References
- Guven , H. , Gungor , N. , Aledman , A. and Ozben , C.S. 1996 . Determination of trace elements in Na-bentonitic clay by INAA in Turkey . J. Radioanal. Nucl. Chem. Letters. , 214 : 269 – 276 .
- Budak , G. , Karabulut , A. , Dogan , O. and Levent , M. 1999 . X-ray fluorescence analysis of trace elements in Mazi mountain ore . J. Trace. Microprobe. Techn. , 17 ( 3 ) : 309 – 314 .
- Borkhodoev , V.Y. 1998 . X-ray fluorescence determination of rubidium, strontium, yttrium, zirconium, and niobium in rocks . J. Trace. Microprobe. Techn. , 16 ( 3 ) : 341 – 352 .
- Buemi , A. , Pompilio , M. and Turchio , F. 1993 . The effect of grinding during sample preparation on the XRF analysis of a basaltic rock . Annali di Chimica. , 83 : 285 – 301 .
- World Health Organization . 1996 . Guidelines for Drinking Water Quality 132 – 382 . Geneva : World Health Organization .
- Joint FAO/WHO Expert Committee on Food Additives . 1982 . WHO Food Additives Series, No. 17 265 – 296 . Cambridge : Cambridge University Press .