| 摘要 |
PCT No. PCT/SE84/00156 Sec. 371 Date Dec. 18, 1984 Sec. 102(e) Date Dec. 18, 1984 PCT Filed Apr. 26, 1984 PCT Pub. No. WO84/04392 PCT Pub. Date Nov. 8, 1984.The present invention relates to a gas flow cell for spectrophotometric analysis of chemical compounds, consisting of a longish preferably cylindrical body (1) with a longitudinal central channel (2) which at the ends of the body (1) is limited by mutually parallel windows (3, 4) which are tightfitting against the channel (2) and transparent for the radiation used at the analysis. The channel (2) communicates at one end with connections (7, 8) for carrier gas and for injection of compounds and has at the other end an outlet (10) for the compounds and the carrier gas. Significant for the invention is that parallel with and at a distance from the mentioned channel (2) runs a second channel (11) serving for separation and connected between the connections (7, 8) and said end of the first mentioned channel (2). In this channel (11) there is a replaceable column tube (12) with filling of known composition. |
