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760 results about "Toxicant" patented technology

A toxicant (pronounced TOK-sih-kunt) is any toxic substance. Toxicants can be poisonous and they may be man-made or naturally occurring. In contrast, a toxin is a poison produced naturally by an organism (e.g. plant, animal, insect). The different types of toxicants can be found in the air, soil, water, or food.

Method for detecting unknown poison by establishing liquid chromatography-mass spectrometry database

The invention relates to a method for detecting unknown poison by establishing a liquid chromatography-mass spectrometry database, in particular to a method used for detecting unknown poison during food poisoning. According to the method, firstly, an ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry method is used for establishing a liquid chromatography-mass spectrometry database of common poison; then, a sample is subjected to supersonic extraction with methyl alcohol or acetonitrile, liquid chromatography-mass spectrometry data of an extracting solution are measured similarly and searched and compared in the liquid chromatogram-mass spectrometry database of common poison according to the retention time of the sample and mass spectrometry fragments, and the variety of the unknown poison in the sample is judged; and the unknown poisoning sample is simply extracted and directly measured and compared, and a screening result can be acquired in one hour, so that the detecting and treating time of the sample is greatly shortened, the detecting efficiency is improved, and technical support is provided for related events such as food poisoning and the like caused by unknown reasons.
Owner:BEIJING CENT FOR DISEASE PREVENTION & CONTROL

Novel mesoporous material for absorbing granule phase substance, coke tar, phenol and amine nitrite in mainstream flue gas of tobacco

InactiveCN101433818ANo change in microscopic morphologyNo change in macroscopic appearanceTobacco smoke filtersSilicon compoundsParticulatesToxicant
The invention discloses a novel mesoporous material for adsorbing tar, phenol and special nitrosamine in tobacco and so on, in mainstream smoke of the tobacco. The mesoporous material with high adsorption property is used as an addition material for filter tips of cigarettes; and the mesoporous material is a mesoporous molecular sieve with a three-dimensional mesh microstructure and monolithic appearance such as SBA-15,or is a SBA-15 mesoporous molecular sieve material which is plated with a liquid film or is modified by metal oxides such as zirconia and is provided with the three-dimensional mesh microstructure and the monolithic appearance. The invention adopts a more convenient and effective method to develop the SBA-15 mesoporous molecular sieve material with the three-dimensional mesh microstructure and the monolithic appearance and modify the surface/a surface layer, has good performance of intercepting environmental toxins such as interception particulate phase matters and phenol in smoke, has the characteristics of saving energy, saving time, and reducing environmental pollution during the preparation, can also reduce cost, and has remarkable economic benefit and social benefit.
Owner:NANJING UNIV

Low surface energy nano polyurethane anti-fouling paint and preparation method thereof

The invention, belonging to the field of paints, discloses a low surface energy nano polyurethane anti-fouling paint and a preparation method thereof. The paint is mainly applied in preventing fouling for ships. The low surface energy nano polyurethane anti-fouling paint comprises 20-60 wt% of organosilicon modified acrylic resin, 0.5-10 wt% of polydimethylsiloxane resin, 0.5-10 wt% of fluoroal kylsilane modified nano silicon dioxide, 20-40 wt% of extender pigment, 5-15 wt% of auxiliary agent, and 10-30 wt% of organic solvent. The preparation method comprises the following steps: 1) carrying out surface treatment with fluoroal kylsilane on nano silicon dioxide; 2) preparing the treated fluoroal kylsilane modified nano silicon dioxide into a concentrated slurry; and 3) mixing the fluoroal kylsilane modified nano silicon dioxide concentrated slurry with other raw materials to obtain a component A of the anti-fouling paint; dissolving a curing agent to obtain a component B, adding the component A in the component B, curing 30 min-15 day at a temperature of 10-30 DEG C to form the low surface energy nano polyurethane anti-fouling paint. The anti-fouling paint prepared by using a new technique of nanoparticle treatment has the advantages of low surface energy, no toxicant release, safety, and environmental protection.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1

Pig feed mycotoxin degrading adsorbent and application thereof

The invention discloses a mycotoxin degrading adsorbent, which contains bacillus subtilis, lactobacillus plantarum, lactobacillus acidophilus, leuconostoc lactis, lactobacillus delbrueckii, lactobacillus fermenti, lactobacillus salivarius, vitamin C, vitamin E, radix astragali, zinc methionine, potassium chloride, cassia bark, clove, oriental wormwood, folium artemisiae argyi, sweet wormwood, wild chrysanthemum flower, semen plantaginis, yeast cell wall and phytase. The mycotoxin degrading adsorbent disclosed by the invention has multiple effects including generation inhabitation, degradation and adsorption on various common mycotoxins, and can additionally boost immunities of pigs and promote excretion of toxic substances; the mycotoxin degrading adsorbent has excellent comprehensive performance and plays a remarkable role on productivities of piglets, and the mycotoxin degrading adsorbent can reduce disease rate, improve daily gain, increase feed digestibility and reduce feed conversion ratio. Moreover, the mycotoxin degrading adsorbent is low in dosage but effective and free from adsorption on drugs and other nutrient substances, and the adsorbent can be biologically degraded after being secreted and avoid pollutants; and the mycotoxin degrading adsorbent has good application value in breeding industry.
Owner:佛山播恩生物科技有限公司

Achromobacter xylosoxidans subsp.xylosoxidans LH-N25 and heterotrophic nitrification and aerobic denitrification microorganism bactericide and preparation method and use thereof

ActiveCN103122332ASolve the difficult removal of total nitrogenFacilitate large-scale production applicationBacteriaMicroorganism based processesToxic materialTotal nitrogen
The invention discloses achromobacter xylosoxidans subsp.xylosoxidans LH-N25 with CGMCC No.6972. The invention also discloses a heterotrophic nitrification and aerobic denitrification microorganism bactericide. The microorganism bactericide comprises achromobacter xylosoxidans subsp.xylosoxidans LH-N25 or also comprises paracoccus aminovorans LH-N40; and the strains are combined according to any ratio. The invention also discloses a preparation method of the microorganism bactericide. The microorganism bactericide disclosed by the invention not only can solve the problem that total nitrogen cannot be easily removed in the traditional reactor, but also can effectively remove ammonia nitrogen and total nitrogen in a water body in the same reactor, and has tolerance and degradation ability on the toxic substances such as phenols, amines, hetercyclics, cyanogens and polyaromatic hydrocarbon in the wastewater at the same time. The microorganism bactericide is especially suitable for chemical wastewater containing nitrogen, is simple in treatment process, stable in effect, and resistant to impact of environmental toxic substances, and has a wide application prospect in treatment of chemical wastewater containing nitrogen.
Owner:BLUESTAR LEHIGH ENG INST CO LTD

Series quadrupole-rod gas-chromatographic mass spectrometry detection method for 35 toxic medicaments in urine

The invention discloses a series quadrupole-rod gas-chromatographic mass spectrometry detection method for 35 toxic medicaments in urine. The series quadrupole-rod gas-chromatographic mass spectrometry detection method comprises the steps of constructing a multiple-reaction detection method on a series quadrupole-rod gas chromatograph-mass spectrometer through standard substances of 35 toxicants (medicines), and determining 2-3 pairs of feature parent ions and daughter ions and the retention time of each toxicants (medicines); extracting a urine sample to be detected through diethyl ether, performing ultrasonic and centrifugal treatment, blow-drying and dissolving, and then qualitatively and quantitatively analyzing the toxicants (medicines) through a tandem mass spectrum MRM. By the adoption of a series quadrupole-rod gas-chromatographic-mass spectrometry/mass spectrometry method (GC-MS/MS), the method disclosed by the invention can quickly screen 35 conventional toxicants (medicines) in the urine of a human body; a detection result is accurate, sensitive and quick; the recycling rate of toxicants (medicines) is 80.82-118.56 percent; the detection limit is up to 0.0014-1.8 micrograms per microliter.
Owner:FUJIAN INT TRAVEL HEALTH CARE CENT
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