Non-contact, scattering-independent water absorption measurement using a falling stream and integrating sphere

Measurement Science and Technology

Volumn 10, Issue 7, 1999, Pages 612-618

  Fecht, Ingo ^a,b   Johnson, Mark ^b  

^a HAMBURG UNIVERSITY OF TECHNOLOGY   (Germany)

^b North West Water Ltd ^*  (United Kingdom)

Author keywords

Environmental monitoring; Falling stream; Integrating sphere; Non contact measurement; Optical absorption; Optical scattering; Optical transmission; Process monitoring; Water treatment

Indexed keywords

MEASUREMENT METHOD; OPTICAL TECHNIQUE; WATER TREATMENT;

EID: 0032695749     PISSN: 09570233     EISSN: None     Source Type: Journal    
DOI: 10.1088/0957-0233/10/7/307     Document Type: Article

References (8)

1. 1984 Colour and Turbidity of Waters - 1981 Tentative Methods ed R Pittwell HMSO ISBN 0 11 751955 3
2. 1988 The Determination of Colour of Waters and Wastewaters. A Supplement, 1988 ed R Pittwell HMSO ISBN 0 11 752083 7
3. Crowther J and Evans J 1981 Estimating colour in Hazen units by spectrophotometry J. AWWA Res. Technol. 73 265-70
4. Hodgkinson J, Johnson M and Dakin J P 1998 Photothermal detection of trace optical absorption in water by use of visible-light-emitting diodes Appl. Opt. 37 7320-6
5. See, for example, product literature from Steptech Instrument Services Ltd, Stevenage, UK; Seres, Aix-en-Provence, France; and Sigrist Photometer AG, Ennetbürgen, Switzerland.
6. Johnson M and Stäcker D 1998 A non-fouling optical interface for environmental measurements Meas. Sci. Technol. 9 399-408
7. Nelson N B and Prézelin B B 1993 Calibration of an integrating sphere for determining the absorption coefficient of scattering suspensions Appl. Opt. 32 6710-17
8. Pope R M and Fry E S 1997 Absorption spectrum (380-700 nm) of pure water. II. Integrating cavity measurements Appl. Opt. 36 8710-23