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公开(公告)号：EP2884254B8
公开(公告)日：2018-04-18
申请号：EP14004012.2
申请日：2014-11-27
CPC分类号： G01N33/0011 , G01N1/02 , G01N1/2214 , G01N1/405 , G01N2001/022 , G01N2001/028 , G01N2001/4027 , H05B3/24 , H05B2203/003 , H05B2203/037
摘要： A flash heater element (200) includes a first surface (202) having a central region (234) and an electrical flow path (220) disposed on the first surface. The electrical flow path includes a central portion (240) disposed at least partially within the central region and a peripheral portion (238) disposed peripherally outwardly from the central region. A width (244) of the electrical flow path is greater within at least a portion of the central portion than the width (246) of the electrical flow path within the peripheral portion. Also disclosed is a detection system (100) comprising a housing (110), a desorber (112), a heater (130), flash heater element (200) and a detector (114).
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公开(公告)号：EP2778669B1
公开(公告)日：2018-08-22
申请号：EP14000925.9
申请日：2014-03-13
CPC分类号： G01N27/622 , H01J49/427
摘要： An apparatus for detecting constituents in a sample includes a casing and an ionization chamber defined by the casing. The apparatus also includes an ion collector positioned downstream of the ionization chamber. The apparatus further includes a spectral analysis device coupled to the ion collector. The spectral analysis device is configured to generate a detection spectrum representative of ions collected at the ion collector. The detection spectrum includes an analyte peak portion and a peak tailing portion. The apparatus also includes a control system that is configured to generate a first pulse (210) having a first polarity to initiate a discharge of stored ions from the ionization chamber. The control system is also configured to generate a second pulse (212) substantially immediately after the first pulse. The second pulse has a second polarity opposite the first polarity and is configured to reduce the peak tailing portion.
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