References
- 1975 . Deutscher Verein von Gas- und Wasserfachmännern: Arbeitsblatt W 151, Eschborn
- 1970 . Predel'no dopustimye koncentracci vrednych veščesstv v vodoemov sanitarno-bytovogo vodosnabženija, Moscow (USSR)
- Korkisch , J. , Sono , A. and Steffan , I. 1976 . Talanta , 23 : 289
- 1974 . 99 U. S. Environmental Protection Agency Manual: Methods for Chemical Analysis of Water and Wastes, Methods Development and Quality Assurance Research Laboratory, National Environmental Research Center, Cincinnati, Ohio, EPA-625/6-74-003,p.
- Winge , R. K. 1979 . Appl. Spectroscopy , 33 : 206
- Sill , C. W. and Willis , C. P. 1959 . Anal. Chem. , 31 : 598
- Merill , J. R. , Honda , M. and Arnold , J. R. 1960 . Anal. Chem. , 32 : 1420
- Kaiser , G. , Grallath , E. , Tschöpel , P. and Tölg , G. 1972 . Z. Anal. Chem , 259 : 257
- Welz , B. 1975 . Atomic Absorption Spectroscopy , 62 Weinheim/F. R. G : Verlag Chemie . p.
- Laitinen , H. A. and Kivalo , P. 1952 . Anal. Chem. , 24 : 1467
- Eristavi , D. I. , Brouchek , F. I. and Eristavi , V. D. 1966 . Tr. Gruzìnsk. Politekn. Inst. , 3 ( 108 ) : 41 (in Russian)
- Korkisch , J. and Sorio , A. 1976 . Anal. Chim. Acta , 82 : 311
- Burba , P. , Lieser , K. H. , Neitzert , V. and Röber , M. 1978 . Z. Anal. Chem. , 291 : 273
- Burba , P. and Willmer , P. G. 1980 . Vom Wasser , 55 : 227
- Burba , P. , Röber , M. and Lieser , K. H. 1978 . Angew. Makromolekulare Chem. , 66 : 131
- Berndt , H. and Jackwerth , E. 1976 . Atomic-Absorption Newsl. , 15 : 109
- Geladi , P. and Adams , F. 1979 . Anal. Chim. Acta , 105 : 219
- Runnels , J. H. , Merryfield , R. and Fisher , H. B. 1975 . Anal. Chem. , 47 : 1258
- Neidhart , B. and Lippmann , Ch. 1981 . Z. Anal. Chem. , 306 : 259
- Stiefel , Th. , Schulze , K. and Tölg , G. 1976 . Anal. Chim. Acta , 87 : 67
- Lieser , K. H. and Zuber , G. 1977 . Angew. Makromolekulare Chem. , 57 : 183
- Burba , P. and Willmer , P. G. 1982 . Z. Anal. Chem. , 311 : 222
- Wegscheider , W. and Knapp , G. 1981 . Preparation of chemically modified cellulose exchangers and their use for the preconcentration of trace elements CRC Critical Reviews in Analytical Chemistry 79 – 102 .
- Mart , L. 1979 . Z. Anal. Chem. , 296 : 350
- Gladney , E. S. and Goode , W. E. 1977 . Anal. Letters , 10 : 619
- Slavin , W. , Manning , D. C. and Carnick , G. R. 1981 . Atomic Spectroscopy , 2 : 137
- Förstner , U. and Müller , G. 1974 . Schwermetalle in Flüssen und Seen als Ausdruck der Umweltverschmutzung , Berlin-Heidelberg-New York : Springer-Verlag .
- Florence , T. M. 1977 . Water Research , 11 : 681