Continuous Polarographic Determination of α-Amino Acids

Mercury-based electrochemical detector for liquid chromatography for the detection of glutathione and other sulfur-containing compounds

“…Further difficulties arise from the inherent thermal instability of the compounds used as explosives, and there are thus limits to the use of vapor phase analytical techniques (e.g. gas chromatography) (1)(2)(3) and/or methods which require high energy transfer to the sample molecules (e.g., electron impact mass spectrometry) (4)(5)(6)(7)(8)(9). Consequently, one of the most widely used methods for the analysis of explosives is thin-layer chromatography (TLC) (10,11).…”

“…Since the early studies of "chromatopolarography" by Kemula and coworkers (1), a variety of electrochemical detectors for liquid chromatography (LC) have been described (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). Their main advantage over the more commonly used LC detectors is their much higher sensitivity to electroactive compounds.…”

Cell for continuous analysis in flowing solutions with the rapidly dropping mercury electrode

“…In the last decades, there have been several polarographic approaches to the problem of continuous analysis in flowing solutions (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). For this purpose, both the conventional dropping mercury electrode (DME) (2-8, 11, 12, 14, 15) and the rapidly dropping mercury electrode (RDME) (9,10,13) have been used.…”

Specific Enzymatic Determination of Some Alpha-Amino Acids by an Automatic Spectrophotometric Reaction Rate Method.

“…The ninhydrin reaction has been successfully applied to the continuous determination of amino acids in ion exchange column effluents (7). Blaedel and Todd (1) developed an indirect method for continuous polarographic analysis of alpha-amino acids.…”