(19)
(11) EP 0 169 469 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.10.1987 Bulletin 1987/42

(43) Date of publication A2:
29.01.1986 Bulletin 1986/05

(21) Application number: 85108792

(22) Date of filing: 13.07.1985
(84) Designated Contracting States:
DE FR GB

(30) Priority: 27.07.1984 US 635171

(71) Applicant: BASF CORPORATION
 ()

(72) Inventors:
  • Ring, Russel David
     ()
  • Bourg III, Roger
     ()

   


(54) Analytical apparatus


(57) The instant invention relates to a mass spectometer having an inlet leak and a flow-by sampling arrangement. In accordance with the invention, aerosols and solid impurities are removed from the sample by packing a portion of the flow-by tubing prior to the inlet capillaries or the inlet leak of the mass spectrometer with a packing material coated with a suitable nonvolatile liquid. The packing must have the spaces between the particles thereof small enough to remove fine particles while still permitting adequate flow. With this apparatus the solids are collected by simple filtration through the packing material while the aerosols flowing into the packing are partitioned into the nonvolatile liquid coating the particles and are released at a later time into the sample stream as a vapor or gas.






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