22


Environmental Laboratory


Redesigned Metals Digestion Cup is Now “The Ultimate Cup”


An improved experience is waiting for customers who use the 50-mL disposable metals digestion cup, from Environmental Express, for their laboratory applications. The redesigned digestion cup, now The Ultimate Cup, boasts many new features for optimal performance.


Increased wall strength provides more durability for digesting with concentrated acids. Graduation lines have been added to both sides of the cup making it easier to fill. The screw-thread profile has been redesigned with a tighter seal to eliminate leaks and engage the FlipMate®


filtration


system more securely. The Ultimate Cup is available with a liner-less cap to complement the current polyethylene-faced cap. A larger dimple on the bottom of the cup provides more stability for wobble-free use. A few features on the digestion cup remain the same. Still the industry’s cleanest digestion cup, The Ultimate Cup is molded from the same polypropylene resin that customers have come to trust. The company continues to certify its digestion cups for 68 elements—the most on the


market—and an improved Certificate of Analysis for background metals and volume accuracy is included in every box purchased. The Ultimate Cup is ideal for use with the Environmental Express®


HotBlock® and AutoBlock® Digestion Systems.


The Next Level of True Blue Performance: New GC Inlet Liners in Stock Now


For More Info, email: email:


GC method development just got easier for scientists all around the globe. Restek’s EZGC online method development tools are now available in English, Portuguese, Spanish, French, Italian, Dutch, German, Japanese, and Chinese languages. No matter where you are in the world, EZGC software lets you develop new GC methods in minutes directly from your desk and optimize or modify existing methods reliably and without guesswork. Increase your productivity with our free, easy-to-use EZGC online software—it saves time, increases certainty, and is now available in multiple languages.


For More Info, email: email:


This new and improved version of Restek’s popular EZGC chromatogram modeler for polymer capillary columns is just as simple to use as the original, but it has been updated and now offers advanced options that give you more control.


Based on user feedback, the new Pro EZGC chromatogram modeler lets you do the following: start with either the column you have or a column recommended by the programme, select compounds from our libraries or bring your own list, target specific compounds for resolution, alter the GC conditions to optimise your model quickly and easily, repeatedly refine the temperature programme, switch carrier gases, change the control method (constant flow, pressure, or linear velocity), view elution temperatures in the peak list, and see results for multiple phases.


The EZGC method translator and flow calculator tools make it simple to switch carrier gases, change column dimensions or control parameters, or to optimize a method for speed or efficiency. Simply enter your method specifications and the programme will return a full set of calculated method conditions that will provide similar chromatography. Use the EZGC method translator and flow calculator tool to optimise your analysis for speed so you can increase sample throughput.


Ess Enviro Online A5 advert 2017.qxp_Layout 1 20/03/2017 14:14 Page 1


For More Info, email: email:


For More Info, email: email:


Essential Environment Online The Online Guide to UK and European Environmental Protection Legislation


Effective environmental management is one of the biggest challenges faced by the public and private sectors today. Whether you are a local authority, small business or multi-national enterprise, we all operate in an increasingly regulated environment and without access to the right information, operations and reputation can be adversely affected.


Essential Environment Online has been designed to help businesses, local authorities and education establishments keep track of developments in UK and EU environmental policy and regulation. Providing clear, simple information and guidance at your fingertips, it is the only reference resource on environmental legislation you will ever need.


10 Day Free Trial - visit essentialenvironment.org.uk


Published by Environmental Technology Publications (a division of International Labmate Limited) Unit 14, Oak Court Sandridge Park, Porters Wood, St Albans, Hertfordshire AL3 6PH For further information call +44 (0)1727 855 574


42131pr@reply-direct.com 41397pr@reply-direct.com


Ocean Optics has shown how highly-sensitive, trace-level Raman spectroscopy measurements can detect concentrations of insecticide that are less than a fiftieth of the level judged harmful to honeybees.


Using a real-world example related to the problem of honeybee population decline, the company demonstrated the power of RAM- SERS-SP Surface-Enhanced Raman Spectroscopy substrates’ proprietary gold-silver nanosponge alloy. By comparing the ability of new gold-silver substrates with that of traditional substrates to detect imidacloprid, an insecticide suspected to be dangerous to bee colonies, Ocean Optics scientists were able to demonstrate the enhanced sensitivity that RAM-SERS-SP substrates bring to Raman measurements.


SERS substrates amplify very weak Raman signals by many orders of magnitude, with measurements of SERS-active analytes possible at even parts- per-trillion levels. Silver-only SERS substrates work best with 532 nm Raman excitation, while gold substrates are better suited to 785 nm Raman systems. By combining the silver and gold on one substrate the new SERS nanosponge substrates perform well with either wavelength. When used with 638 nm Raman excitation, the nanosponge substrates are enhanced to an even higher level of sensitivity.


Recent high rates of honeybee loss have been investigated by US government regulators and other researchers. According to ongoing US Environmental Protection Agency (EPA) studies, the insecticide imidacloprid has been identified as a threat to commercial honeybee colonies, with the agency citing traces at concentration levels greater than 25 ppb as likely harmful to honeybees.


To test the effectiveness of Ocean Optics substrates in detecting imidacloprid at these harmful trace levels, Ocean Optics scientists set up a lab experiment using the company’s gold nanoparticle and gold-silver nanosponge SERS substrates. They made a series of measurements using the gold nanoparticle substrates, in a setup with 785 nm Raman laser excitation, and a series of measurements using the gold-silver nanosponge substrates, in a setup with 638 nm Raman excitation.


In the test, the gold-silver nanosponge SERS substrates delivered the best results, detecting imidacloprid concentrations as low as 0.4 ppb (well within the 25 ppb concentration rate cited by the EPA as harmful to bees). The substrates high sensitivity and low background noise made it easier to discern Raman peaks at these very low- concentration levels.


Raman is a useful technique for fast, non- destructive analysis, with the enhanced sensitivity provided by SERS substrates allowing detection of trace levels of samples such as insecticides. Affordable and easy to use, the Ocean Optics SERS substrates are well suited to deployment in the lab or field. To read the full Honeybee Insecticide Detection application note, visit the Ocean Optics website.


For More Info, email: email:


IET May / June 2017 www.envirotech-online.com


For More Info, email: email:


41751pr@reply-direct.com


The Buzz Around Nanosponge SERS and Trace-Level Detection


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56