the Physics Department, Armour Research Foundation, gave ex- ceedingly valuable aid in ..... dissolved, place the beaker on a hot plate at low heat un...
heteropoly acid with a pentanol- diethyl ethersolution, the molybdo- silicic acid is stripped with a basic buffer solution. The absorbance of the aqueous molybdate ...
Standardize this solution gravimetri- cally. .... 0.03 to 0.3 p.p.m. at 210 µ based on .... kh2po4. 0 so4-=. (NH4)2S04. 500 vos- nh4vo. 250 wo4-=. Na2W04. 100.
Ali Bazzi , D.F. Boltz. Microchemical Journal 1975 20 (4), 462-467. Determination of traces of lithium, beryllium or phosphorus by x-ray analysis. C.L. Luke.
Indirect Ultraviolet Spectrophotometric Determination of Silicon. ... Spectrophotometric determination of silicate with Rhodamine B by flow-injection analysis.
appeared that the analytical method of choice would be the photometric molybdenum blue method (S). This method fails in the presence of appreci-.
Co. at its Newport, Del., plant. The presence of boron in concentrations as low as 0.5 p.p.b. influenced the prop- erties of semiconductor grade silicon. Research.
Cation Exchange Separation of Uranium from Bismuth in Hydrochloric Acid-Isopropanol Medium. Johann. Korkisch and S. S. Ahluwalia. Analytical Chemistry ...
Mar 1, 1987 - Spectrophotometric determination of traces of silicon in water after collection as silicomolybdenum blue on an organic-solvent-soluble ...
ANALYTICAL
472
Table VII. Reference
Na
K
This study
410
3000
C3)
690 650
3340 3700
m
Precision and Accuracy. Because the problem essentially different for almost every element encountered, it was difficult to establish a general Hg. level of precision or accuracy. For an element
