摘要:
A spectroscope apparatus includes means for separating light from an object to be measured into spectral components, means for mixing that part of the spectral components which exists in a desired wavelength range, and means for forming an image of the to-be-measured body of mixed light. The image thus obtained is very useful for observing the state of a combustion flame, the progress of photochemical reaction, the progress of biochemical reaction, a desired tissue in a cell, and the state of a flame for analyzing a solution which contains a metal ion, by flame spectrophotometery, that is, provides accurate information and makes possible a precise control operation.
摘要:
An atomic spectrometer in combination with an atomizer apparatus for atomizing a test sample into an atomic state for analysis in the atomic spectrometer. The atomizer apparatus includes a heater for heating a sample to free individual atoms of the sample for atomic spectroscopy, a tube member containing a packing of an adsorbent, a reagent adsorbed on the adsorbent which reacts with a metal constituent in a sample to form a metal complex which adsorbs to the adsorbent at a first temperature and is volatile at a second higher temperature for desorption from the adsorbent, and a heater for heating the tube member.
摘要:
A burner assembly for an atomic absorption spectrometer having carrier (20) fixed to the burner head (14) and mounting a flame sensor (96) and an ignition device (16) so as to permit a single alignment of the flame sensor (18) and the ignition device (16) relative to the burner head (14) and subsequent movement or adjustment of the burner relative to the housing without changing the mutual positions of the ignition device (16) and the flame sensor (18) and while the flame is burning.
摘要:
A research burner having a water-cooled hemispherical head provided with aurved upper surface adapted as a seat for a flame which is surrounded by a shroud of inert gas. The burner provides for optical access to the various zones of the flame under study for both temperature and concentration of species in a compatible mixture.
摘要:
The invention concerns a device for guiding the sample flow in an analyzer, especially in an atomic absorption spectrophotometer, in order to accomplish an essentially even flow front. Consistent with the invention, the burner (11) has been equipped with a flow divider (12) that due to its advantageously chosen construction and manufacturing material also works as a drop eliminator that removes the harmful drops, which are present in the sample spray.
摘要:
The flame in a flame atomic absorption spectrophotometer is shut down while using nitrous oxide as the oxidant, without shifting to a different oxidant such as air, by flooding the burner with a substantial excess of nitrous oxide to blow out the flame.
摘要:
The surface and/or subsurface defects of the surface to be treated are detected, preferably over the entire said surface. The defects are eliminated by scarfing with a torch and/or by milling, following which the treated surface is inspected and cleaned. The detection, elimination, inspection, and cleaning devices are maneuvered by means of programmable robots or automatons controlled by a computer. The process may be applied on-line to hot, moving products (e.g., rolled or continuous cast products).
摘要:
An atomic spectroscopy surface burner, includes a housing having at least one channel for carrying fuel and at least one separate channel for carrying oxidant formed therein, the housing having an upper surface with two elongated slots formed therein, each of the slots being in communication with a respective one of the channels for delivering fuel and oxidant separately to the surface, and means for delivering a nebulized sample to the surface through one of the channels.
摘要:
A flame atomic absorption spectrophotometer burner apparatus for burning a fuel such as acetylene as one essential gas in the oxidant such as nitrous oxide as another essential gas includes a system for safely changing oxidants between air and nitrous oxide during start up. The system has a pressure sensor for sensing the pressure of at least one of the essential gasses, and a valve selectively operable in response to the pressure sensor for effecting the supplying of air as the oxidant and continuing to supply air as the oxidant when the pressure of the essential gas is low and for selectively switching to nitrous oxide as the oxidant only when the pressure of the essential gas is high.
摘要:
An automatic gas flow safety device or system is provided for use with an atomic absorption spectrophotometer burner. Generally speaking, a dual function pneumatic and electrical safety device is described which provides for a cut-off of the (acetylene) gas to the burner, upon monitoring an unacceptable air flow or electrical condition, to avert possible flash-backs at the burner. The invention basically comprises a pneumatic and electrical actuated means to control the on/off flow of gas to the burner determinative on the status of the air pressure and electrical power to the system.