52results about How to "Reduce residual concentration" patented technology

The invention discloses a method for reducing organophosphorus pesticide residue in fruit and vegetable juice, and belongs to the technical filed of food safety. The fruit and vegetable juice to be treated is added to a treatment chamber by an ultrasonic device, a constant temperature circulator is opened the temperature of which is set to perform precooling on the fruit and vegetable juice to betreated; the ultrasonic treatment power is set, and the temperature of the constant temperature circulator is set to cool the fruit and vegetable juice to be treated by circulating water; the ultrasonic device is started to begin ultrasonic treatment and obtain the treated fruit and vegetable juice. After the fruit and vegetable juice is treated by the ultrasonic technology, the concentration of the organophosphorus pesticide in the treated fruit and vegetable juice is significantly reduced. In addition, by adopting a circulating water cooling device, the method avoids adverse effect of heating on the flavor of the fruit and vegetable juice after the ultrasonic treatment. The method is easy and feasible, and can be used for removing the organophosphorus pesticide in other liquid food.

The invention relates to the field of organic waste treatment, and discloses a treatment process for antibiotic residues, wherein the treatment process includes: in the presence of acidic substances, under airtight conditions, at 40-260 ° C, the treated Antibiotic bacteria residues are treated for degradation, and then the degradation products are separated to obtain solid-phase material flow and gas-phase material flow, and the gas-phase material flow is subjected to post-processing. Through the above technical proposal, the residual antibiotics in the antibiotic residues can be effectively degraded while the organic nutrients therein can be effectively retained, which provides a good precondition for the harmless utilization of the residues. Furthermore, the process of the present invention can effectively avoid the problem that the fungus residue releases an unpleasant smell during and after the treatment, and the treated fungus residue has no odor and is environmentally friendly.

The invention relates to the field of organic waste treatment, and discloses a process for treating antibiotic residues, wherein the treatment process includes: degrading antibiotic residues to be treated at 100-260°C under airtight conditions, and then The degradation products are separated to obtain a solid-phase material flow and a gas-phase material flow, and the gas-phase material flow is post-processed. Through the above technical proposal, the residual antibiotics in the antibiotic residues can be effectively degraded while the organic nutrients therein can be effectively retained, which provides a good precondition for the harmless utilization of the residues. Furthermore, the process of the present invention can effectively avoid the problem that the fungus residue releases an unpleasant smell during and after the treatment, and the treated fungus residue has no odor and is environmentally friendly.

The invention discloses a one-way breather valve of a dustproof mask. The breathing valve consists of a base and an upper cover, wherein the base is a basin-shaped plastic member; a column protrudes from the centre of the basin bottom and is provided with a circular hole at the centre; through holes are arranged at four sides of the basin bottom; a groove is arranged at the inner periphery of thebasin edge; the upper cover protrudes inwards; flanges at fours sides of the upper cover are embedded with the groove at the periphery of the base edge; the middle part of the upper cover is providedwith a plurality of support bars crossed and connected with each other and supporting four sides of the upper cover; a through hole is formed between the crossed support bars; a cylinder extends out of the centre of the crossed support bars and inserted in the central circular hole of the column at the centre of the basin bottom; a small hole is drilled at the centre of a silica gel thin film; and the cylinder of the upper cover is inserted in the small hole to rightly seal all through holes at the centre of the upper cover; and when a person exhales, the silica gel thin film is turned over or recovered by the air pressure. The invention has simple structure; in addition, the one-way breather valve of the dustproof mask is arranged on the mask, and the waste air in the body is instantly exhausted from the body on the exhale, so that the exchange of the inner air and the outer air is quickened, the retention time of the exhausted waste air in the mask is shortened, and the invention isbeneficial to the health of the wearer.

The invention discloses a method for simultaneously detecting 11 kinds of organophosphorus pesticide residues in Radix Paeoniae Alba by ultra-high performance liquid chromatography-mass spectrometry. In a centrifuge tube of 90 mg graphitized carbon black, vortex purification, take the supernatant liquid nitrogen and blow it to dryness, add acetonitrile to constant volume, use ultra-high performance liquid chromatography-tandem mass spectrometry to detect in multiple reaction monitoring mode, matrix standard curve external standard Legal amount. The 11 kinds of organophosphorus pesticides have a high linear fitting degree in the range of 2.5-200ng / mL, and the recoveries of 11 kinds of pesticides at the concentration of 0.05mg / kg are 70%-130%, and the relative standard deviation is ≤15%. Limit ≤ 0.002mg / kg. The method is fast and simple, with high sensitivity, precision and accuracy, and is suitable for the analysis and detection of 11 organophosphorus pesticides in Radix Paeoniae Alba.

The invention relates to a system for in-situ enhanced gas phase extraction and repair of soil organic pollutants by solar energy. Including gas phase extraction pipe 4 pipelines, water circulation system pipelines buried in organic pollutant soil, solar heat collection system 1, insulated water tank 2, gas purification system, soil water replenishment system; water circulation system pipelines and solar heat collection on the ground The system 1 is connected to form a solar circulating water heating system, the pipeline of the water circulation system is connected to the thermal insulation water tank 2 to form a thermal storage circulating water system of the thermal insulation tank, and the solar thermal collection system 1 is connected to the thermal insulation tank 2 to form a combined solar-thermal insulation tank heating system; There are pumps 12, 13, valves 7, 8, 9, 10, 11 on the pipelines of the solar circulating water heating system, the heat storage circulating water system of the insulated water tank, and the combined circulation water heating system of the solar-insulated water tank; 4 pipelines of gas phase extraction pipes It is connected with the gas purification system on the ground. This system uses solar energy to strengthen in-situ gas phase extraction to repair soil organic pollutants. The system is compact, easy to operate, and energy-saving.