Wet effluent parallel plate diffusion denuder coupled capillary ion chromatograph for the determination of atmospheric trace gases.

Wet effluent parallel plate diffusion denuder coupled capillary ion chromatograph for the determination of atmospheric trace gases.
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湿流出物平行板扩散扩散器耦合毛细管离子色谱仪,用于测定大气中的痕量气体。

DOI:
10.1016/s0039-9140(98)00285-9
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发表时间:
1999
期刊:
影响因子:
6.1
通讯作者:
P. Dasgupta
P. Dasgupta
中科院分区:
化学1区
文献类型:
--
作者:
C. Boring;Simon K. Poruthoor;P. Dasgupta

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我们描述了一种廉价,紧凑的平行板扩散珠光耦合毛细管集成电路系统,用于测定可溶离子大气痕量气体。通过在有机玻璃板表面热键合硅胶颗粒,以一种新颖的方式形成了珠光体的主动采样区(0.6×10 cm)。在毛细管离子色谱仪进行分析之前,将平行板扩散剥脂机的流出液收集并在毛细管预浓缩柱上进行预浓缩。使用二氧化硫作为测试气体,收集效率基本上是定量的,在空气采样率高达500毫升min - 1。该系统在10分钟的采样周期内提供1.6万亿分之一的二氧化硫检测限(LOD)。
We describe an inexpensive, compact parallel plate diffusion denuder coupled capillary IC system for the determination of soluble ionogenic atmospheric trace gases. The active sampling area (0.6×10 cm) of the denuder is formed in a novel manner by thermally bonding silica gel particles to the surface of Plexiglas plates. The effluent liquid from the parallel plate diffusion denuder is collected and preconcentrated on a capillary preconcentrator column before analysis using a capillary ion chromatograph. Using SO2as the test gas, collection efficiency is essentially quantitative at air sampling rates up to 500 ml min−1. The system provides a limit of detection (LOD) of 1.6 parts per trillion for SO2for a 10 min sampling period.