Title:
ANALYZING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2007/119399
Kind Code:
A1
Abstract:
Concentration of impurities contained in ultrapure water, process water or
the like can be analyzed at a high accuracy and continuously. A part of a liquid
to be measured is introduced into an absorption spectrometry section (2c) from
a prescribed line. The liquid is irradiated with excitation light (Le) from
an excitation light irradiation system (10), and a measurement target region
(AS), which is generated by photothermal effects of the impurities in the liquid,
is irradiated with measuring light (Lm) from a measuring light irradiation system
(20). The phase change of the measuring light (Lm) is detected by a prescribed
optical system and a light detector (36), and the impurity concentration in the
liquid is obtained based on the phase change.
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Inventors:
TAKAHASHI EIJI
KATAYAMA RYO
KANNAKA MASATO
TAKAMATSU HIROYUKI
KATAYAMA RYO
KANNAKA MASATO
TAKAMATSU HIROYUKI
Application Number:
PCT/JP2007/055382
Publication Date:
October 25, 2007
Filing Date:
March 16, 2007
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
TAKAHASHI EIJI
KATAYAMA RYO
KANNAKA MASATO
TAKAMATSU HIROYUKI
TAKAHASHI EIJI
KATAYAMA RYO
KANNAKA MASATO
TAKAMATSU HIROYUKI
International Classes:
G01N21/17; G01N21/41; G01N25/16
Domestic Patent References:
| WO2005121767A1 | 2005-12-22 |
Foreign References:
| JP2004053356A | 2004-02-19 | |||
| JP2004219094A | 2004-08-05 | |||
| JP2004301520A | 2004-10-28 | |||
| JPH0215814B2 | 1990-04-13 | |||
| JP3306828B2 | 2002-07-24 | |||
| JP2003294596A | 2003-10-15 | |||
| JP2000356611A | 2000-12-26 | |||
| JP2006084431A | 2006-03-30 | |||
| JP2003149135A | 2003-05-21 | |||
| JP2004053356A | 2004-02-19 | |||
| JP2004219094A | 2004-08-05 | |||
| JP2004301520A | 2004-10-28 | |||
| EP1691189A2 | 2006-08-16 | |||
| EP0310740A2 | 1989-04-12 |
Other References:
SAKODA N. ET AL.: "Laser Kansho Konetsu Henkanho ni yoru Biryo Seitai Bunshi no Kenshutsu (II)", 2005 NEN (HEISEI 17 NEN) SHUNKI DAI 52 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU, vol. 3, 2005, pages 1135 + ABSTR. NO. 30P-ZF-18, XP003018572
TAKAHASHI E.: "Laser Kansho Konetsu Henkanho ni yoru Kokando Kyuko Bunseki", THE JAPAN SOCIETY FOR ANALYTICAL CHEMISTRY DAI 54 NENKAI KOEN YOSHISHU, 2005, pages 186 + ABSTR. NO. H1010, XP003018573
JANE HODGKINSON ET AL.: "Photothermal detection of trace compounds in water, using the deflection of a water meniscus", MEASUREMENT SCIENCE AND TECHNOLOGY, vol. 9, 1998, pages 1316 - 1323
JANE HODGKINSON ET AL.: "Photothermal detection of trace optical absorption in water by use of visible- light-emitting diodes", APPLIED OPTICS, vol. 37, no. 31, 1 November 1998 (1998-11-01)
See also references of EP 2006664A4
TAKAHASHI E.: "Laser Kansho Konetsu Henkanho ni yoru Kokando Kyuko Bunseki", THE JAPAN SOCIETY FOR ANALYTICAL CHEMISTRY DAI 54 NENKAI KOEN YOSHISHU, 2005, pages 186 + ABSTR. NO. H1010, XP003018573
JANE HODGKINSON ET AL.: "Photothermal detection of trace compounds in water, using the deflection of a water meniscus", MEASUREMENT SCIENCE AND TECHNOLOGY, vol. 9, 1998, pages 1316 - 1323
JANE HODGKINSON ET AL.: "Photothermal detection of trace optical absorption in water by use of visible- light-emitting diodes", APPLIED OPTICS, vol. 37, no. 31, 1 November 1998 (1998-11-01)
See also references of EP 2006664A4
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (2-2 Nakanoshima 2-chome,Kita-ku, Osaka-sh, Osaka 05, JP)
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