7 results about "Methylmercury" patented technology

The application discloses an improved plant liquid culture medium, which comprises inorganic nutrients required by plant basic growth and does not comprise compounds containing an EDTA ligand skeleton and iodide. The application also discloses application of the improved plant liquid culture medium in mercury compound metabolism research. The application is based on the technical problem of finding that a culture medium substrate mediates abiotic transformation and causes error defects, and by eliminating the compounds containing the EDTA ligand skeleton and the iodide which induce abiotic transformation of mercury compounds, the application is applied to block the abiotic transformation path of methyl mercury in the mercury compound metabolism research, and eliminate the 'false positive' error in the metabolism research.

The invention provides a preparation method of a phenylboronic acid functionalized silicon quantum dot fluorescent probe and application of the phenylboronic acid functionalized silicon quantum dot fluorescent probe in detection of mercury ions and methyl mercury ions, and relates to the technical field of detection of heavy metal mercury ions and methyl mercury ions. In the presence of mercury ions (Hg < 2 + >) and methyl mercury ions (CH3Hg < + >), silicon point fluorescence is quenched. By combining ultraviolet portable equipment and combining a silicon puncture-Hg < 2 + > and silicon puncture-CH3Hg < + > system with RGB value acquisition and conversion of a smart phone platform, rapid and high-sensitivity detection of mercury ions and methyl mercury ions in an environmental water body is realized. The detection method disclosed by the invention has the advantages of simplicity and convenience in operation, rapid feedback, high sensitivity, good repeatability, high stability, strong accuracy and the like, can intuitively realize rapid determination of mercury ions and methyl mercury ions in a water sample in real time, and widens the application direction of silicon dots in the aspect of environmental detection.

The application provides a biochar modifier for reducing plant mercury and soil methylmercury, and a preparation method and application thereof. The biochar modifier provided by the application comprises biochar loaded with selenium and phosphorus. The preparation method of the biochar modifier comprises the following steps: dipping biochar into a solvent containing a selenium modifier and a phosphorus modifier and reacting, and then performing solid-liquid separation on the reaction solution to obtain a solid phase; and the solid phase is dried to obtain the biochar modifier. The biochar modifier provided by the application has a remarkable effect of reducing plant mercury and soil methylmercury, has a simple preparation process, does not cause secondary selenium pollution, and is easy to popularize.

The invention relates to the technical field of biological analysis, in particular to a method for analyzing a methyl mercury tolerance key gene of tetrahymena thermophila. The method comprises the following steps: respectively culturing tetrahymena thermophila in a culture medium containing methyl mercury to respectively obtain experimental groups; culturing tetrahymena thermophila in a culture medium without methyl mercury to obtain a control group; carrying out pretreatment on the tetrahymena thermophila of the experimental group and the control group, then carrying out detection and quality control, respectively collecting RNA data of the experimental group and the control group, and then carrying out data processing; finally, screening differential genes of the experimental group and the control group, and then carrying out pathway enrichment analysis by adopting KEGG to obtain changes of related pathways of the tetrahymena thermophila in response to methylmercury stress, and further selecting pathway-related key genes as key genes of the tetrahymena thermophila in tolerance to methylmercury.

The application relates to the field of agricultural heavy metal microbial remediation, and discloses a new sulfate-reducing strain, a new sulfate-reducing strain Desulfovibrio sp.GLDM01 which has been preserved in the China Center for Type Culture Collection on March 9, 2026, and the preservation number is CCTCC NO:M 2026395. The new sulfate-reducing strain has the functions of adsorbing cadmium elements in soil and improving the ability of rice to enrich methylmercury, thereby providing new strain resources for farmland heavy metal remediation.

The application discloses a method for preparing high-purity vanadium pentoxide in a short process, and belongs to the technical field of non-ferrous hydrometallurgy. The method comprises the following steps: firstly, after pretreatment of vanadium-containing leaching solution, sodium sulfide and na-methylmercury sulfonate are added, aging is carried out, impurities are removed, hydrogen peroxide is added and heated, pH is adjusted, attapulgite is added, aluminum sulfate is added, aging and impurity removal are carried out; secondly, vanadium precipitation treatment is carried out, ammonium polyvanadate is washed, dried and calcined, and high-purity vanadium pentoxide with a grade of greater than or equal to 99.5% is obtained. In the application, the vanadium-containing leaching solution is used to produce high-purity vanadium pentoxide, the impurity removal process is advanced, high-purity vanadium pentoxide with a grade of greater than or equal to 99.5% can be prepared, and the vanadium recovery rate can reach 98%. The preparation process is greatly simplified, the production efficiency is high, the cost is reduced, the treatment time is short, energy saving and emission reduction and green production are beneficial, the production cost is reduced by 3000-5000 yuan / ton, the vanadium recovery rate can be increased by about 3%, the process is more environmentally friendly, the vanadium recovery rate is higher, and the production efficiency is also higher. The application is suitable for preparing high-purity vanadium pentoxide in a short process.