G52 



DATA OF GEOCHEMISTRY 



Table 93. — Proximate composition of dissolved organic matter 

 from Wisconsin lake waters containing varying amounts of total 

 organic carbon 



[Data of Birge and Juday (1934)] 



identified. An early report by Peterson, Fred, and 

 Domogalla (1925) of the presence of free amino acids in 

 lake waters has never been confirmed, although at- 

 tempts have been made to do so. 



The particulate matter of lakes and rivers may be 

 expected to contain all the organic chemicals that are 

 contained in the plants and animals that form a large 

 part of the undissolved organic content of water. 

 Vallentyne lists several dozen molecular species that 

 have actually been identified in the suspended matter 

 or its hydrolyzate. An even larger number of com- 

 pounds have been identified in sediments. 



A very important advance has been made by Shapiro 

 (1957, 1958) who has found up to 5 mg per liter of 

 yellow organic acid in lake water. This material 

 consists of monocarboxylic hydroxy aliphatic organic 

 acids of molecular weight approximately 450. The 

 acids are apparently unsaturated and nonnitrogenous, 

 and they are capable of keeping iron in a nonprecipi- 

 tatable state at high pH. Lakes of widely different 

 types appear to have a reasonably uniform complement 

 of organic salts or complexes of these acids and the 

 common inorganic ions. Extreme pH values or con- 

 centrations of a single ion may modify the exact pat- 

 tern. Although neither the acids nor their salts have 

 been completely purified as yet, it appears that a very 

 large part of the dissolved organic matter in lake 

 waters may be in the form of a very small number of 

 closely related compounds. These compounds are 

 important as foods to at least some aquatic organisms. 

 They are known to interact with calcium, magnesium, 

 sodium, potassium, and iron and appear to be involved 

 with cobalt, manganese, copper, and zinc as well. 



Goryunova (1954) has found a large amount of poly- 

 saccharide in the water of Lake Beloye, only a very 

 small amount of which is starch. 



BIBLIOGRAPHY 



Adlercreutz, E., 1928, Uber das Vorkommen von Jod in ver- 

 schiedenartigen Wassern in Finnland: Acta Medica Scan- 

 dinavica, v. 69, p. 325-391. 



Aladjem, Raphael, 1926, Seasonal variation in salinity of Nile 

 water in the Aswan Reservoir and at Rodah (Giza) : Min- 

 istry of Agriculture, Egypt. Tech. and Sci. Service Bull. 

 81, 14p. 



Alekin, O. A., 1953, Osnovy gidrokhimii (principles of hydro- 

 chemistry) : Leningrad, Gidrometeorologicheskoe izd-vo., 

 296 p. 



Alekin, O. A., and Brazhnikova, L. V., 1957, New data on the 

 average composition of river water for the territory of the 

 USSR: Akad. Nauk SSSR Doklady, v. 114, p. 1062-1065 

 (in Russian). 



Alekin, O. A., and Moricheva, N. P., 1956, The saturation of 

 Volga water with calcium carbonate: Akad. Nauk SSSR 

 Doklady, v. 109, p. 803-806 (in Russian). 



Almestrand, Artur, and Lundh, Asta, 1951, The vegetation and 

 hydrochemistry of Scanian lakes. II. Ion determination 

 in lake waters: Botaniska Notiser, Supp., v. 213, p. 145-174. 



Anderson, E. C., and Libby, W. F., 1951, World-wide distribu- 

 tion of natural radiocarbon: Phys. Rev., v. 81, p. 64. 



Anderson, G. C., 1958, Some limnological features of a shallow 

 saline meromictic lake: Limnology and Oceanography, v. 3, 

 p. 259-270. 



Anderson, V. G., 1941, The origin of the dissolved inorganic 

 solids in natural waters with special reference to the O'Shan- 

 nassy River catchment, Victoria: Australian Chem. Inst. 

 Jour., v. 8, p. 130-150. 



1945, Some effects of atmosphere evaporation and trans- 

 piration on the composition of natural waters in Australia: 

 Australian Chem. Inst. Jour, and Proc, v. 12, p. 41-68, 

 83-98. 



Atkins, W. R. G., 1933, The rapid estimation of the copper 

 content of sea water: Marine Biol. Assoc. United Kingdom 

 Jour., v. 19, p. 63-66. 



Auden, J. B., Gupta, B C., Roy, P. C, and Hussain, Mehdi, 

 1942, Report on sodium salts in red soils in the United 

 Provinces, with notes on occurrences in other parts of India: 

 India Geol. Survey Rees. v. 77, p. 1-45. 



Azadian, A., 1930, Les eaux d'Egypte: Impremerie Nationale, 

 Cairo. Notes et Rapports des Laboratoires de l'Hygiene 

 Publique, no. 7, 3 v. 523 p. 



Bado, A., and Trelles, R. A., 1937, Iodine in the waters of Argen- 

 tina Republic: Internat. Assoc. Limnology Proc, v. 7, p. 

 592-595. 



Baker, B. H., 1958, Geology of the Magadi area: Kenya Geol. 

 Survey Rept. no. 42, 81 p. 



Beadle, L. C, 1932, Scientific results of the Cambridge expedi- 

 tion to the East African Lakes, 1930-31. 4. The waters of 

 some East African lakes in relation to their fauna and flora: 

 Linnean Soc. (Zool.) Jour., v. 38, p. 157-211. 



Beamer, N. H., 1953, Chemical character of surface water in 

 Pennsylvania, 1949 to 1951 : Pennsylvania Dept. Commerce, 

 State Plan. Board and Pennsylvania Dept. of Forests and 

 Waters Pub. 26, 96 p. 



Beauchamp, R. S. A., 1939, Hydrology of Lake Tanganyika: 

 Internat. Rev. der gesamten Hydrobiol. und Hydrog., v. 

 39, p. 316-353. 



-1953, Sulphates in African inland waters: Nature, v. 171, 



p. 769. 

 -1954, East African Fisheries Research Oragnization, Ann. 



Rept. 1953, 44 p. 

 Behne, W., 1953, Untersuchungen zur Geochemie des Chlor und 



Brom: Geochim. et Cosmochim. Acta, v. 3, p. 186-21 4. 

 Benoit, R. J., 1956, Studies on the biogeochemistry of cobalt and 



related elements: Unpublished thesis, Yale University. 

 Bentor, Y. K., 1961, Some geochemical aspects of the Dead Sea 



and the question of its age: Geochim. et Cosmochim. Acta, 



v. 25, p. 239-260. 



