公开(公告)号：EP1521954A2

公开(公告)日：2005-04-13

申请号：EP03764902.7

申请日：2003-07-13

申请人： Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung

发明人： SAUTER, Eberhard, J.

IPC分类号： G01N1/16

CPC分类号： G01N1/12 ,  G01N1/16

摘要： The simultaneous taking of water samples from the bottom of a column of water in the bed water over a water bed is of use for scientific investigation of the transition zone between the water bed and the water column lying above the same, for the determination of parameter gradients. Conventional bed water sampling devices with a horizontal arrangement of the sample containers on different water levels do not generally permit a non-invasive sampling. According to the invention, said ground water sampling device thus comprises a central retainer rod (2) for the sample containers (3), which permanently rotate freely and easily in the bottom currents by means of a flow vane (6). All sample containers (3) comprise sealing devices (16) on both front faces (14, 15) and are flushed through with bed water originating from the corresponding level before the sampling. All sealing devices (16) are essentially instantaneously operated by means of a time-controlled actuator (10) which is mechanically activated by pushing up a trigger plate (8) after the adequately long placement of the ground water sampling device (1). High-resolution profiles of various parameters can thus be simply, precisely and reproducibly determined even in water of great depth, by means of said simple and robust bed water sampling device (1), which can be lowered by means of a simple steel cable (7).

公开(公告)号：EP1190240B1

公开(公告)日：2004-02-04

申请号：EP00940152.2

申请日：2000-04-26

申请人： Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung

发明人： OHM, Klaus

IPC分类号： G01N27/07 ,  G01N33/18

CPC分类号： G01N27/06 ,  G01N27/046

公开(公告)号：EP1348123A1

公开(公告)日：2003-10-01

申请号：EP01909430.9

申请日：2001-01-05

申请人： Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung ,  GESELLSCHAFT ZUR FÖRDERUNG DER SPEKTROCHEMIE UND ANGEWANDTEN SPEKTROSKOPIE E.V. ,  Impres GmbH Ingenieurbüro

发明人： KRIEWS, Michael ,  DUNKER, Erich ,  REINHARDT, Heiko ,  BENINGA, Ingo ,  HOFFMANN, Erwin ,  LÜDKE, Christian

IPC分类号： G01N27/62 ,  H01J49/04 ,  G01N1/42 ,  G01N1/00

CPC分类号： H01J49/105 ,  G01N1/04 ,  G01N1/42 ,  G01N2001/045 ,  G01N2033/1873 ,  H01J49/0463

摘要： During an inventive laser ablation ICP-MS analysis method, solid matter samples (39) are examined in a frozen initial state. To this end, the sample chamber (2) as well as the carrier gas stream (12), which transports the ablated sample particles into the plasma (ICP-MS), are cooled to low temperatures (TK). The physical conservation, especially of ice samples (3), results in obtaining a particularly high local resolution and thus a high time resolution since their annual layers often remain preserved. An advantageous device (1) is provided with an insulated chamber (2) that can be cooled and with a simple circulating cooling device (17). The laser ablation analysis method can be used for all freezable sample materials used in mass spectrometry.