| Abstract: | Colorimetric Cl- data from natural solutions that contain dissolved organic carbon (DOC) may be biased high. We evaluated aquatic Cl- concentrations in ecosystem compartments at the Bear Brook Watershed, Maine, and from lakes in Maine, using ion chromatography and colorimetry. DOC imparts a positive interference on colorimetric Cl- results proportional to DOC concentrations at approximately 0.8 ??eq Cl-/L per mg DOC/L. The interference is not a function of Cl- concentration. The resulting bias in concentrations of Cl- may be 50% or more of typical environmental values for Cl- in areas remote from atmospheric deposition of marine aerosols. Such biased data in the literature appear to have led to spurious conclusions about recycling of Cl- by forests, the usefulness of Cl- as a conservative tracer in watershed studies, and calculations of elemental budgets, ion balance, charge density of DOC, and dry deposition factors. |
| Genre: | Article |
| ProdID: | 70018184 |
| Citation Author: | Norton, S. A.; Handlet, M. J.; Kahl, J. S.; Peters, N. E. |
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| Citation End Page: | 298 |
| Citation Issue: | 3-4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Water, Air, and Soil Pollution |
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| Citation Number Of Pages: | 16 |
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| Citation Publisher: | Springer |
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| Citation Search Results Text: | Re-evaluation of colorimetric Cl- data from natural waters with DOC; 1996; Article; Journal; Water, Air, and Soil Pollution; Norton, S. A.; Handlet, M. J.; Kahl, J. S.; Peters, N. E. |
| Citation Start Page: | 283 |
| Citation Volume: | 91 |
| Citation Year: | 1996 |
| Type: | citation/reference |
| Text: | Re-evaluation of colorimetric Cl- data from natural waters with DOC; 1996; Article; Journal; Water, Air, and Soil Pollution; Norton, S. A.; Handlet, M. J.; Kahl, J. S.; Peters, N. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1007/BF00666264 |
| Date Other: | Mon, 1 Jan 1996 00:00 -0600 |
| Publisher: | Springer |
