Determination of fluid inclusion electrolytes by atomic absorption spectroscopy as of the water leachates of crushed or decrepitated quartz samples from Madan, Bulgaria

• Published in: Mikrochimica acta (1966) Vol. 147; no. 4; pp. 231 - 236
• Main Authors: KOTZEVA, Boryana G, GOCHEVA, Irina D, PIPEROV, Nikolay B, HAVEZOV, Ivan P, DETCHEVA, Albena K
• Format: Journal Article
• Language: English
• Published: Wien Springer 01.07.2004; New York, NY
• Subjects: Analytical chemistry; Chemistry; Exact sciences and technology; Spectrometric and optical methods; Water; water leach method; Quartz; Leaching; FAAS; Contamination; Flame spectrometry; Sample preparation; Dilute solution; ETAAS; Thermoelectric atomization; Leachate; Atomic absorption spectrometry; Fluid inclusions
• ISSN: 0026-3672; 1436-5073
• DOI: 10.1007/s00604-004-0236-0

Two methods of opening fluid inclusions in hydrothermal quartz from Madan (Bulgaria) - mechanical (crushing) and thermal (decrepitation), followed by water leaching of the released components - were applied and compared. Problems concerning the sample preparation procedure, such as choice of an optimal sample mass and grain fraction, contamination of the grain surfaces, as well as the influence of La3+ and Cs+ additions on the water leaches etc., are discussed. The mol ratios X/Na (X = K, Ca, Mg, Mn) were determined by flame or electrothermal vaporization AAS of the dilute solutions obtained. The total salinity of inclusion fluid estimated by classical microcryometry is used to calculate the total concentrations of the main ions (Na+, K+, Ca2+ Mg2+ and Mn2+) in the water phase of the inclusions. Furthermore, the maximum concentrations of Pb2+ and Cu2+ were evaluated.