Flame spectrophotometeric determination of rubidium in sea water
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چکیده
منابع مشابه
Determination of Rubidium in Seawater
Rubidium concentrations in seawater from various locations and depths to 3,900 m have been determined using two independent techniques--direct flame photometry and mass spectrometry. Results of these two techniques agree within estimated errors and indicate that the rubidium content in the oceans is uniform within H$% with values varying about 120 pg/liter. Sediment from the sea floor below a d...
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Two simple, economical, precise and reproducible visible spectrophotmetric methods have been developed for the estimation of doxycycline in tablet formulation. The developed methods are based on the formation of chloroform extractable complex of doxycycline with bromo phenol blue and safranine in double distilled water. The complex with bromo phenol blue (method I) shows absorbance maxima at 41...
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Pb and Cd in water samples were determined by cloud point extraction (CPE) with sodiumdiethyldithiocarbamate (DDTC) as the chelating agent and octylphenoxypolyethanl (Triton X-114) asthe surfactant prior to flame atomic absorption spectrometry (FAAS) determination. The main factorsof affecting the extraction and detection processes were optimized. The preconcentration of 10 mL ofstandard soluti...
متن کاملAnalytical method of determination of ruthenium-106 in sea water.
寺 田喜久雄,西 村 かず よ,木 羽敏泰:金 沢大学理学部化学教室,金 沢市丸 の内1-1〒920 A simple and effective method for determining 106Ru in sea water is presented. After the sea water is heated with oxidants (potassium peroxodisulfate and potassium periodate) in potassium hy droxide solution, ruthenium tetraoxide is extracted into carbon tetrachloride from the aqueous solution adjusted to pH 4-6, and then back-extracted with a ...
متن کاملdetermination of maximal singularity free zones in the workspace of parallel manipulator
due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1967
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.16.781