Roels Joris, Van Langenhove Herman, Verstraete Willy
Laboratory of Microbial Ecology and Technology, Faculty of Applied and Biological Sciences, Ghent University, Belgium.
J Chromatogr A. 2002 Apr 5;952(1-2):229-37. doi: 10.1016/s0021-9673(02)00084-5.
A gas chromatographic (GC) system to measure free phosphine in biogas and matrix bound phosphine in manure and sludge is presented. The system consists of a sample preconcentration trap filled with glass beads, connected with a capillary GC equipped with a thermionic specific detector. With a trap temperature as low as -155 degrees C, a sampling flow of 20 ml/min and a typical total sample volume of 100 ml, free phosphine concentrations in the low ng/m3 range and matrix bound phosphine in the low ng/kg dry matter range, can be accurately and reproducibly determined.
本文介绍了一种用于测量沼气中游离磷化氢以及粪便和污泥中基质结合磷化氢的气相色谱（GC）系统。该系统由一个装有玻璃珠的样品预浓缩捕集阱组成，与配备热离子特异性检测器的毛细管气相色谱仪相连。在捕集阱温度低至-155℃、采样流量为20 ml/min且典型总样品体积为100 ml的条件下，能够准确且可重复地测定低ng/m³范围内的游离磷化氢浓度以及低ng/kg干物质范围内的基质结合磷化氢浓度。
