DMA-80L TECHNICAL SPECIFICATIONS

Transcription

1 DMA-80L Advantages Determination of Mercury in water and digestates Unique atomic absorption spectrometer, optical paths with three independent signals Short analysis time, typically less than 2 minutes Wide working range from 0,01 ng up to ng of Mercury Full automation Built-in 36-position auto-sampler All parameters under control during the analysis Quality Assurance protocols Compliant to FDA 21 CFR Part 11

2 DMA-80L TECHNICAL SPECIFICATIONS DMA-80L - 00/09/07 Principle Cold Vapour Atomic Absorption Spectroscopy Typical analysis time 2 minutes Light source Dual low pressure mercury lamp Calibration With standard reference solutions or materials Detectors Silicon, UV photo-detectors Sample type Liquids (aqueous) Optical Cells Triple AA-cuvette Typical reproducibility Below 1,5% with Hg ranging from 2 to 20 ng User interface Terminal Touch-screen Pump Precise peristaltic pump 0,2 ml/sec - Screen size 6,5 - Resolution VGA 640x480 Auto-sampler Sample volume Built-in, with 36 positions for 50 ml vials 2-50 ml Terminal Touch-screen - Screen size 12 - Resolution VGA 800x600 Reduction agent Nitrogen (gas) Power supply Tin-II-chloride l/h V/50-60Hz Detection limit 0,1 ppt Hg Dimensions 67 x 50 x 50 (h) cm Working range 0,01 ng Hg up to ng (with 5 ml) Weight 38 Kg (with Terminal 640), 41 Kg (with Terminal 1640) STANDARD METHODS COMPLIANCE: EN 1483, EN 12338, EN13806, ISO 16772, EPA 245.1, EPA 245.5, EPA 7470, EPA 7471 UNI EN ISO 9001:2000 CERTIFIED MILESTONE srl Via Fatebenefratelli, 1/ Sorisole (BG) - Italy Tel: Fax: analytical@milestonesrl.com MLS GmbH Auenweg 37 D Leutkirch im Allgau - Germany Tel: +49 (0) Fax: +49 (0) mws@mls-mikrowellen.de MILESTONE INC. 25 Controls Drive Shelton, CT USA Tel: (203) Toll-free: (866) Fax: (203) mwave@milestonesci.com MILESTONE GENERAL K.K. KSP, 3-2-1, Sakado Takatsu-Ku, Kawasaki Japan Tel: +81 (0) Fax: +81 (0) info@milestone-general.com

3 ALWAYS ONE STEP AHEAD DMA-80L DIRECT MERCURY ANALYZER FOR LIQUIDS

4 DMA-80L The new Milestone DMA-80L is designed to perform fast, precise and extremely sensitive determination of Mercury from 0,01 to ng in water-based samples and digestates. With water samples, a detection limit of 0, 1 ppt can be achieved! The DMA-80L incorporates an atomic absorption spectrometer which is an absolute novelty, as it delivers three Mercury signals at different sensitivity for each analysis. This covers an extremely wide working range, up to 6 orders of magnitude! DIRECT MERCURY ANALYZER FOR LIQUIDS The large dynamic measuring range allows the determination of Mercury in a very wide span of samples, from water to acidic solution resulting from the digestion of solids with high Mercury content. Typical samples for the DMA-80L are: drinking water, surface water, ground water and digestates of grains, fish, meat, baby food, sediments, soil etc. The entire working process, including chemical conversion of the solution, formation of atomic mercury as cold vapor, enrichment by selective amalgamation and final atomization with multiple signal collection and evaluation, lasts less than 2 minutes!

5 A continuous carrier gas-flow ensures an accurate Hg determination and minimizer memory effects. The DMA-80L is operated through a dedicated controller, the terminal 640 (6,5 wide) or the terminal 1640 (12 wide), both of them touch-screen. The newly developed self-explanatory software allows for complete documentation and fully complies with the FDA CFR 21 Part 11. A built-in 36-position auto-sampler assures an high degree of automation and an elevated sample throughput.

6 WIDE MEASURING RANGE DMA-80L CALIBRATION Absorbance profile printout. Notice the three absorbance peaks. Cell 0 typical calibration curve By fast amalgam heating, Mercury is quickly released and transported by the carrier gas into the three absorption measuring cells. The first cell detects Mercury with the highest sensitivity and it is therefore suitable for low concentration. The second cell is for medium concentrations and the third one for elevated mercury concentrations. Depending on the Mercury content of the solution, the software automatically choose the appropriate measuring cell. The calibration of the DMA-80L is carried out by measuring certified standards. The instrument automatically select the optimal calibration curve, corresponding to the measuring cell of the atomic absorption spectrometer. A separate calibration curve, up to 10 ng of Mercury, is used for extremely low concentrations. The conversion from Mercury absolute quantity to concentration is automatically done by the software.