This paper deals with the difference in residence time of the two reagent/sample interface peaks produced in a single channel manifold. This difference in residence time is explained on the basis of a dispersion model, and the relevant factors were studied. It was found that in both sample injection
Experience with flow-injection analysis in marine chemical research
β Scribed by Lilija K. Shpigun; Irina Ya. Kolotyrkina; Yurij A. Zolotov
- Book ID
- 102983676
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 631 KB
- Volume
- 261
- Category
- Article
- ISSN
- 0003-2670
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β¦ Synopsis
Some results on usmg flow-mjectlon analysis @IA) m marme chemical mvestlgatlons are reported The new modlflcatlons of reversed flow-mJectlon manifolds for the determmatlon of dissolved slhcate, phosphate, sulphate, sulphlde and manganese(II) m sea-water samples and normal flow-mJectlon methods for the determmatlon of total alkalmlty, sulphate and mam nutrient-type constituents m interstitial water samples are described The use of the proposed procedures for obtammg the concentration profiles of some important species m sea water and m mterstitlal water of marine sediments IS shown The advantages of FIA techmques for determmmg the chemical data m a chemical laboratory aboard a vessel are demonstrated
π SIMILAR VOLUMES
A method IS described for the determmatlon of chemxal oxygen demand (COD) m aqueous envIronmenta samples by segmented flow-mjectlon analysis KMnO, solution IS used as both an oxidant and a spectrophotometrlc reagent and o-glucose as a standard When the reaction temperature IS 95"C, the residence tim
A mathematical model of flow-injection analysis @IA) is developed for a pseudo-first-order chemical reaction in a straight reaction tube. Analytical expressions are derived for the first three moments of the peaks of the sample and product of the chemical reaction. A comparison with the available nu
Flow injection analysis (FIA) with amperometric detection is applied to the determination of cocaine. Flow parameters were optimised prior to electrode calibration: a detection potential of +l V vs. Ag/AgCYsat. KC1 and a flow rate of 2.5 ml min-' resulted adequate. A relative standard deviation of 1