10 results about "Mercury (element)" patented technology

The invention relates to a method for detecting element impurities of a total flavone extract of immature bitter orange or bitter orange. The method adopts ICP-MS (Inductively Coupled Plasma Mass Spectrometry) to simultaneously determine seven elements, namely arsenic (As), cadmium (Cd), mercury (Hg), lead (Hg), cobalt (Co), nickel (Ni) and vanadium (V). The method for determining the element impurities of the total flavone extract of the immature bitter orange or the fructus aurantii is established, the theoretical basis of the method is sufficient, and the method is proved to be strong in specificity, high in sensitivity and strong in accuracy after verification.

The invention relates to a novel functional material for X-ray protection, in particular to a liquid metal flexible shielding material and a preparation method and application thereof. The material comprises liquid metal and solid metal, the liquid metal serves as a solvent to be filled in gaps of the solid metal, the liquid metal is gallium, gallium indium, gallium indium tin, gallium indium tin zinc or mercury, and the solid metal is selected from one or more of indium, tin, gold, platinum, iridium, zirconium, niobium, molybdenum, ruthenium, osmium, rhenium, rhodium, tungsten, antimony, palladium, tantalum, hafnium, lutetium, lead, ytterbium, thulium, bismuth, silver, erbium, holmium, dysprosium, terbium, gadolinium, samarium, neodymium, lanthanum, praseodymium, cerium and europium. On the basis of compounding of the liquid metal solvent and the solid metal solute based on the liquid metal combinatology, the liquid metal and the solid metal are jointly used for protecting X-ray radiation, the comprehensive performance of X-ray protection is improved, and meanwhile the variety and number range of selectable metal elements is widened.

The application discloses a rapid screening method for arsenic and mercury in algal powder based on terahertz time-domain spectroscopy and quantum microscopy, and relates to the field. The arsenic-specific quantum dot labeling probe is composed of a first quantum dot nanocrystal core and an arsenic-specific recognition group. The mercury-specific quantum dot labeling probe is composed of a second quantum dot nanocrystal core and a mercury-specific recognition group. The application adopts a dual-mode detection mechanism of quantum dot labeling to enhance terahertz fingerprint identification, discards traditional biological living body metabolic response detection modes and liquid-phase fluorescence detection modes, realizes directional combination of specific quantum dot probes and arsenic and mercury elements, forms a compound with characteristic terahertz vibration signals, greatly improves the detection sensitivity and specificity of heavy metal elements by terahertz technology, and realizes accurate differentiation and synchronous detection of the two target elements of arsenic and mercury.

The invention provides a method for comprehensively recovering selenium, tellurium, mercury, silver and lead from lead smelting acid mud, and belongs to the technical field of hazardous solid waste harmlessness and comprehensive resource recovery, and the method comprises the following steps: mixing the lead smelting acid mud, an activating agent and water, ball-milling and activating to obtain activated acid mud; carrying out low-acid oxidation leaching on the activated acid mud to obtain low-acid leaching liquid and low-acid leaching residues; carrying out high-acid oxidation leaching on the low-acid leaching residues to obtain high-acid leaching liquid; bismuth powder is added into the low-acid leaching liquid for tellurium enrichment reaction, and tellurium concentrate and tellurium enriched liquid are obtained; adding chlorine salt into the tellurium-enriched liquid, and reacting under a certain pH value to obtain bismuth oxychloride and bismuth-removed liquid; carrying out mercury enrichment on the bismuth removal liquid to obtain mercury-rich slag and mercury removal liquid; and adding a reducing agent into the mercury removal liquid to react to obtain crude selenium and reduced liquid. The method for comprehensively recovering selenium, tellurium, mercury, silver and lead from lead smelting acid mud provided by the invention is economical, efficient and environment-friendly, and can solve the problems that the acid mud containing elements such as selenium, tellurium, mercury, silver and lead is stockpiled, all valuable elements cannot be recovered, and the like.

The invention relates to the technical field of chemical analysis, in particular to a method for simultaneously detecting cadmium, tin, mercury, thallium and lead in a water sample, which adopts solid phase extraction-high performance liquid chromatography-inductively coupled plasma mass spectrometry to realize simultaneous enrichment and analysis of 13 forms of cadmium, tin, mercury, thallium and lead. The defect of low efficiency of single element sequence analysis is overcome; by optimizing online solid-phase extraction conditions and chromatographic separation parameters, the problems of high detection limit and insufficient sensitivity are solved, a feasible method is provided for simultaneous analysis of different forms of cadmium, tin, mercury, thallium and lead in the water sample, and the technical blank of simultaneous detection of forms of cadmium, tin, mercury, thallium and lead in the water sample is filled.

The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.

The invention discloses a gold ore prospecting prediction method based on the Hg-W ratio of pyrite, and the method comprises the steps: recognizing an internal annulus structure of pyrite through a scanning electron microscope back scattering electron imaging technology, and locking a growth edge annulus representing a main metallogenic period; performing in-situ trace element content testing on the edge girdle by adopting a laser ablation inductively coupled mass spectrometer to obtain mass concentrations of mercury and tungsten; calculating the mass concentration ratio R of mercury to tungsten in the edge annulus, and drawing an Hg-W logarithmic scatter diagram; the smaller the R value in the Hg-W logarithmic scatter diagram is, the closer the R value is to the root of the mineralization system, otherwise, the closer the R value is to the shallow part of the mineralization system. According to the method, the superimposed interference of multi-stage signals in the non-mineralization stage is effectively eliminated, and a quantitative discrimination index is established by using the geochemical differentiation law of Hg and W in fluid evolution. The method has the advantages of being high in spatial resolution, accurate in prospecting information, reliable in denudation degree evaluation and the like, and a scientific basis can be provided for accurate positioning of the deep concealed gold mine.

The application provides a method for simultaneously determining mercury and other elements in food by using inductively coupled plasma mass spectrometry. When the inductively coupled plasma mass spectrometry is used to determine mercury and other elements, instead of needing to "individually prepare a mercury standard working solution series" as stipulated in the first method of the national standard GB5009.268-2025 "Determination of multiple elements in food", a mercury stabilizing solution (2mL of gold element solution with a concentration of 1000mg / L is diluted to 1000mL by using a nitric acid solution (5+95), i.e., 5% nitric acid-2mg / L gold solution) is used to prepare a mixed standard solution series of other elements, such as lead, cadmium, arsenic and chromium, at the same time when the mercury standard solution series is prepared. The simultaneous determination of mercury and other elements (one-time processing, one-time detection) can be realized, and the content of mercury and other elements can be obtained at the same time, so that the detection efficiency is greatly improved, and the experimental cost is saved.

This invention relates to a method for capturing at least one heavy metal, preferably mercury, present in a hydrocarbon feedstock, the method comprising contacting the feedstock with at least: - a first capturing substance comprising, preferably, at least one of, at least partially in the form of M x S y A metal M existing in the form of a sulfide, M being selected from copper, molybdenum, tungsten, iron, nickel, cobalt, and zinc, preferably copper, iron, and zinc; preferably, M is copper; a second trapping material comprising, preferably consisting of: a porous support based on at least one refractory oxide, and at least one element at least partially composed of M. x S y The metal M exists in the form of a sulfide, and M is selected from copper, molybdenum, tungsten, iron, nickel, cobalt and zinc, preferably copper, molybdenum, nickel, cobalt and zinc; preferably, M is copper.