HG-B hydride generator

HG-B hydride generatorIntroduction:
1. The injection method is continuous injection
2. Applicable to all atomic absorption systems both domestically and internationally
3. Equipped with automatic memory function (one click start)
4. HG standard solution 5ng absorption value>=0.055A
5. As standard solution 2ng absorption value>=0.055A
6.RSD<=2% (As 6ng 标液）
7. R (linear)>0.998%

HG-B hydride generatorLaboratory assembly 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.