[1]
|
W. Stumm and J. J. Morgan, “Aquatic Chemistry,” 2nd Edition, John Willey and Son, New York, 1991.
|
[2]
|
R. T. Flint and J. B Skinner, “Physical Geology,” 2nd Ed., John Wiley and Sons. New York, 1997, p. 11.
|
[3]
|
H. T. Schacklette, H. I. Sauerand and A. T. Miesch, “Distribution of Trace Elements in the Occurrence of Heart Diseases in Georgia,” Geological Society of America Bulletin, Vol. 83, No. 4, 1972, pp. 1077-1088. http://dx.doi.org/10.1130/0016-7606(1972)83[1077:DOTEIT]2.0.CO;2
|
[4]
|
H. Ojiambo, “Hypertension in Kenya,” Sunday Nation, Vol. 2210, 1996, p.16.
|
[5]
|
J. Wakhisi, N. Patel, N. Buziba and J. Rotich, “Esophageal Cancer in North Rift Valley of Western Kenya,” Makerere University, Kampala, 2006.
|
[6]
|
WHO, “Chromium. International Programme on Chemical Safety,” Environmental Criteria, Geneva, 1988, p. 196.
|
[7]
|
J. M. Borgono, P. Vicent, H. Venturino and A. Infante, “Arsenic in the Drinking Water of the City of Antofagasta: Epidemiological and Clinical Study before and after the Installation of the Treatment Plant,” Environmental Health Perspective, Vol. 19, 1977, pp. 103-105.
|
[8]
|
IPCS, “The Environmental Health criteria 200,” WHO, Geneva, 1998.
|
[9]
|
M. N. I Barclay, A. MacPherson and J. Dixon, “Selenium Content of a Range of Ukfood,” Journal of Food Composition and Analysis, Vol. 8, No. 4, 1995, pp. 307-318. http://dx.doi.org/10.1006/jfca.1995.1025
|
[10]
|
2007. www.atsdr.cdc.gov/
|
[11]
|
D. Wilson, “The Lead Scandal,” Heinemann Educational Books, London, 1983, pp. 17-19.
|
[12]
|
A. Tucker, “The Toxic Metals,” Earth Island Ltd., London, 1972, pp. 15-181.
|
[13]
|
K. B. Pelig-Ba, “Trace Elements in Ground Water from Some Crystalline Rocks in the Upper Regions of Ghana,” Journal of Water, Air and Soil Pollution, Vol. 103, No. 1-4, 1998, pp. 71-89.
|
[14]
|
S. Obiri, “Determination of Heavy Metals in Water Boreholes in Dumasi in the WASSA District of Western Region of the Republic of Ghana,” Journal of Environmental Monitoring and Assessment, Vol. 130, No. 1-3, 2007, pp. 455-463.
|
[15]
|
J. D. Appleton, O. Zhang, K. A. Green, G. Zhang, X. Liu and J. X. li, “Selenium in Soils, Grains, Human Hair and Drinking Water in Relation to Esophageal Cancer in the CIXIAN Area, Hebei Province People’s Republic of China,” Applied Geochemistry, Vol. 21, No. 4, 2006, pp. 684-700.
|
[16]
|
C. O. Ombura, “Towards an Environmental Planning Approach in Urban, Industrial Setting and Operations in Kenya, Faculty of Environmental Sciences,” PhD Thesis, University of Amsterdam, Amsterdam, 1997.
|
[17]
|
E. Upor, Photometric Methods in Inorganic Race Analysis in Wilson and Wilson’s, Comprehensive Analytical Chemistry, Vol. xx, 1985, pp. 30-137.
|
[18]
|
R. J. Reynolds, K. Aldons and K. C. Thompson, “Atomic Absorption Spectroscopy,” Charles Griffin and Co. Ltd., London, 1970, pp. 78-115.
|
[19]
|
Agency for Toxic Substances and Disease Registry (ATSDR), “Frequent Answers and Questions about Selenium,” USA Department of Health and Human Services, Atlanta, 2003.
|
[20]
|
B. K. Kortatsi, “Ground Water Quality in the Wassa West District of the Western Region of Ghana,” CSIR, Water Research Institute, Accra Ghana, 2007.
|
[21]
|
WHO, “Guidelines for Drinking-Water Quality,” 2nd Edition, WHO, Geneva, 1993.
|