CHMB16H3 Final: advantages_diadvantages
Document Summary
Great for industry quality control: disadvantages. Limited use in real samples with many interfering species present. Modern instrumentation can give more accurate results (cost more) Maybe better state of the art approaches. Measures activities of ions rather than concentration. No perturbation from the current passing through the voltmeter. Does not rely on secondary reactions to approximate equivalence point. Linear over a wide range of a (4-6 orders of magnitude) Unaffected by solution color or turbidity: disadvantages. Electrodes can be fouled by proteins, organic compounds. Relative error is doubled for divalent ions and tripled for trivalent. Can record full spectrum instantly faster data. Full spectra can be 160 times a second = great sensitivity: disadvantages. More difficult to incorporate a reference cell. Scanning uv vis detectors: advantage: ,000 (cheap, disadvantage: takes 1 min to scan all the wavelengths, advantages. All frequencies are scanned at once time is not wasted. Multiple scans acquired over a short period of time.
