| Abstract: | Ecological and toxicological aspects of boron (B) in the environment are reviewed, with emphasis on natural resources. Subtopics covered include environmental chemistry, background concentrations, effects, and current recommendations for the protection of living resources. Boron is not now considered essential in mammalian nutrition, although low dietary levels protect against fluorosis and bone demineralization. Excessive consumption (i.e., >1,000 mg B/kg diet, >15 mg B/kg body weight daily, >1.0 mg B/L drinking water, or >210 mg B/kg body weight in a single dose) adversely affects growth, survival, or reproduction in sensitive mammals. Boron and its compounds are potent teratogens when applied directly to the mammalian embryo, but there is no evidence of mutagenicity or carcinogenicity. Boron`s unique affinity for cancerous tissues has been exploited in neutron capture radiation therapy of malignant human brain tumors. Current boron criteria recommended for the protection of sensitive species include <0.3 mg B/L in crop irrigation waters, <1.0 mg B/L for aquatic life, <5.0 mg B/L in livestock drinking waters, <30 mg B/kg in waterfowl diets, and <100 mg B/kg in livestock diets. |
| Genre: | Organization Series |
| ProdID: | 5200086 |
| Citation Author: | Eisler, R. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | ii, 32 |
| Citation Projection: | |
| Citation Public Comments: | This series is available in PDF or on free CD. To access, use URL. PDF on file: 3886 CHR_20_boron.pdf |
| Citation Publisher: | U.S. Department of the Interior, Fish and Wildlife Service |
| Citation Series: | Contaminant Hazard Reviews |
| Citation Series Code: | |
| Citation Series Number: | Report 20 ; Biological Report 85(1.20) |
| Citation Search Results Text: | Boron Hazards to Fish, Wildlife, and Invertebrates: A Synoptic Review; 1990; Organization Series; Report 20 ; Biological Report 85(1.20); Eisler, R. |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Boron Hazards to Fish, Wildlife, and Invertebrates: A Synoptic Review; 1990; Organization Series; Report 20 ; Biological Report 85(1.20); Eisler, R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.pwrc.usgs.gov/infobase/eisler/chr_20_boron.pdf |
| Date Other: | Tue, 9 Jun 2009 10:33 -0500 |
| Publisher: | U.S. Department of the Interior, Fish and Wildlife Service |
