发明名称 |
CHLORINE SPECIFIC GAS CHROMATOGRAPHIC DETECTOR |
摘要 |
A method and apparatus are set forth which enables a gas chromatographic column output to be connected with a pulse discharge chamber in which chemically bound chlorine in volatile organic or inorganic samples is measured. A spark discharge is formed in the chamber to ionize and excite helium molecules to a metastable state. In turn, that transfers excitation to a trace of krypton gas in the chamber which is ionized, and the ionized krypton then preferentially binds with chemically bound chlorine. The latter binding occurs with the liberation of a photon centered at about 222 nanometers thereby defining a spectral region of interest which is measured by a photomultiplier tube to quantify chemically bound chlorine.
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申请公布号 |
CA2213974(A1) |
申请公布日期 |
1999.02.25 |
申请号 |
CA19972213974 |
申请日期 |
1997.08.25 |
申请人 |
VALCO INSTRUMENTS CO., INC. |
发明人 |
STEARNS, STANLEY D.;WENTWORTH, WAYNE E. |
分类号 |
G01N30/64;(IPC1-7):G01N21/75;G01N30/00;G01N30/74 |
主分类号 |
G01N30/64 |
代理机构 |
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代理人 |
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地址 |
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