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Determination of Color of Water and Wastewater
By Means of AD MI Color Values
WILLIAM ALLEN, Manager
Technical Services
W.B. PRESCOTT, Manager
Scientific Services
American Cyanamid Company
Bound Brook, New Jersey 08805
R.E. DERBY, JR., President
Nyanza, Inc.
Lawrence, Massachusetts 01842
C.E. GARLAND, Research Chemist
the E.L duPont deNemours & Co., Inc.
Penns Grove, New Jersey 08069
J.M. PERET, Color Physics Supervisor
Ciba-Geigy Corporation
Greensboro, North Carolina 27409
MAX SALTZMAN, Manager Color Technology
Allied Chemical Corporation
El Segundo, California 90245
INTRODUCTION
The American Dye Manufacturers Institute (ADMI) is made up of 23 member
companies and includes all of the major dyes manufacturing companies. In 1970, ADMI
established an Ecology Committee to undertake studies of the effect of dyes on the
environment. Such studies were undertaken at several leading universities. As an outgrowth
of these studies the Ecology Committee became aware of the need for a more reliable
method for the measurement of color of water and undertook the work of devising a
method that would meet four criteria.
1. Applicable to any hue.
2. Sensitive to small color differences.
3. Related to APHA values.
4. Require relatively inexpensive instrumentation.
This assignment was well matched to the capabilities of the committee which was made
up of some of the most knowledgeable individuals with respect to color theory and
measurement in the United States dye industry. The ADMI color value which resulted from
this study will be described.
Several methods for obtaining a measurement of the color of water were considered
and rejected because of theoretical or practical limitations. These included Complementary
Tristimulus Colorimetry (1,2,3,4,5,6,7,8,9,10), Sum of Absorbances at Selected Wavelengths (11) and other unpublished methods. It was considered important that the method
devised by related to visual perceptibility rather than to concentration since it is rare that
the identity of the colorants responsible for the color of water are known. It is even less
common that a single colorant is responsible. Furthermore, it was the judgment of the
committee that dyes pose a problem to the environment only in terms of an esthetic effect. A
661
Object Description
| Purdue Identification Number | ETRIWC197358 |
| Title | Determination of color of water and wastewater by means of ADMI color values |
| Author |
Allen, William Prescott, W. B. Derby, R. E. Garland, C. E. Peret, J. M. Saltzman, Max |
| Date of Original | 1973 |
| Conference Title | Proceedings of the 28th Industrial Waste Conference |
| Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/u?/engext,23197 |
| Extent of Original | p. 661-675 |
| Series | Engineering extension series no. 142 |
| Collection Title | Engineering Technical Reports Collection, Purdue University |
| Repository | Purdue University Libraries |
| Rights Statement | Digital object copyright Purdue University. All rights reserved. |
| Language | eng |
| Type (DCMI) | text |
| Format | JP2 |
| Date Digitized | 2009-06-24 |
| Capture Device | Fujitsu fi-5650C |
| Capture Details | ScandAll 21 |
| Resolution | 300 ppi |
| Color Depth | 8 bit |
Description
| Title | page 661 |
| Collection Title | Engineering Technical Reports Collection, Purdue University |
| Repository | Purdue University Libraries |
| Rights Statement | Digital object copyright Purdue University. All rights reserved. |
| Language | eng |
| Type (DCMI) | text |
| Format | JP2 |
| Capture Device | Fujitsu fi-5650C |
| Capture Details | ScandAll 21 |
| Transcript | Determination of Color of Water and Wastewater By Means of AD MI Color Values WILLIAM ALLEN, Manager Technical Services W.B. PRESCOTT, Manager Scientific Services American Cyanamid Company Bound Brook, New Jersey 08805 R.E. DERBY, JR., President Nyanza, Inc. Lawrence, Massachusetts 01842 C.E. GARLAND, Research Chemist the E.L duPont deNemours & Co., Inc. Penns Grove, New Jersey 08069 J.M. PERET, Color Physics Supervisor Ciba-Geigy Corporation Greensboro, North Carolina 27409 MAX SALTZMAN, Manager Color Technology Allied Chemical Corporation El Segundo, California 90245 INTRODUCTION The American Dye Manufacturers Institute (ADMI) is made up of 23 member companies and includes all of the major dyes manufacturing companies. In 1970, ADMI established an Ecology Committee to undertake studies of the effect of dyes on the environment. Such studies were undertaken at several leading universities. As an outgrowth of these studies the Ecology Committee became aware of the need for a more reliable method for the measurement of color of water and undertook the work of devising a method that would meet four criteria. 1. Applicable to any hue. 2. Sensitive to small color differences. 3. Related to APHA values. 4. Require relatively inexpensive instrumentation. This assignment was well matched to the capabilities of the committee which was made up of some of the most knowledgeable individuals with respect to color theory and measurement in the United States dye industry. The ADMI color value which resulted from this study will be described. Several methods for obtaining a measurement of the color of water were considered and rejected because of theoretical or practical limitations. These included Complementary Tristimulus Colorimetry (1,2,3,4,5,6,7,8,9,10), Sum of Absorbances at Selected Wavelengths (11) and other unpublished methods. It was considered important that the method devised by related to visual perceptibility rather than to concentration since it is rare that the identity of the colorants responsible for the color of water are known. It is even less common that a single colorant is responsible. Furthermore, it was the judgment of the committee that dyes pose a problem to the environment only in terms of an esthetic effect. A 661 |
| Resolution | 300 ppi |
| Color Depth | 8 bit |
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