The particle trapping device according to the present invention comprises: a lead-in channel; a flattened channel disposed on the downstream side of the lead-in channel; a rectangular channel disposed on the downstream side of the flattened channel; and a particle pit trap disposed at least on a first inner wall face of the rectangular channel, wherein the lead-in channel has a channel cross-section larger than a channel cross-section of the flattened channel; the flattened channel has a flat channel cross-section whose the width is longer than its height; the rectangular channel has a rectangular channel cross-section, and is provided with the first inner wall face, a second inner wall face opposed to the first inner wall face, a third inner wall face, and a fourth inner wall face opposed to the third inner wall face; and the lead-in channel, the flattened channel, the rectangular channel, and the particle pit trap are characterized by being configured in such a way that a portion of liquid containing target particles and flowing through the lead-in channel flows into the flattened channel; the target particles contained in the liquid that had flowed through the flattened channel flow into the rectangular channel; and the target particle that had flowed through the rectangular channel enters into the particle pit trap and is trapped therein.

Methods, apparatus, and systems are provided for detecting and removing microplastics from wastewater effluent. Both, automatic/remote and manual monitoring and sampling components are included to detect the presence of microplastics. The automatic monitoring and sampling component includes a TSS sensor and associated apparatus calibrated to account for non-plastic solids present in the wastewater and, thereby, more accurately determine the presence of microplastics. Efficient separation and removal of microplastics from wastewater effluent is performed by a specialized capture net apparatus having multiple sized mesh components and optional diffuser devices which perform size exclusion filtration of microplastics from the water. In an exemplary embodiment, the methods generally include diverting treated wastewater effluent from a wastewater treatment facility's main line into a wastewater sampling mechanism via an intake pipe, and then into a solids monitoring and separation mechanism which includes the specialized capture net apparatus.

Analysis device for detecting solid particles in suspension in a lubricant, the analysis device comprising one or more ferromagnetic solid particle sensors, one or more other sensors able to detect non-ferromagnetic solid particles, and one or more magnets. The ferromagnetic solid particle sensors are offset in a direction perpendicular to a main direction of flow of the lubricant in relation to the other sensors, and the magnets are arranged so as to attract ferromagnetic solid particles towards the sensors of ferromagnetic solid particles by drawing them away from the other sensors.

An apparatus having: a vessel for containing a suspension of a liquid and solid particles; a tube having a narrowed portion to draw the suspension from the vessel into the tube when a gas flows through the tube; an aerosol generator coupled to the tube for forming an aerosol from the suspension; a dehydrator coupled to the aerosol generator for removing the liquid from the aerosol forming a dried aerosol; a multiple-pass spectroscopic absorption cell coupled to the dehydrator to pass the dried aerosol into the absorption cell; and a Fourier transform spectrometer coupled to the absorption cell to measure an absorption spectrum of the dried aerosol.

An automated, fieldable ion-selective sensor system for frequent detection of nutrients in soils or water is set forth. In one aspect, an integrated small form-factor housing includes a battery, processor, a fluid manipulation unit and reservoirs, and a chemical species detection cell. A flow-through sampling head can be connected to the detection cell and a waste reservoir by flexible tubing sealingly connected at opposite ends of the tube. In one aspect, improved performance of the ion-selective sensor includes adding an ion-to-electron transfer interlayer between an ion-selective membrane and its working electrode. In one aspect, the sensor is solid-state and uses printed polymeric composite of POT-MoS.sub.2. The use of a porous tube for a sampling head and fluid connection at opposite ends allows not only fluid to be removed from the head to the detection cell for measurement but also flow in an opposite direction and out to a waste reservoir to clean and reset for a next sample measurement.

The present invention is directed to a filter assembly for capturing environmental DNA (eDNA), a kit comprising the filter assembly, a method of capturing eDNA using the filter assembly, a method of analysing eDNA captured in the filter assembly, and a method of providing biodiversity data by analysing eDNA collected in the filter assembly.

Methods and systems are provided for treating the tail gas stream of a sulfur recovery plant. The methods including generating a tail gas stream from a sulfur recovery plant, treating the tail gas stream with a hydrogen sulfide absorption unit and a hydrogen selective membrane unit, generating a stream low in hydrogen sulfide and a stream rich in hydrogen. The hydrogen sulfide rich stream is recycled to the sulfur recovery unit. The hydrogen selective membrane unit includes a glassy polymer membrane selective for hydrogen over hydrogen sulfide and carbon dioxide.

An automatic sampling device (autosampler) is provided for continuous water sample collection and visual inspection for the presence of particulate solids in water sources. The autosampler is capable of collecting larger water samples, over a longer period of time, than typical inline monitoring and sampling methods. This provides more accurate information regarding the presence and concentration of particulate solids in the water sample as compared to most inline methods. More particularly, the autosampler includes a plurality of plastic pellet and powder capture nets (P3CNs), each of which is designed with nested nets for catching and retaining particulate solids of sequentially diminishing particle size along the flow path of the water sample. This enables easy determination of the presence of particulate solids, as well as a quick assessment of the different sizes of particulate solids present in the water samples by visual inspection of the P3CNs.

The invention discloses a measurement apparatus for measuring a volume of a desired solid component in a sample volume of a solid-liquid slurry. The sample volume of the slurry is received into a receptacle and screened to separate out the desired solid component from a remainder of the slurry, whereby the solid component is retained in the receptacle to form a bed therein and the remainder is exhausted. The height of the bed is subsequently measured by a laser being adapted to emit a laser beam into the receptacle, thereby enabling a determination of a volume and/or mass of the solid component retained in the receptacle. The invention further discloses a control system for a leaching plant utilising the measurement apparatus.

To provide a technology for obtaining a desired particle. The present technology provides a particle obtaining method including a particle capturing step of capturing a particle in a well, a sealing step of sealing the well with a sheet, and a particle obtaining step of obtaining the particle from a selected well after the sealing step. Furthermore, the present technology also provides a particle capturing chamber provided with a particle capturing unit including at least one well for capturing a particle therein, and a sealing unit including a sheet for sealing the well, in which a distance between the well and the sheet is adjustable.