LUMEX RA-915⁺  ZEEMAN  MERCURY  ANALYSER

The advanced RA-915+ mercury analyzer is a unique all-purpose high sensitivity analytical instrument for the environmental monitoring, especially for the real time detection of mercury vapor in air, mercury detection in water, natural and stack gases, oil and condensate, solid and sediments, foodstuff and so on.

 ULTRA LOW DETECTION LIMIT

 DIRECT ANALYSIS WITHOUT PRELIMINARY MERCURY CONCENTRATION ON SORBENTS

 HIGH SELECTIVITY OF ANALYSIS

 WIDE RANGE OF APPLICATIONS

Mercury is the most abundant environmental pollutant 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. 
The Multifunctional portable mercury analyzer RA-915+ features a unique capability of performing direct, fast, and precise measurements of mercury vapor and mercury concentration in various media.

MEASUREMENT PRINCIPLE

The 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.

RA-915+ ADVANTAGES

2 ng/m3 Hg in the AIR !

 Ultra low detection limit

 High selectivity of analysis

 Direct mercury detection (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 mercury vapor

 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

 Data logging

Analytical characteristics

(*) Continuously, response time 1 sec.
(**) Continuously, response time 10 sec.

0.2 ng/l in WATER

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

(***) Analysis time 40-80 sec.  

0.5 µg/kg in SOIL AND SEDIMENTS

• Direct mercury assaying in complex-matrix samples without sample preparation
• Visualization of mercury egress from a sample

Principle of operation

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 Sampling Analysis technique Solid samples (solids, rocks) 0.5 µg/kg 10-200 mg Direct Pyrolysis(***) Biological samples (tissues, liver, etc.) 5 µg/kg 10-50 mg Hair 10 µg/kg 10 - 20 mg Oil and oil products 50 µg/kg 10 - 50 mg Plants 2 µg/kg 10 - 50 mg Foodstuff 2 - 10 µg/kg 5 – 50 mg

(***) Analysis time 40-80 sec.

 THE RA-915+ PORTABLE MERCURY ANALYZER SYSTEM ENABLES COPING WITH ANY COMPLEX PROBLEMS INVOLVING MERCURY DETECTION IN NATURAL MEDIA AND IN TECHNOLOGICAL PROCESS MONITORING.

 
Demercurization monitoring

1. Search and localization of indoor and outdoor mercury contamination in continuous air analysis mode, including those performed from moving vehicles
2. Monitoring of a demercurization process involving any chemical reagents
3. Quality assurance of the demercurization
4. Mercury assaying in construction materials and surface wash-outs

Handling the toxicology and occupational safety problems

1. Screening examination of population
2. Proximate analysis of biological objects (urine, blood, hair, and exhaled air)
3. Finding out risk groups
4. Instrumental monitoring of a mercury intoxication treatment and of the following rehabilitation

Rapid-analysis of complex objects

1. Raw materials and industrial products
2. Ecological and geochemical samples, biological objects, foodstuffs, cosmetics, and medical preparations
3. Combustible deposits (hydrocarbon gases, natural gas condensate, oil, coal, peat, and shale oil)

Geological and geochemical survey

1. Study of mercury cycles of natural and technological origin
2. Prospecting of mineral deposits
3. Mercury assaying in

Natural gases
Water
Rocks and ores

Ecological survey

1. Continuous background mercury vapor monitoring in the atmosphere
2. 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 kg Power supply Watts analyses/hour optime, hrs. RA-915+(air) 460x210x110 7.5 240/100 V a.c., 50/60 Hz 10/14 V d.c. 15     RP-91 "Cold Vapor" Attachment 340x240x120 4 240/100 V a.c., 50/60 Hz 15 12 – 15 8 RP-91C Pyrolysis Attachment 340x240x120 5.5 240/100 V a.c., 50/60 Hz 250 6 – 8 8

Equipment and options


RA-915+ portable Zeeman mercury analyser with RP-915P software
RA-915+DL portable Zeeman mercury analyser with Data Logger and RP-915DL software
RP-91 attachment for liquid samples
RP-91C attachment for solid samples
For software installation a PC is necessary. Minimal system requirements: Windows®-95/98, Pentium 120 MHz, 20 Mb RAM, Serial COM port.


Services 


On customer’s request Spectronic Analytical's 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.

 

The following brochures are now available in PDF format:

RA 915+ Mercury Analyser and RP-91 / RP-91C Accessories

RA 915+ Mercury Analyser and PYRO-915 Accessory

To view a PDF file you will need the Adobe Acrobat Reader.
If you do not have this installed on your computer, please use the free download service.



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