Record Display for the EPA National Library Catalog
RECORD NUMBER: 31 OF 69| Main Title | Heavy Metal Ion Interaction and Transport With Synthetic Complexing Agents and Detergent Phosphate Substitutes in Aquatic Systems. | |||||||||||
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| Author | Manaha, Stanley E. ; Smit, Michael J. ; | |||||||||||
| CORP Author | Missouri Water Resources Research Center, Rolla. | |||||||||||
| Year Published | 1972 | |||||||||||
| Report Number | DI-14-01-0001-3525; OWRR-A-049-MO; 02112,; A-049-MO(1) | |||||||||||
| Stock Number | PB-213 252 | |||||||||||
| Additional Subjects | ( Detergents ; Water pollution) ; ( Algae ; Nutrients) ; ( Water pollution ; Copper) ; ( Water analysis ; Copper) ; EDTA ; Chelation ; Trace elements ; Chlorella ; Electrodes ; Buffers(Chemistry) ; Calibration ; Least squares method ; Computer programs ; Potentiometric analysis ; FORTRAN ; Ion selective electrodes ; Chlorella vulgaris ; Oocystis marssonii ; Water pollution effects(Plants) ; Algae growth ; Water pollution detection ; PCTPLT computer program ; FORTRAN 4 programming language | |||||||||||
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| Collation | 198p | |||||||||||
| Abstract | The chemical aspects of the copper micronutrient requirement for algae have been investigated. A reproducible copper requirement for Chlorella vulgaris and Oocystis marssonii was demonstrated. A study of the effects of EDTA on the toxicity of copper to Chlorella showed that copper in chelated form was not toxic to these algae at concentrations up to 46 mg copper. When only sufficient chelating agent was present to keep the iron (III) in solution, however, the toxic effects of copper were evident at 7.00 mg of copper. A second aspect of the project involved the development of a simple, direct multiple standard addition method for the potentiometric analysis of copper in water with a solid-state copper ion-selective electrode. The technique is more sensitive than conventional atomic absorption analysis, though not so rapid. The method is described and a computer program for electrode calibration is given. |