DmA-1 Direct mercury Analyzer MILESTONE H E L P I N G w w w. m i l e s t o n e s r l . c o m C H E M I S T S 8 good reasons to choose the milestone DmA-1 1. no sample preparation 2. ease of use 3. lowest cost of analysis The DMA-1 does not require any Just weigh your sample, load it onto Ease of use, speed of analysis, sample preparation or other wet the instrument and press ‘start’. catalyst and amalgamator long chemistry prior the analysis. The DMA-1 is so simple to use that it lifetime, sample boats durability This means ease of use, low running can be operated in the fi eld, not only and the possibility of using air as cost and no need for hazardous in the analytical laboratory. combustion and carrier gas minimize chemicals to purchase, handle and the DMA-1 cost of analysis. dispose. ˆ1=1.2722 4. Best analytical performance Typical DMA-1 absorbance profi le. 5. Offi cial methods compliance The 1st peak is related to the Combining an innovative mercury more sensitive longer cell, while the 2nd peak corresponds The DMA-1 is compliant with the measuring system with a unique to the shorter cell. US EPA method 7473 (Mercury in optical path spectrophotometer, solids and solutions by thermal the DMA-1 achieves a detection decomposition, amalgamation, limit as low as 0,003 nanograms of W =4.10s 0.5 and atomic absorption mercury and is capable of measuring spectrophotometry), with ASTM up to 1.500 nanograms of mercury, method D-6722-01 (Total mercury in equivalent to a concentration of 15 coal and coal combustion residues) mg/kg (15 ppm) on a 100 mg sample ˆ2=0.1611 and ASTM method D-7623-10 (Total analysis. W =5.55s mercury in crude oil). 0.5 02 04 06 08 10 12 14 16 18 20 22 24 26 28 30 32 34 36 Time [s] 6. High productivity 7. easy maintenance 8. largest installed base The DMA-1 is incredibly fast. All the DMA-1 components, such as With over 1300 units installed in Sample weight is automatically the catalytic furnace, amalgamator 80 different Countries worldwide, transferred from the analytical and spectrophotometer, are easily Milestone is the acknowledged balance to the instrument, and a accessible for routine cleaning and market leader in direct mercury complete analysis -start to fi nish, maintenance. determination. takes just 5 minutes. Our extensive experience enables us to provide the highest level of application and service support. milestone DmA-1 How it works The Milestone DMA-1 is a direct mercury analyzer of solid, liquid, and gas samples. Analysis time is 5 minutes only and no sample preparation is required. The DMA-1 is based on the principles of sample thermal decomposition, mercury amalgamation and atomic absorption detection. The DMA-1 shares the same technology of the Milestone DMA-80, the most successful direct mercury analyzer in the market with over 1300 units installed in 80 different Countries worldwide. The sample is weighed into a quartz vial, and its weight automatically transferred from the analytical balance to the DMA-1. Sample vial is then loaded onto the instrument. Sample is dried and then thermally decomposed in an oxygen-rich stream. Mercury and other combustion products are released and fl own through the catalyst, where all interfering substances, such as halogens and nitrogen or sulfur oxides, are eliminated. Mercury is selectively trapped by gold amalgamation, while other combustion by products are fl ushed off. The amalgamation furnace is heated and mercury is rapidly released. Mercury is fi nally carried into multiple measuring cells positioned along the optical path of the spectrophotometer, and quantitatively measured by atomic absorption at 253,65 nm. DmA-1 user interface The DMA-1 is operated via a EasyCONTROL software includes the compact control terminal with easy-unique AutoBLANK feature. to-read, bright, full-color, touch If, following the analysis of a sample screen display or, alternatively, by a with a very high mercury content, Windows-based computer. the pre-set blank level is exceeded; The terminal is provided with multiple EasyCONTROL will automatically run USB and RS-232 ports for direct blank cycles until the pre-set blank printouts of methods and runs, and level is achieved. for interfacing the instrument to an external balance. EasyCONTROL allows the operator to designate certain samples as The terminal runs Milestone’s unique reference, or QC samples. EasyCONTROL software, providing Once a sample is designated as a simple and intuitive, but extremely reference, a known concentration fl exible and powerful control over the value is entered. analytical process. If the analysis of that sample yields a All sample parameters, including concentration outside the acceptable furnace temperatures, method range specifi ed by the operator, profi les, absorbance signals, results, EasyCONTROL can be pre-set to and calibrations are saved. either continue, stop, or pause the They can be viewed, easily analysis of the remaining samples. transferred using a USB memory stick or integrated to LIMS Laboratory EasyCONTROL software is fully Information Management Systems. compliant with FDA regulations 21 CFR Part 11. milestone DmA-1 analytical performance Accuracy Sample Certifi ed (μg/kg) DMA-1 (μg/kg) NIST 1568a Rice Flour 5,8 ± 0,5 5,9 ± 0,2 The DMA-1 produces accurate results over a wide dynamic range and on a BCR-277R Estuarine Sediment 128 ± 17 121 ± 2 variety of different matrices. DORM-4 Fish Protein 410 ± 55 375 ± 3 The results below refer to analyses on solid certifi ed reference materials NIST 2781 Domestic Sludge 3.640 ± 250 3.757 ± 88 with a mercury concentration ranging BCR EC 680k Polythene 4.640 ± 220 4.780 ± 94 from 5 μg/kg to nearly 5 mg/kg. sample matrix Precision 265 The DMA-1 produces matrix- The DMA-1 provides reproducible 250 independent results. results over a broad range of samples, The instrument is calibrated using such as polymers, food and feed, 235 aqueous standards and then analyzes and oils, for instance. 220 organic and inorganic solid samples. 205 Just one method is used to analyze Crude Oil Hg concentration a variety of different matrices making 190 average=22,15 the DMA-1 extremely easy to use. 175 sd=0,53 RSD=2,4% 1 2 3 4 5 6 Run sample amount stability 1,6 Up to 1,5 grams of solid or 1,5 mL of The instrument calibration lasts for liquids can be analyzed. months of operation, and the results This is particularly important for the 1,2 are stable over time. analysis of heterogeneous materials or for samples with a very low 0,8 mercury concentration. The graphic shows results obtained Hg concentration on NIST 2709 (San Joaquin Soil), 0,4 a certifi ed reference material with known mercury content of 1.32- 1.48 mg/kg. 0,1 0,5 1,0 1,5 Run memory effect ˆ1=1.1273 The graphic shows the The DMA-1 does not virtually suffer absorbance peak for a 1-mg/kg mercury solution from any memory effect. and the subsequent The instrument software features the profi le of blank run. ‘Autoblank’ function, by which the user preset a satisfactory blank level. W =5.15s 0.5 If that level is exceed the instrument automatically runs blank cycles until the expected level is reached. This is important when analyzing a series of unknown samples. ˆ2=0.0758 ˆ1=0.0021 W =8.75s 0.5 W =3.60s 0.5 Gas analysis sorbent traps MILESTONE Milestone Sorbent Traps expand the capabilities of the DMA-1, H E L P I N G enabling the measurement of mercury in gases. C H E M I S T S Simply sample the gas, through a dedicated mass fl ow controller, using the Sorbent Traps, and load them onto the DMA-1. Total mercury (elemental and oxidized forms) is quantitatively UNI EN ISO 9001: 2008 CERTIFIED measured in 5 minutes. MILESTONE Srl Sorbent Traps are reusable and extremely easy to operate. Via Fatebenefratelli, 1/5 - 24010 Sorisole (BG) - Italy Tel: +39 035 573857 - Fax: +39 035 575498 www.milestonesrl.com - email: analytical@milestonesrl.com MILESTONE INC. 25 Controls Drive - Shelton, CT 06484 - USA Tel: (203) 925-4240 - Toll-free: (866) 995-5100 - Fax: (203) 925-4241 www.milestonesci.com - email: mwave@milestonesci.com MILESTONE GENERAL K.K. KSP, 3-2-1, Sakado - Takatsu-Ku, Kawasaki 213-0012 - Japan Tel: +81 (0)44 850 3811 - Fax: +81 (0)44 819 3036 www.milestone-general.com - email: info@milestone-general.com MLS GmbH Auenweg 37 D-88299 Leutkirch im Allgau - Germany Tel: +49 (0)7561 9818-0 - Fax: +49 (0)7561 9818-12 www.mls-mikrowellen.de - email: mws@mls-mikrowellen.de In Your Country: T344EN-001CA