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Application of Atomic Absorption Spectroscopy for Monitoring Selected Metals in an Industrial Waste ALFRED M. TENNY, Research Chemist GEORGE H. STANLEY, Sanitary Chemist The Metropolitan Sanitary District of Greater Chicago Chicago, Illinois INTRODUCTION Atomic absorption has been shown to be a valuable analytical aid in many fields. Numerous articles have been published describing methodologies for over 70 elements in various matrices and in the presence ofdifferent interferences. New applications and techniques are continuing to be found. Within the Metropolitan Sanitary District of Greater Chicago, atomic absorption is used for a variety of samples. These vary from trace determinations in water samples to metallic constituents in lubricating oils. In the monitoring of industrial waste water samples the usefulness of atomic absorptions has exceeded our most optimistic expectations. Iron, manganese, zinc, cadmium, copper, nickel, chromium and lead were measured routinely and rapidly on all industrial waste water samples during a period of over two years. In addition, calcium, magnesium, sodium, potassium, lithium, tin, cobalt, silver and molybdenum have been measured in various special samples with little difficulty. Atomic absorption is especially well suited to industrial waste analyses for several reasons. These include simple sample preparation, relative absence of interferences, ease of operation, optimum sensitivity for most metals of interest and low cost per analysis. When one considers alternative methods of measuring trace metals, as given in Standard Methods (1), atomic absorption looks even better. This is especially true if one is required to analyze a large number of samples. The District has analyzed as many as 400 samples per instrument per day. Instrument time has never been a limiting factor in the industrial waste monitoring program. Prior to the application ofatomic absorption, the analyses of "heavy metals" were a constant laboratory bottleneck. Both the number of samples and the number of parameters per sample were extremely limited by available manpower and space. We shall attempt to show how atomic absorption is applied in waste water monitoring and how intensive data evaluation can expedite a pollution control program. EXPERIMENTAL PROCEDURE The most important step in any analysis is sample collection. This is especially true in pollution control where laboratory results must be available for legal action. The present group of Industrail Waste Ordinances (1946, 1962) limit, among other parameters, the discharge of toxic materials by industry to sewers, streams and drainage areas. Analytical results must be based on composite sewer samples which are taken "over a 24-hr or longer period from the flow from all plant outlets discharging into a single public sewer" (2). Stream drainage area - 455 -
Object Description
Purdue Identification Number | ETRIWC196741 |
Title | Application of atomic absorption spectroscopy for monitoring selected metals in an industrial waste |
Author |
Tenny, Alfred M. Stanley, George H. |
Date of Original | 1967 |
Conference Title | Proceedings of the 22nd Industrial Waste Conference |
Conference Front Matter (copy and paste) | http://earchives.lib.purdue.edu/u?/engext,14179 |
Extent of Original | p. 455-467 |
Series |
Engineering extension series no. 129 Engineering bulletin v. 52, no. 3 |
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 | 2009-05-20 |
Capture Device | Fujitsu fi-5650C |
Capture Details | ScandAll 21 |
Resolution | 300 ppi |
Color Depth | 8 bit |
Description
Title | page 455 |
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 | Application of Atomic Absorption Spectroscopy for Monitoring Selected Metals in an Industrial Waste ALFRED M. TENNY, Research Chemist GEORGE H. STANLEY, Sanitary Chemist The Metropolitan Sanitary District of Greater Chicago Chicago, Illinois INTRODUCTION Atomic absorption has been shown to be a valuable analytical aid in many fields. Numerous articles have been published describing methodologies for over 70 elements in various matrices and in the presence ofdifferent interferences. New applications and techniques are continuing to be found. Within the Metropolitan Sanitary District of Greater Chicago, atomic absorption is used for a variety of samples. These vary from trace determinations in water samples to metallic constituents in lubricating oils. In the monitoring of industrial waste water samples the usefulness of atomic absorptions has exceeded our most optimistic expectations. Iron, manganese, zinc, cadmium, copper, nickel, chromium and lead were measured routinely and rapidly on all industrial waste water samples during a period of over two years. In addition, calcium, magnesium, sodium, potassium, lithium, tin, cobalt, silver and molybdenum have been measured in various special samples with little difficulty. Atomic absorption is especially well suited to industrial waste analyses for several reasons. These include simple sample preparation, relative absence of interferences, ease of operation, optimum sensitivity for most metals of interest and low cost per analysis. When one considers alternative methods of measuring trace metals, as given in Standard Methods (1), atomic absorption looks even better. This is especially true if one is required to analyze a large number of samples. The District has analyzed as many as 400 samples per instrument per day. Instrument time has never been a limiting factor in the industrial waste monitoring program. Prior to the application ofatomic absorption, the analyses of "heavy metals" were a constant laboratory bottleneck. Both the number of samples and the number of parameters per sample were extremely limited by available manpower and space. We shall attempt to show how atomic absorption is applied in waste water monitoring and how intensive data evaluation can expedite a pollution control program. EXPERIMENTAL PROCEDURE The most important step in any analysis is sample collection. This is especially true in pollution control where laboratory results must be available for legal action. The present group of Industrail Waste Ordinances (1946, 1962) limit, among other parameters, the discharge of toxic materials by industry to sewers, streams and drainage areas. Analytical results must be based on composite sewer samples which are taken "over a 24-hr or longer period from the flow from all plant outlets discharging into a single public sewer" (2). Stream drainage area - 455 - |
Resolution | 300 ppi |
Color Depth | 8 bit |
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