Zeeman mercury analyzer
RA-915+ | |
| The
whole laboratory at your hand! |
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- ULTRA LOW DETECTION LIMIT
- DIRECT MESUREMENTS WITHOUT PRELIMINARY MERCURY CONCENTRATION
ON SORBENTS
- HIGH SELECTIVITY OF ANALYSIS
- WIDE RANGE OF APPLICATIONS
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Mercury is among most abundant environmental pollutants which adversely
affects ecological systems and human beings. It shows high toxicity, mobility,
and ability of accumulation in trophic chains of water and continental
biocenosis. Therefore, it is recognized to be one of the most hazardous global
environmental pollutants.
Mercury penetrates into human organisms through breathing and with foodstuffs
contaminated by methylated mercury (primarily, with fish and other
seafoods).
Laboratories involved in environmental monitoring and safeguarding public
health care need means for rapid and reliable analysis of mercury contamination
in the environment and human beings.
Multifunctional portable mercury analyzer RA-915+ features a unique
capability of performing direct, fast, and precise measurements of mercury
concentration in various media.
RA-915+ is an atomic absorption spectrometer, which employs the effect of the
resonance radiation absorption by the mercury atoms.
- Proprietary scheme of the Zeeman correction for
non-selective absorption provides high measurement accuracy
irrespective of interfering factors, such as dust, aerosols, absorbing gases
and vapors.
- Multipath cell with an effective optical length of 10
m provides the highest measurement sensitivity.
2 ng/m3 Hg in the AIR
!
- Ultra low detection limit
- High selectivity of analysis
- Direct continuous mercury determination (without preliminary mercury
concentration on a sorbent)
- Capability of operation in the field using a built-in battery
- User-friendly computer interface
- Background monitoring of atmospheric air
- Direct analysis of complex gas mixtures
- On-line measurements
- Wide dynamic range of the direct measurements:
2 - 50 000 ng/m3 - with a multi-path cell
5 000 - 200
000 ng/m3 - with a single-path cell
- Measurements from moving objects
| Analytical characteristics
|
| Subject |
Detection limit |
Pumping rate |
Technique |
| Ambient air |
2 ng/m3 |
20 l/min |
Direct continuous measurements
with
a response time of 1 sec |
| Natural and other gases |
2 - 500 ng/m3 |
5 - 20
l/min | |
0.5 ng/l in WATER
- Measuring low mercury concentrations in potable and natural water
- Mercury concentration monitoring in sewage and drain water
- Mercury detection in blood, urine, and other liquids
Principle of operation - "Cold Vapor"
Technique
Reducing agent, SnCl2, is added to a sample, and the atomic
mercury thereby produced then enters the analytical cell.
| Analytical characteristics
|
| Subject |
Detection limit |
Sample volume |
Rate of analyses,
samples per
hour |
| Water |
0.5 ng/l |
20 ml |
15 |
| Urine |
5 ng/l |
1 ml |
15 |
| Blood |
0,5 µg/l |
0.2 ml |
15 | |
- Direct mercury assaying in complex-matrix samples without sample
preparation
- Visualization of mercury egress from a sample
Analysis is carried out using an RP-91C attachment. Mercury, which is present
in various chemical compounds, is sublimated and atomized in a two-stage
pyrolysis reactor.
To prepare for most of the measurements, a sample should be merely
weighed.
| Analytical characteristics
|
| Subject |
Detection limit |
Sample weight |
Rate of analyses,
samples per
hour |
| Oil and condensate |
50 µg/kg |
10 mg |
15 |
| Solid and sediments |
0.5 µg/kg |
200 mg |
15 |
| Tissues |
5 µg/kg |
10 mg |
15 |
| Hair |
20 µg/kg |
10 mg |
15 |
| Plants |
2 µg/kg |
50 mg |
15 |
| Foodstuffs |
2 - 10 µg/kg |
5 -50 mg |
15 | |
THE RA-915+ PORTABLE MERCURY ANALYZER SYSTEM ENABLES
COPING WITH ANY COMPLEX PROBLEMS INVOLVING DETERMINATION OF MERCURY IN NATURAL
MEDIA AND IN TECHNOLOGHICAL PROCESS
MONITORING.
Demercurization monitoring
- Search and localization of indoor and outdoor mercury contamination in
continuous air analysis mode, including those performed from moving vehicles
- Monitoring of a demercurization process involving any chemical reagents
- Quality assurance of the demercurization
- Mercury assaying in construction materials and surface
wash-outs
Handling the toxicology and occupational safety
problems
- Screening examination of population
- Proximate analysis of biological objects (urine, blood, hair, and exhaled
air)
- Finding out risk groups
- Instrumental monitoring of a mercury intoxication treatment and of the
following rehabilitation
Rapid-analysis of complex
objects
- Raw materials and industrial products
- Ecological and geochemical samples, biological objects, foodstuffs,
cosmetics, and medical preparations
- Combustible deposits (hydrocarbon gases, natural gas condensate, oil,
coal, peat, and shale oil)
Geological and geochemical
survey
- Study of mercury cycles of natural and technological origin
- Prospecting of mineral deposits
- Mercury assaying in
Natural
gases
Water
Rocks and
ores
Ecological survey
- Continuous mercury background monitoring in the atmosphere
- Various ecological surveys of mercury haloes of technological origin and
detection of emission sources
All functions of the instrument are
microprocessor controlled and activated via the hand-held detachable keypad and
by a local or remote computer.
| Specifications |
| |
Size, mm |
Weight, kg |
Power supply |
Power consumption, W |
Rate of analyses per hour |
Nonstop operating time, hours |
| RA-915+(air) |
460x210x110 |
7.5 |
220/110 V a.c., 50/60 Hz 10/14 V d.c. |
15 |
|
|
RP-91
"Cold Vapor" Attachment |
340x240x120 |
4 |
220/110 V a.c., 50/60 Hz 6 V d.c. |
15 |
12 - 15 |
8 |
RP-91C
Pyrolysis Attachment |
340x240x120 |
5.5 |
220/110 V a.c., 50/60 Hz |
250 |
6 - 8 |
8 | |
| Recommended complete delivery set
and options |
| |
Air |
Liquids |
Complex-matrix
samples |
| RA-915+
Analyzer |
* |
* |
* |
| RP-91
Attachment |
|
* |
|
| RP-91C
Attachment |
|
|
* |
| 1 - 5 ml
micropipette |
|
* |
|
| IBM-compatible PC with
Windows95/98 Software |
* |
* |
* |
| Installation &
Commissioning |
* |
* |
* |
|
Services
On customer's request our service engineers can carry out installation and
commissioning of the Lumex instruments at customer's site. Consultations and
initial training of attendance personnel are provided with due account of
customer's specific needs. Spare parts are delivered and repair is made
immediately upon customer's request (free within the warranty period).
Warranty
All of the Lumex equipment is covered by a 12-months warranty.
The RA-915+ mercury analyzer complies with EPA Methods 1631, 7470, and
7471 as well as with the OSHA and FDA requirements.
Appications for RA-915 Analyser
Download presentation (PDF format):
Mercury Determination with RA-915+ Analyser