What is SGM-Series?
In the United Nation Environment Programme Global Mercury Assessment Report 2018, artisanal gold mining (ASGM) may be reported as the largest source of mercury emission to the environment, but the combined emissions of stationary combustions coming from coal-fired boilers, cement productions, and non-ferrous metal smelting, easily surpassed those of ASGM. When the mercury from these stationary combustion sources is released into the environment, it methylates with bacteria in the water and bioaccumulates in fishes and shellfish. Ultimately, entering the human food chain. As in the Minamata Convention Treaty, the main objective is to protect human health and the environment from the adverse effects of mercury. Therefore, it is crucial to regulate and monitor these anthropogenic emissions to the atmosphere.
SGM-Series is a mercury monitor from NIC which is designed for field use to measure and monitor gaseous mercury in flue gases at the chimney (stack).
- Use for On-Site Measurement
- Ease of Setup and Operation
- Detect Mercury in Real-Time
Operating Principle At a Glance
A continuous stream of stack gas is drawn through a dust filter and heated transfer line to feed into SGM-9.
Stack gas is bubbled into SnCl2 solution where ionic mercury is readily reduced into elemental mercury.
Real-Time Acid Gas Removal
The reduced gaseous elemental mercury is next scrubbed in KOH solution to remove off any acidic gases (SOx, NOx).
Real-Time Acid Dehumidifier
The gaseous elemental mercury gas stream is last dehumidified by electronic chilling.
Continuous stream of mercury vapor is transported into the optical path of CVAAS for measurement.