211results about How to "Facilitated ionization" patented technology

System for control of ion species behavior in a time-varying filter field of an ion mobility-based spectrometer to improve species identification for explosives detection.

The invention discloses a sewage purifier, which comprises polyhydroxyalkanoate, diatomite, humic acid, a bioactivator, inorganic metal salt and other substances. The invention also discloses a sewage purification method by utilizing the sewage purifier. A completely biodegradable material polyhydroxyalkanoate is used as a sustained material of the bioactivator, and the completely biodegradable material is slowly degraded and releases the bioactivator so as to realize the long-term high-efficiency purification function of the bioactivator; and by combining the effects of aquatic plants, phosphorus, nitrogen, polycyclic aromatic hydrocarbon and heavy metals in the sewage are purified and treated, so the sewage purifier has better sewage treatment effect.

System for control of ion species behavior in a time-varying filter field of an ion mobility-based spectrometer to improve species identification for explosives detection.

The invention relates to a microwave plasma biomass gasification fixed-bed gasification furnace and a process, comprising a vertically arranged furnace body; a gasification furnace clearance zone is arranged at the upper part of the furnace body; a fixed bed is arranged at the lowest part of the furnace body; an raw material and fuel inlet, a product gas outlet and an oxygen / steam inlet are arranged on the furnace body; a slag notch is arranged at the bottom of the furnace body, and a synthesis gas monitoring unit is arranged at the position of the product gas outlet. The gasification furnace and the process are characterized in that: at least one microwave plasma generating device is arranged on the furnace body, the characteristics of high dispersion degree and high ionization of microwave plasma are adopted to achieve high-efficiency conversion of biomass fuel chemical energy in the furnace. The cold gas efficiency can be significantly higher than that of the conventional biomass gasification process and can reach more than 85%. Non-equilibrium cleavage reaction is carried out to tar and the like in synthesis gas, so that tar content is very low, direct industrialization utilization can be achieved, and the follow-up process is simple and reliable. No special requirements on the fuel particle size are demanded, simple breaking operation is only needed without complex processing, and the economy is good.

The invention discloses a deposition method of a low-stress corrosion-resistant multilayer diamond-like carbon (DLC) film. A vacuum cathode arc source deposition process and a plasma-reinforced chemical vapor deposition process are alternately adopted to alternately deposit hydrogen-free and hydrogen-containing DLC films. The method can deposit a micron-sized-thick multilayer DLC film, which has the advantages of high hardness, low stress, favorable bonding properties, favorable corrosion resistance and high stability, on the surface of a workpiece, thereby greatly prolonging the service time of the workpiece in a liquid medium environment.

A laser atom probe (100) situates a counter electrode between a specimen mount and a detector (106), and provides a laser (116) having its beam (122) aligned to illuminate the specimen (104) through the aperture (110) of the counter electrode (108). The detector, specimen mount (102), and then be pulsed to bring the specimen to ionization. The timing of the laser pulses may be used to determine ion departure and arrival times allowing determination of the mass-to-charge ratios of the ions, thus their identities. Automated alignment methods are described wherein the laser is automatically directed to areas of interest.

The invention discloses a general-purpose nanochip for mass spectrometry, and relates to the technical field of mass spectrometry. The host material of the nanochip is silicon-based semiconductor material, array spotted holes are distributed at the surface of the host material, the inner surfaces of the spotted holes are nanostructures; the surface of the host material has regional hydrophobic modification, the internal portions of the array spotted holes are hydrophilic zones, and the outer portions of the array spotted holes are hydrophobic zones; or the internal portions of the array spotted holes are hydrophobic zones, and the outer portions of the array spotted holes are hydrophilic zones. The present invention further discloses a preparation method and a clinical application of the nanochip. The nanostructures can be used to extract the molecules at the surface of the sample of the biological tissue sample to be tested to improve the laser energy absorption and utilization so asto improve the ionization efficiency and enhance the mass spectrometry signals. The general-purpose nanochip can be widely applied to the field of clinical testing.

A system for separating oxygen from air operates at a pressure less than atmospheric. The oxygen separation system includes an entry port for ambient air, and at least two separate exhaust ports through which separate exhaust streams are drawn by separate suction sources. The oxygen separation system further includes a low-energy ionization portion that favors creation of molecular oxygen ions, and a higher-energy portion disposed between the ionization portion and one of the exhaust ports. A plurality of gas-permeable electrodes are charged to different voltages to provide the different portions inside the separator. An exhaust stream taken from the anode side of the separator is enriched in oxygen relative to ambient air.

The invention provides a mass spectrometry system and a working method thereof. The mass spectrometry system includes an ion source, a sampling device and a mass spectrometer. The sampling device includes a guide rail; a support suitable for moving on the guide rail; a bearing piece made of hydrophobic material and having two ends fixed on the support; at least two conveying parts made of hydrophilic material and each including a first part arranged on the bearing piece and a second part connected with the first part and protruding into a container; the container arranged on the support and accommodating to-be-detected samples; a drive module driving the support to move on the guide rail so as to enable the central axis of an exit port of the ion source to penetrate through the first part, wherein the adjacent conveying parts are not in contact. The system provided by the invention has advantages of good accuracy, high flexibility and the like.

A laser atom probe (100) situates a counter electrode between a specimen mount and a detector (106), and provides a laser (116) having its beam (122) aligned to illuminate the specimen (104) through the aperture (110) of the counter electrode (108). The detector, specimen mount (102), and / or the counter electrode may be charged to some boost voltage and then be pulsed to bring the specimen to ionization. The timing of the laser pulses may be used to determine ion departure and arrival times allowing determination of the mass-to-charge ratios of the ions, thus their identities. Automated alignment methods are described wherein the laser is automatically directed to areas of interest.

The invention provides a combined ionization source based on a vacuum ultraviolet lamp and discharge ionization, and particularly relates to that plasma generated by the discharge ionization is guided into the position under the vacuum ultraviolet lamp through a capillary tube, and molecular ionization is conducted on the sample under the radiation of the ultraviolet lamp. The combined ionization source based on the ultraviolet lamp and the discharge ionization comprises the capillary tube, a discharging cavity, the vacuum ultraviolet lamp, an ion transmission area, a cavity body and an ion mass analyzer. The combined ionization source based on the ultraviolet lamp and the discharge ionization has the advantages that the plasma generated by the discharge ionization is guided into an ionization area through the capillary tube, and formed metastable atoms and ions can conduct molecular ionization on the sample in the ionization area; meanwhile, the air pressure in a discharge area is controlled by adjusting the length of the capillary tube. The combined ionization source based on the ultraviolet lamp and the discharge ionization has the advantages of being high in ionization efficiency and low in energy consumption.