| Abstract: | ARCHEM, a computer program written in FORTRAN 77, is designed primarily for use in the routine geochemical interpretation of low-ionic-strength, acidic waters. On the basis of chemical analyses of the water, and either laboratory or field determinations of pH, temperature, and dissolved oxygen, the program calculates the equilibrium distribution of major inorganic aqueous species and of inorganic aluminum complexes. The concentration of the organic anion is estimated from the dissolved organic concentration. Ionic ferrous iron is calculated from the dissolved oxygen concentration. Ionic balances and comparisons of computed with measured specific conductances are performed as checks on the analytical accuracy of chemical analyses. ARCHEM may be tailored easily to fit different sampling protocols, and may be run on multiple sample analyses. (Author ‘s abstract) |
| Genre: | USGS Numbered Series |
| ProdID: | 27913 |
| Citation Author: | Johnsson, P. A.; Lord, D. G. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 42 p. ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 87-4095-A |
| Citation Search Results Text: | A computer program for geochemical analysis of acid-rain and other low-ionic-strength, acidic waters; 1987; WRI; 87-4095-A; Johnsson, P. A.; Lord, D. G. |
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| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | A computer program for geochemical analysis of acid-rain and other low-ionic-strength, acidic waters; 1987; WRI; 87-4095-A; Johnsson, P. A.; Lord, D. G. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1987/4095a/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1987/4095a/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
