HG-B dual pump hydride generator

HG-B dual pump hydride generatorFeatures:

1. Adopting dual peristaltic pump technology, the inlet flow rate can be flexibly set.
2. Prepare a new gas-liquid separator to automatically remove waste liquid.
3. Optimize gas path control, limit baseline noise suppression, and improve signal-to-noise ratio.
4. * Atomic speaker with automatic temperature setting and excellent temperature control accuracy.
5. Controllable continuous injection, suitable for any atomic absorption instrument detection.

HG-B dual pump hydride generatorLaboratory equipment conditions:
The laboratory should be equipped with exhaust equipment, and the size of the exhaust volume should be able to gently suck up a slightly larger newspaper attached to the exhaust outlet. Excessive air volume can affect the stability of flames; The air volume is too small and unstable, and harmful gases cannot be discharged.
The test bench is sturdy and stable, with a flat surface. The space left around the test bench should not be less than 0.5 meters for operation and maintenance.
Gas source preparation conditions: When using flame method, acetylene steel cylinders are required, with a purity greater than 98% and an outlet pressure of 0.08MPa. Acetylene gas cylinders should not be placed in the main engine room, but should be placed in a safe and smoke-free room closest to the main engine. However, the main engine room must be equipped with a gas circuit switch valve to quickly cut off the gas in case of an accident.

Working Principle:
Some elements in aqueous solution, such as As, Se, Sn, or Bi, are mixed with HCl and NaBH4 solvents through a peristaltic pump and sent into a reaction loop to generate hydrides.
The generated mixture consists of hydrides, hydrogen gas, water vapor, and residual reagents, which are sent to a gas-liquid separator through a carrier gas. In the gas-liquid separator, the separated gas phase is sent into a quartz tube through a carrier gas. Heating a T-shaped quartz tube with acetylene combustion to thermally decompose hydrides. In the presence of a reducing agent, inorganic mercury in aqueous solution vaporizes into free mercury vapor, so mercury vapor does not need to be heated in a T-shaped quartz tube.