Showing results for: trace analyzer Articles
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Analyze Trace Amounts of Solvents in Water Using Packed Column GC
Glass or stainless steel columns containing 80/120 Carbopack B/3% SP-1500 packing can be used to analyze water-based samples for ppm to low percentage levels of many organic compounds. This bulletin describes minimum detection limits and maximum capacity of these columns, adsorption and memory effects, and other factors that affect component quantitation. Problems are defined that might arise ...
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Tracking and tracing: principles and practice
The meaning of the concepts "tracking" and "tracing" are clarified, trying to avoid overlap and making them a complementary pair. Tracking and tracing systems are classified using eight attributes. Seven applications of tracking and tracing systems are analysed using these attributes. It is seen that most existing tracking and tracing systems are of a relatively simple type, ...
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Monitoring the purity of nitrogen in cryogenic air separation plants - Case Study
In the manufacturing of the containerised plants, Linde Cryoplants Ltd utilise the Systech Illinois EC923 trace oxygen analyser to monitor the purity of the nitrogen. With 125 years of experience and expertise in the field of cryogenics, Linde Cryoplants is a leading manufacturer of air separation plants. Their compact Nitrogen and Oxygen generators provide custom-made and standard supply ...
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Understanding ambient air quality instrument operating ranges
In order to maximize the performance of an air quality monitoring station, careful selection of instrumentations is essential. One of the key issues is to have a good understanding of what pollutants need to be measured and at what concentrations. There are several different types of air quality monitoring, these include: Trace/Background Monitoring This is performed in areas where there is no ...
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Analysis of mine water from four decommissioned pits in south-western Ghana – implications for remediation programmes for mine closure
Research into water quality status of accumulated water in decommissioned pits is a grey area in Ghana and could be of significant benefit in the effectiveness of remediation of pits after mining. Water sampled from four decommissioned pits in Amansie West District were analysed for their water quality status. Seasonal variations of physico-chemical parameters for determining water quality ...
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Analyses of trace elements on quartz surfaces in sulfidic mine tailings from Kristineberg (Sweden) a few years after remediation
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been applied to determine the elemental composition of the surface layer, as well as of the first interior layer, of quartz grains from the mine tailings from Kristineberg (northern Sweden) in order to determine concentration gradients between these two layers. The quartz grains were collected from the oxidized and ...
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Linking trace element variations with macronutrients and major cations in marine mussels Mytilus edulis and Perna viridis
Marine mussels have long been used as biomonitors of contamination of trace elements, but little is known whether variation in tissue trace elements is significantly associated with those of macronutrients and major cations. Here, we examined the variability of macronutrients and major cations and their potential relationships with bioaccumulation of trace elements. We analyzed the ...
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Analyze trace polar hydrocarbons more accurately and reliably with new alumina BOND/MAPD plot columns!
Reproducible, predictable responses for reduced calibration frequency. Exceptional capacity which improves resolution and response. Highest temperature stability—application range extended to 250 °C. New Technology Improves Trace Analysis of Polar Hydrocarbons The chromatographic analysis of light hydrocarbons, including unsaturated isomers, is common in the petrochemical ...
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New IONICON Extended Volatility Range (EVR) PTR-MS
Ultra-Fast Time Response Even for IVOCs & SVOCs Real-Time Ultra-Sensitive trace VOC analyzers from IONICON are known for their response times in fractions of a second and hence are often used to follow rapidly changing processes and VOC signals. However, some substances are known to show a slower instrumental response because of unwanted surface interactions. These substances are either ...
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The Evolution from SIFT-MS to PTR-MS
From SIFT to ultimate performance PTR-TOF trace gas analyzers The success story of PTR-TOFMS has its roots in the so-called “Flowing Afterglow Technique”, introduced in the 1960s. From this starting point continuous research and innovations by various experts, who wanted to eliminate instrumental drawbacks and shortcomings, have led to different technological milestones, among them ...
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PTR-MS now with Patented Ion-Chemistry Quality and TRU-E/N
The proprietary TRU-E/N™ method for utmost quantification accuracy Founded by the inventors of Proton-Transfer-Reaction – Mass Spectrometry more than 20 years ago, IONICON has always been renowned for absolutely precise control of the ion chemistry during chemical ionization. For IONICON this fact is still true even after the introduction of Radio Frequency (RF) components for ...
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Studying Clouds in the Antarctic with Micro Pulse LiDAR
Researchers in the Australian Antarctic Science project collected aerosol data above the Southern Ocean to improve their understanding of the connection between clouds and climate change. Evaporation and condensation are the basic concepts leading to cloud formation; however, many factors impact the end results. In general, as water vapor molecules rise from the surface of the Earth, they ...
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Profile: Some Factors Affecting SPME Analysis and PAHs in Philadelphia`s Urban Waterways
The main points covered in the paper are (1) to clarify some important aspects of the analytical method with solid phase micro extraction (SPME) and (2) to demonstrate a way of studying persistent organic pollutants in aquatic environment. These points are particularly interesting because the development of environmental science largely depends on the development of suitable analytical methods ...
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A marked improvement in the reliability of the measurement of trace moisture in gases
Introduction Water is an important substance without which mankind cannot survive. However, it also causes problems such as residual impurity in scientific experiments and in manufacturing processes where a high-vacuum condition or a high-purity gas is required. This is because water is present in the atmosphere in large quantities and therefore can intrude readily everywhere, and can adsorb ...
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TP09b Intelligent Dilution Systems for ICP-OES and ICP-MS
Analytical laboratories confront a wide range of issues that can affect their data, such as resources, trained personnel, time constraints and traceability. New dilution and sample introduction accessory systems have been engineered to confront these issues. With these systems it is common to see calibration coefficients of > 0.999, serial dilutions with a precision of < 3% and an accuracy ...
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Characterization of Polymer Carbon Sieves, Graphitized Polymer Carbons and Graphitized Carbon Blacks for Sample Preparation Applications
The use of carbons in sample preparation techniques such as solid phase extraction (SPE) and air sampling has been ongoing for several decades. Recent advancements in sample preparation techniques have led to the use of carbons in micro-SPE (i.e., pipette tips packed with particles), solid phase microextraction (SPME) techniques and carbon coatings for both gas and liquid sample preparation ...
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Did you know: DET H2O?
Chromatotec has expanded its offer with trace moisture probe ! After several years of collaboration, Chromatotec is acquiring part of the activity of Opta-Periph company : "Moisture in gas analysis". With this transfer of technology, Chromatotec group offers complete solutions for the measurement of humidity in chlorine (CL2), in pure gases including gases with more than 30% oxygen (O2) or ...
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The sewer system, an undervalued place, that we depend on every day
How Digitizing the Sewer supports Climate Change A good infrastructure, such as our sewer system, is essential for a vital, viable, sustainable and social development of a country’s economy. Not only does it play an important role in sanitation and disease prevention, but the sewer system also plays a crucial role in the sustainability of our planet and the future of our generations . Due ...
By KANDO
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Learn how GC is used in Alcohol Profiling to ensure product quality and to keep consumers safe
Gas Chromatography (GC), a core technique for separating and analyzing compounds, is commonly used across multiple industries. One of those industries is the alcohol industry, where GC is used to keep consumers safe and to ensure flavors are at their best. In beer analysis and brewing, beverages are characterized by complex mixes of compounds which create the signature aromas and flavors enjoyed ...
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Microwave Digestion Method Applied to Alumina Samples
Aluminum oxide has high thermal and chemical stability, and can be used for high-temperature insulation, making heat shields or protective coatings. When making other materials, the purity of alumina should be very high, and the impurity elements of the material have a great influence on the performance of the final product. When analyzing trace elements in alumina, the most important step is ...
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