Transcript Mercury Monitoring in Air

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Ultra-trace Mercury
Monitoring in Air
Company History
 Founded in 1989 to develop custom
instrumentation for environmental analysis
 Developed first mercury product in 1993
 Have since become world leaders in this
growing market
 Products sold in more than 30 countries
ekran Inc.
Why Measure Parts Per
Quadrillion of Mercury ?
 Mercury is one of the most potent neuro-
toxins known
 Bio-accumulates up the food chain by
factors of greater than 10,000,000
 Levels are increasing worldwide
 Long life in the atmosphere means that
mercury emissions are of global concern
ekran Inc.
Sources of Mercury
 Mining & smelting (gold)
 Waste incinerators
 Battery manufacturing
 Fluorescent lamps (manufacturing &
disposal)
 Chlor-alkali plants (pulp & paper)
 Coal fired power plants
ekran Inc.
Client Base
 Governments (environmental monitoring)
 Universities & research institutions
 Mercury polluters
 Commercial analytical laboratories
 Power generation utilities
ekran Inc.
Before Tekran Model 2537A
 Traditional methods of atmospheric
monitoring required manual sampling for
long periods. (hours or days)
 Subsequent analysis usually performed in
a clean room environment
ekran Inc.
Manual Ambient Air Sampling
MFC
Particulate
Filter
man_air.dsf
ekran Inc.
Primary
Cartridge
Backup
Cartridge
Gold coated quartz sand or beads
Mass
Flow
Controller
Note: Sampling cartridges heated to 100 ºC
Pump
Manual Cartridge Analysis
Cartridge B
Injection Port
LOAD
VALVE
Vent
Cartridge A
Analytical
Cartridge
Field Cartridge Soda Lime
Scrubber
Heater-B
V2
4-way
DETECTOR
Vent
V1
3-way
Fan-A
Fan-B
MFC
Desorption Flow Set
(Ball Flowmeter)
Heater-A
VENT
VALVE
UHP Argon
Detector Carrier Flow Set
(Mass Flow Controller)
Argon or Nitrogen
Rev 2.0
ekran Inc.
GasdedR2.dsf
Model 2537A Analyzer
ekran Inc.
Model 2537A Mercury Analyzer
 Provides continuous TGM readings with
update rate as low as 2.5 minutes
 Detection limit < 0.1 ng/m3 ( 12 ppq )
 Automatic recalibration with internal
permeation source
 Capable of unattended operation for
extended periods
ekran Inc.
Flow Diagram of Model 2537A
ekran Inc.
Chlor-Alkali Plant - USA
 Plot of wind vs
ambient mercury
values
 Two months of
continuous
monitoring
 Plant is located 18
miles distant
 Fish consumption
advisories in effect
ekran Inc.
Concentrations
in ng/m3
Chlor-Alkali Plant
N
located bearing 60º
distance 18 miles
6
4
2
W
E
0
WIND
DIRECTION
Plot Duration: 60 days
Data Interval: 15 min
S
vs.
MERCURY
Depletions of Mercury in the Arctic
ekran Inc.
Companion Products
 Model 1100 - Zero Air Generator
 Eliminates need for separate zero air source
 Model 1110 - Two Port Sampler
 Mercury flux measurement
 Model 1120 - Standard Addition Unit
 QA/QC tool
ekran Inc.
Companion Products
 Model 1130 – Reactive Gaseous Mercury
 RGM speciation unit differentiates between
ionic (Hg2+) and elemental (Hg0) forms
 Model 1135 – Particulate Mercury
 Monitors fine fraction (<2.5 um) particulate
bound mercury
 Detection limits of each unit: <2 pg/m3
ekran Inc.
Mercury Monitoring in the Field
Barrow, Alaska
Neumeyer Station, Antarctica
Tekran analyzers are used routinely in
some of the harshest locations on earth.
 The equipment has demonstrated its
ruggedness and reliability in countless
applications.

Florida Everglades