (PAM) FLUOROMETRY AND SATURATION PULSE METHOD: AN OVERVIEW, 2004
JOSHI, M.K.MOHANTY, P.: "Chlorophyll a Fluorescence: A Signature of Photosynthesis", 2004, SPRINGER, article "Chlorophyll a Fluorescence as a Probe of Heavy Metal Ion Toxicity in Plants", pages: 637 - 661
SJOLLEMA, S.B.MARTINEZGARCIA, G.VAN DER GEEST, H.G.KRAAK, M.H.S.BOOIJ, P.VETHAAK, A.D.ADMIRAAL, W.: "Hazard and risk of herbicides for marine microalgae", ENVIRONMENTAL POLLUTION, vol. 187, 2014, pages 106 - 111, XP028615813, DOI: 10.1016/j.envpol.2013.12.019
See also references of EP 3926033A4
JOSHI, M.K.MOHANTY, P.: "Chlorophyll a Fluorescence: A Signature of Photosynthesis", 2004, SPRINGER, article "Chlorophyll a Fluorescence as a Probe of Heavy Metal Ion Toxicity in Plants", pages: 637 - 661
SJOLLEMA, S.B.MARTINEZGARCIA, G.VAN DER GEEST, H.G.KRAAK, M.H.S.BOOIJ, P.VETHAAK, A.D.ADMIRAAL, W.: "Hazard and risk of herbicides for marine microalgae", ENVIRONMENTAL POLLUTION, vol. 187, 2014, pages 106 - 111, XP028615813, DOI: 10.1016/j.envpol.2013.12.019
See also references of EP 3926033A4
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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