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851-875 of 2649 Resource Library
851-875 of 2649 Resource Library
APPLICATION NOTE
Introduction Lead (Pb) and cadmium (Cd) are common pollutants in grains and are extremely toxic. Pb is harmful to human organs even at trace levels, and once it accumulates in the body, it causes inhibition of hemoglobin formation and neurological …
APPLICATION NOTE
Introduction Graphite furnace atomic absorption spectrophotometry (GFAAS) has been widely applied to the determination of trace elements in food due to its selectivity, simplicity, high sensitivity, and its capability for accurate determinations in a …
APPLICATION NOTE
Introduction With an inherent toxicity, a tendency to accumulate in the food chain and a particularly low removal rate through excretion, lead (Pb), cadmium (Cd) and arsenic (As) cause harm to humans even at low concentrations. … Analysis of Lead, …
WEBINAR
Introduction to HPLC … Introduction This presentation is the first in a series that will introduce you to the most widely used analytical technique in the world – high performance liquid chromatography (HPLC). HPLC is a separation technique that allows …
APPLICATION NOTE
Introduction Total Petroleum Hydrocarbons (TPH) is a term used to describe a large family of compounds originating from crude oil and refined petroleum products, whose composition depends on the source and the process in which they are involved. This …
APPLICATION NOTE
Introduction Asses the cooked viscosity of ground material, carbohydrates (starch, flour, whole meal), proteins (soy, gluten, milk), gums and plastics. … General Pasting Method - RVA Method …
APPLICATION NOTE
Analysis of 24 Polar and Non-Polar Volatile Organic Compound (VOCs) Emissions from Stationary Source
Volatile organic compounds (VOCs) have been recognized as a primary source of air pollution, and are known photochemical reaction precursors which facilitate the production of tropospheric, or ground-level, ozone. Ground-level ozone can have significant …
APPLICATION BRIEF
Introduction Animal performance and feed milling cost are dictated by nutritional requirements of the feed products. Performing frequent checks against production specifications is important to ensure quality of the finished compound feed and reduce raw …
APPLICATION NOTE
Introduction Acrylamide is a probable carcinogen organic compound that is found in some foods that are cooked at elevated temperatures. It’s origins are due to the condensation of the amino acid asparagine and glucose as part of Maillard reaction. In …
APPLICATION NOTE
Introduction Aflatoxin B1 is considered to be the most genotoxic of the mycotoxins, and, when ingested by cows, is converted to aflatoxin M1 which has been shown to cause liver cancer in certain animals. … Analysis of Aflatoxins by …
ARTICLE
Pharmaceutical firms undergo FDA inspections that regularly assess their compliance with cGMP, as well as with the 21 CFR Part 11 regulations of electronic data records and signatures. Passing any such review requires preparation to ensure that the …
APPLICATION NOTE
Introduction Polycyclic aromatic hydrocarbons (PAHs) are prevalent in a number of environmental matrices, and are created as a result of the combustion of fossil fuels. PAHs are water soluble and toxic to invertebrate aquatic organisms. They have also …
APPLICATION NOTE
Introduction Semivolatile organic compounds are readily found in the environment, and pose a threat to human and animal health. As such, most nations have placed limits on the amount and types of SVOCs that can be released into the environment, owing to …
APPLICATION NOTE
Introduction Volatile organic compounds (VOCs) are chemically diverse and abundant in nature. Biogenic VOCs are present in and emitted by most plant parts and play an essential role in plant communication, pollinator/predator attraction, plant-bacterial …
APPLICATION NOTE
Introduction Ethanol is an important blending component in fuels commonly used in gasoline/petrol. Because of its wide use, it is important to monitor the concentrations of impurities in the ethanol which can negatively impact the performance of the …
APPLICATION NOTE
Introduction Due to aluminum’s varied uses and popularity, there are many grades available. The London Metal Exchange (LME) lists specifications for two commonly-used aluminum (Al) purities: 99.5% and 99.7%1, with each having up to six inorganic …
BRIEF
Do-it-Yourself is Not Cost-effective Anymore … Introduction Approximately half of all pharmaceutical laboratories practice some level of self-maintenance — a do-it-yourself (DIY) approach that uses internal resources to perform instrument care and …
APPLICATION NOTE
Analysis of Aluminum Alloys with the Avio 220 Max ICP-OES Following London Metal Exchange Guidelines
Introduction Due to its unique characteristics, aluminum (Al) is used in a wide variety of commercial and industrial applications. Its utility can be further enhanced by combining it with other metals to create aluminum-based alloys, where the …
APPLICATION NOTE
Introduction Spectroscopic techniques, especially infrared (IR) spectroscopy, can give specific chemical information, identifying intermediates and products during extremely fast reaction based on the spectral information collected. Modern FT-IR …
APPLICATION NOTE
Introduction Gold (Au) is one of the most precious and useful metals, due to a unique combination of characteristics: resistance to tarnish/corrosion, ability to conduct electricity, and ability to be easily formed into a variety of shapes. And because …
APPLICATION NOTE
Introduction Although considered pharmacologically inert, pharmaceutical excipients have been shown to interact with active drug substances to affect the safety and efficacy of drug products. One of the areas of major concern is the potential chemical …
APPLICATION NOTE
Introduction Thymopentin (TP5), a 5-amino-acid polypeptide, is a safe and effective immunostimulant utilized in the treatment of a variety of immune disorders. Several residual solvents are used in the manufacture of TP5, including the "universal …
APPLICATION NOTE
Introduction A typical FT-IR spectrometer will scan down to the long wavelength limit of approximately 400 cm-1 limited by the optical components such as the beamsplitter and detector which contain potassium bromide (KBr). However, there are a growing …
APPLICATION NOTE
Introduction Infrared Spectroscopy has become a ubiquitous tool in the analysis of pharmaceutical raw materials, with both Mid- and Near-infrared spectroscopy functioning as commonplace techniques for the investigation of both excipients and active …
APPLICATION NOTE
Introduction Testing for harmful metal(loid)s that may be included in raw materials, processes, paints and additives used in the manufacturing processes of children's toys has been mandated by the regulation EN 71-3. This regulation recommends specific …