Thermo Fisher Scientific Inc. is pleased to
announce a new application for the determination of nitrite and nitrate in milk
by
ion chromatography (IC) with suppressed
conductivity detection using
in-line sample preparation. Application Note
279:
Time Savings and Improved Reproducibility of Nitrate and
Nitrite Ion Chromatography Determination in Milk Samples describes the method where the prepared
sample is separated on the high-capacity Thermo Scientific Dionex IonPac
TM
AS20
hydroxide-selective anion-exchange column to
resolve nitrite and nitrate from the remaining sample components. The Thermo
Scientific Dionex Reagent-Free
TM IC (
RFIC TM) system automatically
prepares the separation eluent to achieve high separation reproducibility. The
automated sample and eluent preparation saves time and improves the
reproducibility of the analysis.
Excessive consumption of nitrite and nitrate has
been implicated as a cause in some health problems and, as a result, the United
States Environmental Protection Agency (
U.S. EPA) has regulated the amount of nitrite
and
nitrate in drinking water. These same limits
should be applied to milk even though the FDA and USDA have not required
testing of milk for nitrate and nitrate.
This application note and many others can be
found at
www.thermoscientific.com/dionex
under the
Documents tab.
About Thermo Fisher Scientific
Thermo Fisher
Scientific Inc. is the world leader in serving science. Our mission is to
enable our customers to make the world healthier, cleaner and safer. With
revenues of nearly $11 billion, we have approximately 37,000 employees and
serve customers within pharmaceutical and biotech companies, hospitals and
clinical diagnostic labs, universities, research institutions and government
agencies, as well as in environmental and process control industries. We create
value for our key stakeholders through two premier brands, Thermo Scientific
and Fisher Scientific, which offer a unique combination of continuous
technology development and the most convenient purchasing options. Our products
and services help accelerate the pace of scientific discovery, and solve
analytical challenges ranging from complex research to routine testing to field
applications.
