A simple flow-injection method for the automatic photometric determination of low concentrations of dissolved oxygen in waters was developed. The method uses Methylene Blue immobilized on a cationic exchange resin packed into a flow-cell located in the spectrophotometer, where the leuco form of the
Determination of trace amounts of copper using a flow-through spectrophotometric sensor
✍ Scribed by J. M. Colsa Herrera; F. Sanchez Rojas; C. Bosch Ojeda; A. García de Torres; J. M. Cano Pavón
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 72 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0895-7533
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Copper can be determined spectrophotometrically at 600 nm based on the reaction of copper(H) and bis(cyclohexanone)oxalyldihydrazone using flow-injection analysis. The carrier stream was distilled water and the reagent streams were 27% (w/v) citric acid solution, 37% (v/v> ammonia solution and 0.18%
A new catalytic kinetic method based on the decolorization reaction of rhodamine B has been established for the determination of copper in serum. In the presence of copper, rhodamine B can be oxidized by hydrogen peroxide in the NH 3 -NH 4 F medium. After each serum sample was digested with strong a
A flow injection on-line coprecipitation preconcentration system with diethyldithiocarbamate (DDTC) chelate of copper used as the coprecipitate carrier was coupled with flame atomic absorption spectrometry (FAAS) for the determination of trace silver. Silver was on-line coprecipitated with DDTC-Cu(I
A sensltlve and simple spectrophotometrx method for the determmatlon of traces of Iron usmg a poldvmyl chloride) (PVC) membrane contaming 4,7-dlphenyl-l,lO-phenanthrolme (bathophenanthrohne) and o-mtrophenyl octyl ether (o-NPOE) was developed To a 5-ml water sample contammg non, 0 5 ml of 6 5 x lo-\