MILESTONE H E L P I N G C H E M I S T S ACHIEVING LOWER DETECTION LIMITS IN TRACE METALS ANALYSIS Clean Chemistry Line Clean Chemistry Tools for Atomic Spectroscopy IMPROVING DETECTION LIMITS 90% COST SAVINGS WITH LOWER ANALYTICAL BLANKS The increasing demand for lower detection limits is a major challenge for any laboratory performing trace metal analysis. With the evolution of modern analytical techniques and improvements in quantification limits, it is necessary to control all SUPERIOR CLEANING EFFICIENCY the factors that can critically impact data quality: • The purity of the reagents. • The cleanliness of the material in contact with samples and solutions. • The sample preparation method. Acid Purification Systems HIGHER PRODUCTIVITY duoPUR Quartz Acid Purification System subCLEAN PTFE Acid Purification System Acid Steam Cleaning GREAT RETURN ON INVESTMENT traceCLEAN Automated Acid Steam Cleaning System AUTOMATED AND SAFE THE ANALYTICAL BLANK The reagent quality, the cleaning efficiency, as well as the integrity of the digested solutions all have a direct impact on the analytical blank. To address these challenges, Milestone developed a line of Clean Chemistry products, aimed at reducing and controlling the analytical blank, to complement our microwave digestion product line. LOWERING COSTS IN TRACE METALS ANALYSIS WITH SUB-BOILING TECHNOLOGY Sub-boiling distillation has demonstrated to be the best method and the most cost-effective approach in acid purification. Unlike conventional distillation, sub-boiling distillation prevents the formation of spray or droplets and yields very high purity acid. Through daily use of purchased acids, the activities of the analyst can affect the purity. On-demand sub-boiling distillation can supply fresh, pure acid and eliminate this common risk. Milestone applied sub-boiling distillation technology in the duoPUR and SubCLEAN. The duoPUR has two quartz purification units and allows the purification of the most common acids such as HNO and HCl, while the SubCLEAN 3 has a single PTFE-TFM purification still, allowing the purification of HNO , HCl and HF too. 3 GREAT RETURN ON INVESTMENT Element Single distillation Double distillation In trace metals analysis you often need to use expensive Ag <46 <1,5 high-purity acids. Applying sub-boiling technology, the cost of reagents can be reduced up to 90%, efficiently Al <557 <147 purifying reagent grade acids to provide ultrapure acids at the desired quality. As <3 <0,9 Ba <25 <3,5 2-X PURIFICATION CAPACITY Ca <900 <157 The duoPUR provides double distillation capacity for one reagent or simultaneous purification of two Cd <8,1 <1,8 different reagents. This is made possible with two Co <6 <1 quartz distillation units, each equipped with two infared heating elements. The water cooling allows fast Cr <118 <4,6 condensation of the ultrapure acid into the collection bottle. With the duoPUR you can reliably produce up Cu <58 <21 to 400 mL of ultrapure acid per hour. Fe <1.000 <210 Mg <195 <42 AUTOMATIC & SAFE Simply select a stored method and press “START” on Mn <9,7 <2,1 the touch screen terminal, to begin the sub-boiling Mo <7,1 <0,4 purification process. Safety and ease of use are ensured by the automatic loading / draining module Ni <155 <23 which minimizes exposure to any acid. Pb <10 <2,5 Sb <6,1 <0,5 GREAT RETURN ON INVESTMENT Se <3,9 <1,2 90% COST SAVING Sn <22 <9,1 HIGH PRODUCTIVITY Ti <59 <8,1 ON-DEMAND ACID PURIFICATION V <51 <11 AUTOMATED & SAFE Zn <261 <49 Typical Nitric acid quality with Milestone duoPUR EFFICIENT CLEANING Cleaning is a pivotal step in trace elemental analysis. It COUPLED WITH HIGH directly impacts the blank values and therefore, the ability PRODUCTIVITY to achieve lower detection limits. At the same time, it is often a tedious and time-consuming step. Typical cleaning procedures involve either acid baths or a microwave method to clean digestion vessels, SUPERIOR CLEANING EFFICIENCY glassware and ICP accessories, both approaches limit FULLY AUTOMATED & SAFE productivity and efficiency. The acid steam cleaning process in the traceCLEAN ensures lower blanks, IMPROVED WORKFLOW improves your detection limits, without compromising the throughput. SUITABLE FOR LABORATORY GLASSWARE SUPERIOR CLEANING EFFICIENCY THINK BLANK Traditional cleaning methods require several hours Understanding how to control contamination and occupy valuable space in the fume hood. The and use modern systems for sample preparation traceCLEAN process ensures greater cleaning are pivotal today, since trace metals analysis is effi ciency through freshly distilled hot vapours of common in many laboratories. Reducing potential nitric acid that leach metal contaminants from the contamination involves several steps in the elemental items. process, including the choice of acid quality, cleaning procedures and sample methods. In each of these processes, the analyst faces specifi c tasks. IMPROVED WORKFLOW The cleaning process with the traceCLEAN takes about an hour, enhancing the overall lab workfl ow. Digestion vessels, ICP accessories, volumetric fl asks, and other glassware can be cleaned, even multiple times during a day. FULLY AUTOMATED & SAFE Place the items to be cleaned in the traceCLEAN, through the rotating design of the holder, which simplifi es the introduction and removal of all items. Select the program or create a new one and press “Start” on the touch screen terminal. traceCLEAN THINK GREEN Element Microwave cleaning cleaning For the fi rst time the concepts and signifi cance of Al 287 ± 46 258 ± 24 green chemistry are applied to trace elemental Cd <72 <72 analysis. The introduction of Single Reaction Chamber (SRC) technology enhances the sample Co <56 <56 preparation capabilities, moving toward a greener Cr <85 <85 approach. The new performance reduces the Cu 144 ± 39 117 ± 12 reagents volumes, substitutes critical reagents and lowers the acid concentration. The Think Green Fe <474 <474 book collects practical examples on how the green Mg 289 ± 22 232 ± 15 approach can be applied in trace elemental analysis. Na <121 <121 Ni <55 <55 Pb <57 <57 Tl <261 <261 Zn 995 ± 80 <876 Results in pg/g (ppt) in 5% HNO solution. 3 The microwave cleaning @ 180°C with HCl and HNO . 3 The traceCLEAN cleaning with HNO . 3 New Developments in Automated Cleaning of PTFE, Glass, and Quartz Components used in Ultra-Trace Analysis. Robert Richter. Spectroscopy, June 2001. MILESTONE Established in 1988, Milestone is headquartered in Italy and has offi ces in Germany, Switzerland, the Unites States, China, HELPING CHEMISTS Japan and Korea. We operate worldwide through a network of over 100 exclusive distributors, all providing our customers premium application and service support. Milestone’s mission is to help chemists by offering them the most advanced instrumentation for sample preparation and direct mercury analysis in the world. Our industry-leading technology, in combination with fast, responsive service and applications support, allows Milestone to support our goal of providing you the highest return on investment possible. ADDITIONAL MILESTONE SOLUTIONS FOR ELEMENTAL ANALYSIS ETHOS UP ultraWAVE DMA-80 High Performance The Game Changer in Direct Mercury Analyzer Microwave Digestion Microwave Digestion System WWW.MILESTONESRL.COM MILESTONE MILESTONE Srl - 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 H E L P I N G C H E M I S T S 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 UNI EN ISO 9001: 2008 www.milestone-general.com - email: info@milestone-general.com CERTIFIED MLS GmbH - Auenweg 37 D-88299 Leutkirch im Allgau - Germany Tel: +49 (0)7561 9818-0 - Fax: +49 (0)7561 9818-12 T254EN-003 • 2020-05 www.mls-mikrowellen.de - email: mws@mls-mikrowellen.de CA