JPS6258760U

JPS6258760U -

Info

Publication number: JPS6258760U
Application number: JP15066185U
Authority: JP
Priority date: 1985-09-30
Filing date: 1985-09-30
Publication date: 1987-04-11

Description

[Brief explanation of the drawing]

第１図はこの考案に係る液体クロマトグラフの
一実施例を示す構成説明図である。１……液体クロマトグラフ、２……第１切換バ
ルブ、３……第２切換バルブ、４……臨界槽、５
……バルブ作動制御手段、６……第１移動相供給
路、７……二酸化炭素供給路、８……第１プレカ
ラム、９……第１移動相排出路、１０……背圧抵
抗部、１３……試料注入部、１４……第１送液ポ
ンプ、１６……二酸化炭素供給ポンプ、１７……
第２プレカラム、１８……二酸化炭素排出路、１
９……第２移動相供給路、２１……分離カラム、
２４……第２送液ポンプ。 FIG. 1 is a configuration explanatory diagram showing one embodiment of a liquid chromatograph according to this invention. 1... Liquid chromatograph, 2... First switching valve, 3... Second switching valve, 4... Critical tank, 5
... Valve operation control means, 6 ... First mobile phase supply path, 7 ... Carbon dioxide supply path, 8 ... First precolumn, 9 ... First mobile phase discharge path, 10 ... Back pressure resistance section, 13... Sample injection unit, 14... First liquid feeding pump, 16... Carbon dioxide supply pump, 17...
2nd precolumn, 18... carbon dioxide discharge path, 1
9...Second mobile phase supply path, 21...Separation column,
24...Second liquid feeding pump.

Claims

[Scope of utility model registration request]

The outlet side of the first mobile phase supply path, which is equipped with a first liquid pump and a sample injection part in this order; the outlet side of the carbon dioxide supply path, which is equipped with a carbon dioxide supply pump; the inlet and outlet sides of the first precolumn; It has six ports that connect the inlet side of the mobile phase discharge path and the inlet side of the back pressure resistance section, respectively, and connects the first mobile phase supply path, the first precolumn, and the first mobile phase discharge path in this order, and also connects the first mobile phase supply path, first precolumn, and first mobile phase discharge path in this order, and A first switching valve that connects the carbon supply path and the back pressure resistance section;
The inlet side and outlet side of the precolumn, the inlet side of the carbon dioxide discharge path, the outlet side of the second mobile phase supply path equipped with the second liquid feed pump, and the inlet side of the separation column equipped with the detection/discharge path on the exit side. a second switching valve having six connecting ports, connecting the back pressure resistance section, the second precolumn, and the carbon dioxide discharge path in this order, and connecting the second mobile phase supply path and the separation column;
A critical tank that seals and stores the first switching valve, first precolumn, and back pressure resistor in a state above the critical temperature and critical pressure of carbon dioxide, and the flow path is switched to the first switching valve after a preset time has elapsed from sample injection. A signal is output, the carbon dioxide supply path, the first precolumn, and the back pressure resistance section are connected in this order, and after a preset time has elapsed since this connection, a flow path switching signal is output to the second switching valve, and the second A liquid chromatograph comprising a mobile phase supply path, a valve operation control means for connecting a second precolumn and a separation column in this order.