Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Roongroje Ratana-ohpas"'
Publikováno v:
Walailak Journal of Science and Technology, Vol 5, Iss 2 (2011)
In order to determine the amounts of lead in ice by stripping potentiometry, the 400 ml matrix modifying solution was added to an ice sample of total volume 30 ml in an electrochemical cell. The modified solution was 800.00 mg/l Hg(II) in 1.30 M hydr
Externí odkaz:
https://doaj.org/article/31a0462d71b34a1a9a2ce8692065f112
Publikováno v:
Walailak Journal of Science and Technology, Vol 7, Iss 1 (2011)
A stripping chronopotentiometric method was developed for reliable determination of gold in geological samples. Gold in gold ore and steam sediment samples was determined by constant current film stripping chronopotentiometry at a bare glassy carbon
Externí odkaz:
https://doaj.org/article/41d607ae9e24401fb1342184bfaff96e
Publikováno v:
International Journal of Environmental Analytical Chemistry. 92:783-796
A simple method for the determination of trace cadmium (Cd) (II), using a disposable 1-(2-pyridylazo)-2-naphthol [PAN]-Nafion®-coated glassy carbon electrode, has been developed. The modified electrode exhibited a significant improvement on both sen
Publikováno v:
Electroanalysis. 23:1607-1614
A new combination bismuth bulk electrode allowing potentiostatic control to be maintained in a suspended sample drop is described. The electrode was tested by adsorptive constant-current stripping chronopotentiometry for iron-(III) using Solochrome V
Publikováno v:
Analytica Chimica Acta. 346:157-164
The amount of mercury, deposited on a glassy carbon electrode at various potentials during the first 200 ms of electrolysis, has been determined by constant current coulometric stripping potentiometry. Eight microliter samples, containing approximate
Publikováno v:
Analytica Chimica Acta. 333:115-118
The total tin concentration in five different kinds of canned fruit juices has been determined by using constant current stripping analysis on a gold film electrode, and potentiometric stripping analysis on a mercury film electrode, the concentration
Publikováno v:
Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology. 28:2315-2321
An analytical chemistry clean room was established by renovating an ordinary chemistry laboratory; 8.75x8.20x2.9 meters3. The main aim is to develop a contamination free area for trace and ultratrace analysis of metals. The metallic parts in the labo
Publikováno v:
Analytica Chimica Acta. 278:237-242
Tap water samples of 400 μl were added to 200 μl of matrix-modifying solution consisting of hydrochloric acid, calcium chloride, mercury(II), ethanol, Triton X-100 and bismuth(III) as internal standard and contained in disposable 2-ml Eppendorff sa
Publikováno v:
Electroanalysis. 9:570-571
Calibration-free determination of AsIII in the presence of AsV using coulometric stripping potentiometry is described. AsIII, in the concentration range 0.01-2 mg/L, is quantitatively reduced to elemental arsenic and simultaneously dissolved in gold
Publikováno v:
The Analyst. 121:1851
Samples were peristaltically injected, through a 0.32 mm diameter nozzle, on to the surface of a combined working, reference and counter electrode, which was held upside-down, and then allowed to drain down the electrode to waste. Sample analyte ions