A new purge and trap headspace technique to analyze low volatile compounds from fluid inclusions of rocks and minerals
A new purge and trap headspace technique to analyze low volatile compounds from fluid inclusions of rocks and minerals
复制标题
一种新的吹扫捕集顶空技术,用于分析岩石和矿物流体包裹体中的低挥发性化合物
DOI:
10.1016/j.chemgeo.2013.09.003
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发表时间:
2013
期刊:
影响因子:
3.9
通讯作者:
H.F. Schöler
中科院分区:
文献类型:
--
作者:
Mulder;S.G. Huber;T. Krause;C. Zetzsch;K. Kotte;S. Dultz;H.F. Schöler
A new method for the analysis of trace gases from fluid inclusions of minerals has been developed. The purge and trap GC–MS system is based on the system described by Nolting et al. (1988) and was optimized for the analyses of halogenated volatile organic compounds (VOCs) having boiling points as low as − 128 °C (carbon tetrafluoride).The sample preconcentration cold trap consists of a U-shaped glass lined steel tube (GLT™), that is immersed into a small liquid nitrogen Dewar vessel for cooling. A rapid desorption step heats up the preconcentration tube in < 30 s from − 196 °C to 200 °C. The process is carried out by using a pressurized air stream to dissipate the liquid nitrogen followed by resistive heating of the trap. The design of the cold trap and the direct transfer of desorbed analytes onto the GC column via a deactivated capillary column retention gap made sample refocusing within the GC oven unnecessary. Furthermore, a special air-tight grinding device was developed in which samples ranging from soft halite (hardness 2, Mohs scale) to hard quartz (hardness 7) are effectively ground to average diameters of 1000 nm or below, thereby releasing gases from fluid inclusions of minerals. The gases are then purged from the grinding chamber with a He carrier gas flow. The detection and quantitative determination of gases, such as SF6and CF4released from fluorites and CH3Cl from halite samples is demonstrated.
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DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
M. Frezzotti;A. Kerkhof
通讯作者:
A. Kerkhof
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Frank Siekmann
通讯作者:
Frank Siekmann
影响因子:
2
作者:
F. Nolting;W. Behnke;C. Zetzsch
通讯作者:
F. Nolting;W. Behnke;C. Zetzsch
DOI:
--
发表时间:
2004
期刊:
Die Naturwissenschaften
影响因子:
--
作者:
R. Kranz
通讯作者:
R. Kranz
影响因子:
3.8
作者:
E. Bahlmann;I. Weinberg;R. Seifert;C. Tubbesing;W. Michaelis
通讯作者:
W. Michaelis