Summary
An experiment in which perennial ryegrass (Lolium perenne L.) was grown in solution cultures containing various forms of radiosilver (110mAg) is ptake of labelled Ag from solutions containing either AgNO3, Ag2SO4, AgCH3COO, Ag-humic acid (HA) or Ag-fulvic acid (FA) complexes is compared. In each case concentrations of Ag in the plant roots was several fold higher than in the plant shoots. However the Ag concentration in roots from the Ag-HA preparations was only about 5% of that from the AgNO3 solutions; from Ag-FA it was 18%. Transport index values were highest for plants grown in the Ag-HA solution, indicating greater mobility of Ag within these plants. Preliminary data for a selective extraction procedure performed on Ag-HA preparations suggest sorption onto various active sites. The relevance of these findings to the cycling of Ag within soils is discussed.
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References
Baker W E 1978 The role of humic acid in the transport of gold. Geochim. Cosmochim. Acta 42, 645–649.
Bolton J 1977 Changes in soil pH and exchangeable calcium in two liming experiments on contrasting soils over 12 years. J. Agric. Sci. Cambridge 89, 81–86.
Boyle R W 1968 The geochemistry of silver and its deposits, with notes on geochemical prospecting for the element. Geological Survey of Canada: Bulletin 160. Department of Energy, Mines and Resources, Canada.
Cameron R D 1973 Modelling Silver Transport in the Soil. Unpublished Ph.D Thesis, Colorado State University.
Chen T, Senesi N and Schnitzer M 1978 Chemical and physical characteristics of humic and fulvic acids extracted, from soils of the Mediterranean region. Geoderma 20, 87–104.
Curtin G C, Lakin H W, Hubert A E, Mosier E L and Watts K C 1971 Utlization of mull (forest humus layer) in geochemical exploration in the Empire District, Clear Creek County, Colorado. Geological Survey Bulletin 1278-B, Washington.
Curtin G C, Lakin H W, Newerburg G J and Hubert A E 1968 Utilization of humus-rich forest soil (mull) in geochemical exploration for gold. Geological Survey Circular 562, Washington.
Goldschmidt V M 1937 The principles of distribution of chemical elements in minerals and rocks. Chem. Soc. (London) J 655–673.
Goldschmidt V M 1954 Geochemistry. Blackwells Oxford.
Grégoire D C 1985 Selective extraction of organically bound gold in soils, lake sediments and stream sediments. J. Geochem. Explor. 23, 299–313.
Hayase K and Tsubota H 1985 Sedimentary humic acid and fulvic acid as fluorescent organic materials. Geochim. Cosmochim. Acta 49, 159–163.
Jones K C 1984 Environmental Aspects of silver in Wales. Unpublished Ph.D. Thesis, University of London.
Jones K C, Peterson P J and Davies B E 1984a Extraction of silver from soils and its determination by atomic absorption spectrometry. Geoderma 33, 157–168.
Jones K C, Peterson P J and Davies B E 1984b The discharge of silver and other heavy metals from an acid mine drainage stream in mid-Wales, U.K.In: Trace Substances in Environmental Health, XVIII, Colombia, Missouri, Ed. D D Hemphill, 292–302.
Jones K C, Davies B E and Peterson P J 1986 Silver in Welsh soils. Physical, and chemical distribution studies. Geoderma.
Kerndorff H and Schnitzer M 1980 Sorption of metals on humic acid. Geochim. Cosmochim. Acta 44, 1701–1708.
Khan S, Nandan D and Nazar Khan N 1982 The mobility of some heavy metals through Indian Red soil. Environmental Pollution (Series B) 4, 119–125.
Malyuga D P 1964 Biogeochemical methods of prospecting. Consultants Bureau, New York.
Manskaya S M and Drozdova T V 1968 Geochemistry of Organic Substances. Pergamon, Oxford.
Murray K and Linder P W 1984 Fulvic acids: structure and metal binding. II Predominant metal binding sites. J. Soil Sci. 35, 217–222.
Petterson O 1976 Heavy metal ion uptake by plants from nutrient solutions with metal ion, plant species and growth period variations. Plant and Soil 45, 445–449.
Presant E W and Tupper W M 1965 Trace elements in some New Brunswick soils. Can. J. Soil Sci. 45, 305–310.
Raspor B, Nurnberg H W, Valenta P and Branica M 1984 Studies in seawater and lake water on interactions of trace metals with humic substances isolated from marine and estuarine sediments. Marine Chemistry 15, 217–230.
Romney E M, Wallace A, Wood R, El-Gazzar A M, Childress J D and Alexander G C 1977 Role of soil organic matter in a desert soil on plant response to silver, tungsten, cobalt and lead. Commun. Soil Sci. Plant Anal. 8, 719–725.
Skogerboe R K and Wilson S A 1981 Reduction of ionic species by fulvic acid. Anal. Chem. 53, 228–232.
Soon Y K and Bates H E 1982 Chemical pools of cadmium, nickel and zinc in polluted soils and some preliminary indications of their availability to plants. J. Soil Sci. 33, 477–488.
Thompson N R 1973 SilverIn Comprehensive Inorganic Chemistry. Eds. J C Bailar, H J Emeleus R Nyholm and H F Trotman-Dickenson. Pergamon Press, Oxford.
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Jones, K.C., Peterson, P.J. The influence of humic and fulvic acids on silver uptake by perennial ryegrass, and its relevance to the cycling of silver in soils. Plant Soil 95, 3–8 (1986). https://doi.org/10.1007/BF02378846
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DOI: https://doi.org/10.1007/BF02378846