References
- Chao, L. L., 1972: Selective dissolution of manganese oxides from soils and sediments with acidified hydroxylamine hydrochloride. — Soil Sci. Soc. Am. Proc. 36: 764–768.
- Chester, R. & Huges, M. J., 1967: A chemical technique for the separation of ferromanganese minerals, carbonate minerals and adsorbed trace elements from pelagic sediments. — Chem. Geol. 2: 249–262.
- Gibbs, R. J., 1973: Mechanisms of trace metal transport in rivers. — Science 180: 71–73.
- Gupta, S. K. & Chen, K. Y., 1975: Partitioning of trace metals in selective chemical fractions of near-shore sediments. — Environ. Lett. 10: 129–158.
- Förstner, U. & Wittmann, G. T. W., 1983: Metal Pollution in the Aquatic Environment. 2nd Edition, Springer Verlag. Berlin, Heidelberg, New York, Tokyo.
- Håkanson, L., 1984 a: Metals in fish and sediments from the River Kolbacksan water system, Sweden. — Arch. Hydrobiol. 101: 373–400.
- Håkanson, L., 1984 b: Aquatic contamination and ecological risk. An attempt to a conceptual framework. — Water Res. 18: 1107–1118.
- Hatch, W. R. & Ott, W. L., 1968: Determination of sub-microgram quantities of mercury by atomic absorption spectroscopy. — Analyt. Chem. 40: 2085–2087.
- Krishnamurty, K. V., Shpirt, E. & Reddy, M. M., 1976: Trace metal extraction of soils and sediment by nitric acid hydrogen peroxide. — Atom. Absorp. Newsktt. 15: 68–70.
- Tessier, A., Campbell, P. G. C. & Bisson, M., 1979: Sequential extraction procedure for the speciation of particulate trace metals. — Analyt. Chem. 51: 844–851.