..., biquinoline, dithizone, and chromograph tests for Cu and the citrate soluble and acid-soluble tests for total heavy metal, are almost as sensitive but are less precise and less accurate than standard quantitative trace analysis. Statistical techniques based chiefly upon the coefficient of variation show...

... of the biquinoline reagent and copper complex under field conditions, and the fact that biquinoline is specific for copper.Since 1955 the method has been tried on several hundred samples of soil and sediment from various localities in the United States with generally excellent results; the only serious interference...

...Alan Stanley Abstract A simplified biquinoline method was used to determine the readily extractable copper content in a suite of drill-core samples from an area of known economic mineralization [Granduc, British Columbia]. The method gave reproducible results and the data indicate that copper...

... (Slovak Technical University) for measuring and simulating the EPR spectra. REFERENCES Akyuz S. , Akyuz T. & Davies J.E. ( 2000 ) FT-IR and FT-Raman spectroscopic investigation of adsorption of 2,2′-biquinoline by smectite group clay minerals from Anatolia . Vibrational...