Mass Spectrometry & Spectroscopy 15 Simplified Sample Preparation of Dairy Products with Metrohm Inline Dialysis
Nearly any analysis of food products requires some kind of sample preparation to remove particles, fats, proteins, and more from the matrix to guarantee data reliability and safeguard long-term instrumental performance. A free White Paper compares automated Inline Ultrafiltration and Inline Dialysis to the traditional Carrez clarification procedure for the analysis of dairy products by ion chromatography (IC).
Most sample preparation procedures for food analysis are carried out manually and offline, accounting for a significant amount of laboratory work and operating costs. This can also potentially impact the analysis due to human errors. Carrez clarification, which is used to remove proteins and fats from dairy products prior to analysis, involves several manual steps and the addition of specific chemicals.
To overcome such time-consuming manual procedures and protect laboratory assets, innovative automated inline sample preparation techniques were developed by Metrohm - among them Inline Ultrafiltration (for removing particles) and Inline Dialysis (for removing fats and proteins). This White Paper focuses on the results of a six-month study comparing traditional Carrez clarification with automated inline sample preparation techniques for dairy samples. Results show that inline dialysis is a robust and highly efficient alternative to the traditional manual sample treatment used for dairy samples and other challenging food matrices.
More information online:
ilmt.co/PL/jxqo and
ilmt.co/PL/o11M
59978pr@reply-direct.com
Metrohm Inline Dialysis is a fully automated inline sample preparation techniques to remove fats and proteins from dairy samples prior to analysis, e.g., by ion chromatography
Free White Paper: Green Alternative Methods for Voltammetric Analysis in Different Water Matrices
Metrohm presents four new mercury-free sensors for the trace determination of heavy metals in various water matrices using voltammetric analysis.
Stripping voltammetry uses electrochemical sensors for the determination of heavy metal ions in different types of samples. To meet legal regulations and eliminate the use of metallic mercury, Metrohm has developed Hg-free sensors. These Hg-free sensors can measure trace levels of cadmium, lead, zinc, arsenic, chromium, and other heavy metals in various water matrices ranging from boiler feed to drinking to sea water samples. A free White Paper presents the details of this solution along with several application examples.
Low detection limits (between µg/L and ng/L), the possibility to distinguish between different oxidation states (e.g., As(V) and As(III)) as well as free and bound metal ions, and low costs of ownership combined with quick results (within 10– 15 minutes) make stripping voltammetry attractive for both stationary and mobile applications.
Recently, Metrohm has taken great efforts to combat the challenges related to the replacement of toxic Hg in the voltammetric determination of heavy metals. These efforts have resulted in the development of four new mercury-free sensors:
• scTRACE Gold electrode • 11L carbon screen-printed electrode • Glassy carbon electrode • Bismuth drop electrode
By utilising these sensors with the 884 Professional VA or the 946 Portable VA Analyser from Metrohm, a total amount of 16 heavy metals can be determined with high selectivity and reproducibility of results with detection limits in the µg/L or ng/L range.
View the video:
ilmt.co/PL/NZxb
More information online:
ilmt.co/PL/67lo and
ilmt.co/PL/q1M7 59977pr@reply-direct.com
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