G01N33/0045

System for analyzing mercury
09885696 · 2018-02-06 ·

An analyzer system (10) for measuring the mercury content of samples includes a mercury vapor analyzer (12) for generating and detecting analytical beams. A furnace (24) is mounted to a measurement cell (22). A sample boat (30) containing a sample is adapted to be disposed within the furnace to release heated sample effluent gas from the sample into the measurement cell. An optical bench (16) mounted to the mercury vapor analyzer (12) into which the measurement cell (22) is positioned in a path traveled by the analytical beams projected out of the vapor analyzer whereby the analytical beams traverse the measurement cell, interact with the sample effluent gas and return back to the vapor analyzer (12) where the amount of mercury in the heated sample effluent gas can be determined. A pump station (56) to draw the sample effluent gas from the measurement cell.

Method for ion detection
09857340 · 2018-01-02 ·

A method and apparatus for detecting mercury in air includes passing a substantial quantity of air through a concentrator column containing gold film whereby a gold-mercury amalgam is formed, purging the concentrator column with nitrogen gas for a predefined period of time to remove oxygen and other organics from the concentrator column, quickly heating the concentrator column to a substantial temperature to decompose the gold-mercury amalgam forming mercury gas, and injecting the mercury gas into a photoionization detector system. The apparatus includes a quartz housing having a quartz body defining an internal volume, a gas inlet, a gas outlet, and a heater end, and a concentrator element sealingly disposed within the quartz housing, the concentrator element having a first element portion and a second element portion, a film of gold deposited on at least a first element portion disposed in the quartz body.

Systems and methods for chemically testing a sample and sampling probes therefor
09658144 · 2017-05-23 · ·

Systems, methods, and sampling probes for chemically testing a liquid sample are provided. In accordance with one embodiment of the present disclosure, a system generally includes a sample container for containing a liquid, wherein the liquid includes a chemical compound of interest and a reducing agent, and a non-corrosive sampling probe comprising a first channel for delivering a flow of gas to the liquid sample, and a second channel for purging sample fluid from the sample container, wherein at least a portion of the sampling probe is in contact with the liquid.

Semiconductor low-temperature elemental mercury generator

A semiconductor low-temperature elemental mercury generator is provided, and includes a gas source and a mercury pool generating chamber, the gas source is communicated with a carrier gas pipeline and a dilution gas pipeline. The mercury pool generating chamber includes a semiconductor refrigeration device, a gas mixing device and a coil, the coil is kept at a constant temperature through the semiconductor refrigeration device, the carrier gas pipeline is communicated with the coil, and the gas mixing device is communicated with a gas outlet of the coil and the dilution gas pipeline. The semiconductor low-temperature elemental mercury generator has the advantages of simple operation and accurate mercury standard gas concentration.