1751-1775 of 2059 Resource Library
1751-1775 of 2059 Resource Library
APPLICATION NOTE
Introduction Optimized methods are needed for the analysis of toxic compounds in air to understand the impact to human health. People breathe approximately 20,000 liters of air a day so this concern is significant. EPA Method TO-17 is used to determine …
APPLICATION BRIEF
Introduction For yogurt manufacturers, fat and dry matter content are important quality parameters that determine properties of the end-product. A large number of samples are processed every day, requiring high sample-throughput capability and accurate …
APPLICATION NOTE
Introduction With the popularity of wine consumption continuing to grow, regulations are being implemented as to the metal content allowed in wines. These analyses can be easily accomplished using flame atomic absorption (AA) spectrometry. This work …
APPLICATION NOTE
Background Humans can be exposed to heavy metals through a variety of means, including consumption of contaminated food. Although heavy metals are usually present in foods at very low levels, long- term exposure can have negative health impacts. Two of …
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, …
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 …
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 Thallium is considered one of the most toxic heavy metals and a cumulative poison that can cause adverse health effects and degenerative changes in many organs. The main threat to humans is through occupational exposure and environmental …
APPLICATION NOTE
Introduction BTEX are regulated toxic compounds while benzene is also an EPA target carcinogen. The investigation of these compounds, especially in drinking water at low levels, is critical to protect public health. This application note focuses on …
APPLICATION NOTE
Introduction In this work, samples were digested with aqua regia using reflux conditions according to DIN method 38414. After proper dilution of the digested sample solution, Hg was measured interference-free using SnCl2 as the reductant. The recoveries …
APPLICATION NOTE
Introduction Customer complaints of odors within a new car are rising with the increasing number of new car buyers. Although odors can be subjective, it is now well known that the new car smell is the result of chemicals emitted from the in-vehicle …
APPLICATION NOTE
Introduction This method outlines the analysis of volatile organic compounds in a variety of solid waste matrices including various air sampling trapping media, ground and surface water, soils, and sediments among others. The method requires not only …
APPLICATION NOTE
Introduction Microwave sample preparation provides an efficient and clean sample preparation for multi-element analytical techniques such as ICP-OES and ICP-MS. As Microwave assisted digestion has evolved, so have the methodologies. EPA method 3052 is …
APPLICATION NOTE
Introduction Methyl-tert-butyl ether (MTBE) and the combination of benzene, toluene, ethylbenzene, and xylenes (BTEX), are routinely monitored in soil and ground water to determine whether petroleum contamination has occurred due to industrial runoff, …
APPLICATION NOTE
Introduction Major components of poultry feee such as moisture, protein, fat, and ash, can have a key influence on poultry growth or egg production. Therefore, accurate analysis of these nutritional parameters within the feed is highly important for …
APPLICATION NOTE
Introduction Corn is the most plentiful grain grown worldwide with over 1.09 billion metric tons produced in 2018.1 It is a versatile crop and can be found in a wide range of products such as foodstuffs, animal feed, ethanol and even bio-based plastics.2 …