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2126-2150 of 2260 Resource Library
2126-2150 of 2260 Resource Library
APPLICATION NOTE
Introduction In surface waters, phosphorus commonly exists in its phosphate form. A high concentration of phosphate in water is indicative of domestic waste, industrial effluent, and agricultural runoff which can lead to eutrophication. Eutrophication …
APPLICATION NOTE
Introduction Iron is rarely found in its elemental form in nature due to the high tendency of its ions, Fe(II) and Fe(III), to form oxygen and sulphur containing compounds. Concentrations of iron found in surface waters are typically no greater than 1 …
APPLICATION NOTE
Introduction Chromium (VI) ions react with diphenylcarbazide in weakly phosphoric solution. The product, diphenylcarbazone, is a red-violet complex which can be detected photometrically at 550 nm. The chromate cell test kit is suitable for the …
APPLICATION NOTE
Introduction In this application, the quantitative analysis of formaldehyde was successfully executed using the LAMBDA 265 UV/Vis spectrophotometer and Merck Spectroquant formaldehyde cell test kit. Principle Formaldehyde reacts with chromotropic acid …
APPLICATION NOTE
Introduction Ammonia-nitrogen (NH3-N) occurs naturally in groundwaters at concentrations below 0.2 mg/L and up to 12 mg/L in surface waters, as a result of decomposition of organic matter. High concentrations of ammonia in surface waters are toxic to …
APPLICATION NOTE
Introduction a-chymotrypsinogen is a precursor, or zymogen, of chymotrypsin. Chymotrypsin fulfils the role of breaking down proteins into smaller peptides in the digestive tract. It also displays an interesting property in that, when it unfolds due to …
APPLICATION NOTE
Introduction To protect the health of allergic consumers from the inadvertent or intentional contamination by allergens, different analytical methods for the sensitive detection of allergens in food were developed over the years. In this work we present …
APPLICATION NOTE
Introduction Nickel-based superalloys are widely used in challenging environments because of their physical properties, which include, but are not limited to, toughness, high heat resistance, high strength-to-weight ratio, and low thermal conductivity. …
APPLICATION NOTE
Introduction With the development of optoelectronic communication technology, the demand for radio and television materials is increasing, especially that of high-purity rare earths. As such, rare earth elements (REEs) are often referred to as …
APPLICATION NOTE
Introduction Isotope ratio measurements are used in many application fields, such as nuclear, geological, geochronological dating, clinical, and others. Depending on the industry, there is interest in measuring natural, depleted, or enriched isotope …
APPLICATION NOTE
Introduction Inductively coupled plasma mass spectrometry (ICP-MS) is an indispensable analytical tool in the semiconductor industry, since one of the most sensitive techniques for analyzing metallic impurities in chemicals. Most chemicals are analyzed …
APPLICATION NOTE
Introduction Metallic contamination in semiconductor products adversely affects device performance. Transition metals are among the most commonly occurring forms of metal contamination – they tend to diffuse through the semiconductor material and …
APPLICATION NOTE
Introduction ASTM method D8110-17 “Standard Test Method for Elemental Analysis of Distillate Products by Inductively Coupled Plasma Mass Spectrometry (ICP-MS)” describes a procedure for the determination of a few trace elements in light and middle …
APPLICATION NOTE
Introduction Nickel-based superalloys benefit from high heat resistance, high melting points, retention of mechanical and chemical properties at high temperatures, and high corrosion resistance, among others, and are therefore widely used in challenging …
APPLICATION NOTE
Introduction In this work, we demonstrate that PerkinElmer's NexION® 2000 ICP-MS, with its unique RF generator and ion optics, coupled with the Syngistix™ Nano Application Software Module, can be used to accurately measure and characterize NP sizes of …
APPLICATION NOTE
Introduction Zircon is a mineral used in a wide range of industrial products, including refractory materials, ceramics, and enamelware, as well as electronic, functional, and structural ceramics, which are fundamental materials used in the electronics, …
APPLICATION NOTE
Introduction Spectrosopic techniques, such as UV-Visible spectrometry, can be deployed to observe the chemical changes taking place during fast reactions. However, in many cases the reaction timescales are too fast to be performed and observed by the …
APPLICATION NOTE
Introduction The most commonly used organic chemicals in integrated circuit (IC) fabrication are isopropyl alcohol (IPA), propylene glycol methyl ether acetate (PGMEA), propylene glycol methyl ether (PGME), and n-methyl pyrrolidone (NMP). These solvents …
APPLICATION NOTE
Introduction The United States Pharmacopeia (USP) has announced that its new standards for elemental impurities in drug products has been implemented since January 1, 2018. General Chapters <232> and <2232> specify the list of elements and their …
APPLICATION NOTE
Introduction Cisplatin, carboplatin, and oxaliplatin are the most widely used of platinum-based cancer chemotherapy drugs in the Western world. Cisplatin's effectiveness is due to its ability to bind to the DNA, resulting in DNA-platinum (Pt) adducts, …
APPLICATION NOTE
Introduction In 2018, the United States Pharmacopeia (USP) in General Chapters <232> and <233> updated the list of elements and maximum permissible daily exposure (PDE) values of elemental impurities in drugs, pharmaceutical substances, and raw …
APPLICATION NOTE
Introduction The most significant challenge in trace element analysis of drinking water is ensuring detection capability that complies with the regulatory framework at the same time as maximizing sample throughput. The NexION® 1100 ICP-MS solves the …
BROCHURE
Refinery and Natural Gas Analysis 2 ENSURE MORE ACCURATE AND EFFICIENT ANALYSIS 3 www.perkinelmer.com/petrochemical Oil refineries and natural gas producers around the world require their lab operations to perform large numbers of analyses before their …
CASE STUDY
Introduction Predicting the long-term impact some substances have on human health and the environment is extremely difficult and in some instances we only become aware of certain substances and chemicals’ toxic impact after they have been widely used. …
APPLICATION NOTE
Introduction A major source of failure in electronic circuits is thermal expansion, and the problems it causes. To prevent this, electrical engineers employ thermal conductors to dissipate the heat, and use low expansivity materials to match the low …