Method 30B Mercury Sorbent Traps

The purpose of Method 30B sorbent traps is to measure total vapor phase mercury (Hg) emissions from coal fired sources. Knowledge of Methods 1, 4, and 5 is recommended. The testing should be done after the stack gas has passed through all pollution control devices, i.e. with a stream that is low in particulates. Method 30B is used to test the accuracy of current vapor phase Hg constant emissions monitoring systems (CEMS) and can also be used to test for the compliance of mercury emissions standards. The method requires a minimum of two simultaneous sampling trains.

RATA Short-Term Traps for 30B Console

These Traps are used in the 30B Console during the RATA.

Part Number	Description	Size OD x L	Sections	Sorbent per Section	Color of End-Caps	Spike (ng)
226-239	Unspiked Extra Durable Glass Activated Iodinated Carbon Individual ID	10 x 240 mm 6 x 240 mm	2	300 mg	Yellow	None
226-234	Vapor-spiked Extra Durable Glass Activated Iodinated Carbon Individual ID Spiked with Mercury for QAQC per Method	10 x 240 mm 6 x 240 mm	2	300 mg	Blue Yellow	20
226-235						50
226-236						100
226-237						150
226-238						200
	Custom Spiking Available

RATA Short-Term Traps for 30B Console for Low Mass Emitters (LME)

These Traps are used in the 30B Console during the RATA. These traps are used for sources with very low levels of mercury where the RATA must be done at 3-4 liters p/min flow.

Part Number	Description	Size OD x L	Sections	Sorbent per Section	Color of End-Caps	Spike (ng)
226-239LME	Unspiked Extra Durable Glass Activated Iodinated Carbon Individual ID	10 x 240 mm 6 x 240 mm	2	300 mg	Yellow Gray	None
226-234LME	Vapor-spiked Extra Durable Glass Activated Iodinated Carbon Individual ID Spiked with Mercury for QAQC per Method Specially packed for High Flow (3-4 LPM) & Zero Hg Background Carbon	10 x 240 mm 6 x 240 mm	2	300 mg	Blue Gray	20
226-235LME						50
226-236LME						100
226-237LME						150
226-238LME						200
	Custom Spiking Available

Customizations for the 30B Sorbent Traps for Special Stack Conditions

Part Number	Description	Size OD x L	Sections	Sorbent per Section	Color of End-Caps	Spike (ng)
AGS	Acid Gas Scrubber- A section placed before the first Sorbent bed. This section is analyzed like a plug and added to the first section.	N/A	N/A	N/A	Green	None
	This option is used at sources with high Acid Gases in the flue gas. When you see breakthrough or spike loss on the traps, it is worthwhile to try this added section.
MR	Moisture Resistant – Any trap can be made with a special extra long glass. In wet sources, the extra length of the glass allows for more space for the moisture to evaporate before it hits the sorbent beds. This way the sorbent remains dry.	10 x 300 mm 6 x 240 mm	N/A	N/A	N/A	None
	This option is necessary for stacks that have very high levels of moisture and the client is afraid of direct moisture entrainment wetting the sorbent beds.
CP	Coiled Prefilter – Any trap can be made with a coiled prefilter placed inside of the trap before the first plug. The prefilter increases the surface area of the front plug and allows the particulate to evenly distribute itself along the prefilter instead of plugging up the first plug.	N/A	N/A	N/A	White	None
	This option is necessary for stacks that have very high levels of particulate which plug up the trap after a few days. For sources with high particulate this allows the client to go from just a few days before the traps plug up to 6-7 days.

Method 30B Sorbent Trap Specifications

• 10 mm or 6 mm x 185 mm tube
• Extra thick glass (More durable for the field)
• Larger internal diameter (Less blockage in trap)
• High flow rate – up to 2 Liters/min
• Can be used in wet and dry stacks
• Sorbent traps serialized with high temperature ink
• Easy-off cap plugs- easy leak testing
• Tapered glass for easy and safe use
• Protective packaging
• Method 30B Train Layout
• Necessary equipment for performing Method 30B
• Unable to ship outside of the United States of America
• For more information about CleanAir’s Mercury team click here