Sequential metal vapor elution analysis for the determination of Cu and Mn in biological materials and waters

Metal and Molecular Vapor Separation Analysis for Direct Determination of Mn and Cu by Atomic Absorption Detection, Free of Background Absorption

“…Recently, a metal and molecular vapor separation analysis (MMVSA) has been developed for a separation method of trace elements. It was found from these studies [11][12][13] that the advantages of MMVSA were (a) a direct separation of the metal vapors, (b) simple analysis without prior chemical treatment, such as liquid-liquid extraction and coprecipitation, (c) the elimination of chemical and spectral interferences occurring in conventional AAS and inductively coupled plasma-optical emission spectrometry (ICP-OES), (d) no necessity for matrix modifiers and (e) the possibility to use a powerful accessory of analytical instruments (mass spectrometer, etc.). However, despite these advantages, little information on the direct slurry sampling of MMVSA has been presented.…”

“…It has been reported that some elements were separated by similar MMVSA with an open column. In a previous study with the open molybdenum column [11], it was reported by Ohta et al that the suitable vaporization and separating temperatures were 2220 K and 2170 K for manganese and copper separation in Ar carrier gas, respectively. Since the metal chloride standard solutions were used in the study by Ohta et al [11], manganese and copper chlorides may be formed in the pyrolyzing step.…”

“…In a previous study with the open molybdenum column [11], it was reported by Ohta et al that the suitable vaporization and separating temperatures were 2220 K and 2170 K for manganese and copper separation in Ar carrier gas, respectively. Since the metal chloride standard solutions were used in the study by Ohta et al [11], manganese and copper chlorides may be formed in the pyrolyzing step. In the study, the order of the appearance of the metals was Cd, Zn, Pb, Cu, Na, and Mn, and this was reasonable considering the boiling points of these metals or chlorides.…”

“…The apparatus for the metal and molecular vapor separation analysis (MMVSA) with atomic absorption detection are shown in Table 1. The MMVSA system was composed of a Pyrex glass dome containing a molybdenum column, and the illustration for the system was already reported in the previous work [11,12]. Argon and hydrogen purge gases were purged through the dome to prevent the oxidation of the column.…”

Electrothermal Atomic Absorption Spectrometry and Related Techniques

“…For most elements, sensitivity was poorer in the boron nitride furnaces. Ohta et al(41) applied their instrumentation for sequential metal vapor elution analysis (see refs 58-60 in the previous review in this series (1)) for the analysis of solid biological samples for the determination of Cd and Zn.Atomic Absorption Spectrometers, Operation and Optimization. For continuum source multielement ETAAS,Wichems et al (…”