68results about How to "Digest thoroughly" patented technology

The invention discloses a measuring method for quickly measuring the contents of heavy metals in tobacco by using a microwave digestion / ICP-MS (Inductively Coupled Plasma Mass Spectrometry) method. According to the measuring method, a microwave digestion pretreatment method is adopted, an ICP-MS is adopted to measure the contents of arsenic, plumbum, cadmium, chromium, copper, zinc, nickel and mercury elements in a digestion liquid, 75As, 208Pb, 111Cd, 53Cr, 63Cu, 66Zn, 60Ni and 202Hg are selected as mass numbers of the to-be-measured elements to reduce mass spectrum interference, and an internal standard element Rh is added in an off-line manner to inhibit the matrix effect. For to-be-measured ions with a certain mass-to-charge ratio, mass spectrum signal response is directly proportional to the number of ions entering the ICP-MS, the concentration of the elements in a sample is measured by measuring the number of mass spectrum signals, and the contents of the elements are calculated by a standard curve method. The method is quick and simple, can efficiently and accurately measure the contents of heavy metals in tobacco and tobacco products, and provides an effective scheme for finding out the content level of heavy metals in cigarettes in China to reduce harm to human health.

The invention relates to a low-consumption and environment-protection method for extracting chitin and bioactive substances from shrimp shell, which comprises the steps that: the fresh shrimp shell is arranged in a microwave oven for heating, then is arranged in the NaOH solution and boiled for 1 to 2 hours, then is immersed in the HCI solution for immersion; the shrimp shell is treated again with the NaOH solution, and is arranged in the sunshine and heavily sunned for decoloration after immersed in the HCI solution, thus the chitin product is obtained; when protein powder is extracted, protein is separated from the alkali treatment solution through the physical process of freezing and thawing; and when astaxanthin product is extracted, papain is adopted for degradation, then astaxanthin is obtained through ethanol extraction. The invention has the advantages of high material utilization ratio of shrimp shell, less acid and alkali consumption, less dosage of organic solvent, complete separation of various useful substances in shrimp shell, high purity of the obtained product, no discharge of waste acid, waste alkali and harmful organic solvent during reaction process, and effective use of various treatment solutions generated during reaction.

The invention relates to a material analysis method, in particular to an alloy chemical analysis method. A dissolution method of a high carbon ferrochrome sample comprises the following steps: firstly, placing the high carbon ferrochrome sample to be measured into a microwave digestion tank, then adding a mixture of concentrated hydrochloric acid, concentrated nitric acid and hydrofluoric acid, and finally sealing the microwave digestion tank and putting into a microwave digestor for dissolution, wherein, process parameters obtained during the dissolution in the microwave digestor are as follows: the power is 400-1600w, the temperature is increased from normal temperature to 195 DEG C and the digestion time is 65-110min. 10-25mL of the mixture of the concentrated hydrochloric acid, the concentrated nitric acid and the hydrofluoric acid are needed when 0.0500-0.2000g of the high carbon ferrochrome sample is added. As microwave digestion method is adopted in the alloy chemical analysis method, the microwave activation characteristic causes the sample to be dissolved more completely and the sample can be dissolved without high-temperature fuming or fusion.

The invention provides a decomposing treatment method for medical garbage which which mainly comprises the following steps, first, loading the medical garbage into a degradation apparatus, charging oxygenizing bactericidal agent and amendment, then carrying out warming, pressurizing germicidal treatment at the temperature of 150-280 deg. C, the pressure of 0.2-1.2 MPa, finally opening the discharge port of the degradation apparatus, so as to discharge the residue out of the degradation apparatus for sorting treatment.

The invention discloses a pretreatment method for detecting metal elements in kapok powder. The pretreatment method comprises the steps that 1, kapok is crushed and then put into a digestion tank, and nitric acid and hydrogen peroxide are added into the digestion tank; 2, the digestion tank is put into a digestion instrument for microwave digestion; 3, digestion sample liquid in the digestion tank is transferred into a polytetrafluoroethylene crucible, the digestion tank is washed with ultrapure water, all washing liquid is gathered into the polytetrafluoroethylene crucible, and heating is performed for removing the acid; 4, when the polytetrafluoroethylene crucible is cooled to room temperature, the liquid in the polytetrafluoroethylene crucible is all transferred into a volumetric flask, the polytetrafluoroethylene crucible is washed with the ultrapure water, and all the washing liquid is gathered into the volumetric flask, and constant volume is performed with nitric acid with the mass fraction of 2%. Compared with traditional open type methods such as an ashing method and an acid heating digestion method, the pretreatment method has the advantages of being short in time consumption, little in pollution and reagent amount consumption, thorough in digestion and good in reproducibility, and the problem that organic substances left in sample decomposition disturb detection can be effectively solved.

The invention relates to the field of forensic medical inspection, and relates to a forensic medical diatom inspection method. It at least includes the following steps: (1) Microwave digestion: add concentrated nitric acid and hydrogen peroxide solution to the test sample and then carry out microwave digestion; (2) Vacuum suction filtration: carry out vacuum suction filtration on the digestion solution, and then Add ultra-pure water to continue the suction filtration to make the surface of the filter membrane close to neutral, and finally add absolute ethanol to remove the water in the filter membrane by suction filtration; (3) Scanning electron microscope automatically takes pictures and stores the images (5) Qualitative and quantitative analysis of diatoms: using manual identification Check, classify and statistically process the diatoms in the captured field of view images by means of automatic recognition by computer. The invention has high detection sensitivity, can effectively avoid pollution, is simple, efficient, environmentally friendly, and has accurate qualitative and quantitative analysis, greatly improves the working environment of forensic diatom inspection technicians, reduces labor intensity, and has good application in the practice of forensic drowning diagnosis prospect.

The invention provides a traditional Chinese medicine composition for treating a cad pig and a preparation method thereof. According to the traditional Chinese medicine composition, a traditional Chinese medicine composition 1 has the efficacy of relieving exterior syndrome by diaphoresis, resolving the flesh and dispelling the wind, invigorating pulse-beat, supporting Yang and resolving Qi, and the like; a traditional Chinese medicine composition 2 has the efficacy of clearing away heat and toxic materials, cooling blood and purging intense heat, and the like; a traditional Chinese medicine composition 3 has the efficacy of warming middle-Jiao to dispel cold, tonifying Qi and nourishing spleen, promoting transportation and transformation, and the like; aiming at the qi-blood deficiency type cad pig and the Qi-stagnancy and blood stasis type cad pig, the whole formula adopts therapeutic principles of tonifying middle-Jiao and Qi, drying the spleen to promote the stomach, promoting flow of qi and blood and attacking accumulation to urge congestion according to the holism concept and the differential treatment of the Chinese veterinarian theory; treatment aiming at the pathogenesis and the symptom is carried out on a cad inducing factor, and the growth and development of pigs are promoted, a damaged organ can be quickly repaired, no drug residue exists, recrudescence is avoided, the immunocompetence of the swinery is enhanced and the self-repairing capability and adaptive capacity to environment are realized.