Milestone Inc.

https://www.spectroscopyonline.com/spec_w/innovations

To comply with government regulations concerning nutrition and safety, food producers commonly use atomic spectroscopy techniques such as inductively coupled plasma–optical emission spectroscopy (ICP-OES) and ICP-mass spectrometry (ICP-MS). Over the last few years, new test methods have emerged in food QA/QC laboratories to better understand food authenticity, nano-particle presence, and distinguishing different elemental species. In this webinar we will review current analytical methods as well as necessary microwave sample preparation techniques to enhance efficiency and accuracy for the modern food lab.

Discover new methods around atomic spectroscopy for food authenticity, nano particle analysis, and elemental species analysis

Understand which atomic spectroscopy technique is best suited for food nutrition and food safety analysis

Review the full process for analyzing various food samples, from initial sample preparation to ICP-MS or ICP-OES analysis

See how both rotor-based and single reaction chamber (SRC) digestion technologies can accommodate the needs of food testing laboratories

Eric Farrell, Product Specialist, Milestone Inc.

Ross Ashdown, Marketing Manager for AAS, MP‐AES, and ICP‐OES, Agilent Technologies

Tuesday, October 13, 2020 at 2pm EDT | 1pm CDT | 11am PDT

On demand available after airing until Oct. 13, 2021

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Live: Tuesday, October 13, 2020 at 2pm EDT | 1pm CDT | 11am PDT

On demand available after airing until Oct. 13, 2021

Innovations in Trace Metals Analysis for the Modern Food Testing Lab

Achieve high performance and high throughput within a single rotor-based platform.

High Quality Sample Preparation for Trace Metals Analysis

Milestone's UltraWAVE microwave digestion system with its groundbreaking single reaction chamber (SRC) technology enables the simultaneous digestion of up of to 22 different food sample types with different chemistries at temperatures and pressures as high as 300 °C and 200 bar, greatly increasing efficiency and simplifying product development.

	Elemental impurities are monitored in foods to ensure safe levels and compliance with regulation. One particular class of these elemental impurities, the "Big 4" (arsenic, mercury, lead and cadmium), are of special concern because ingestion of quantity relatively low in food product can cause serious health issues, including - but not limited to - reproductive troubles, developmental disorder, brain damage, kidney and liver damage, and cancer. Given the serious health risks, a more stringent regulation is calling for the use of closed vessels digestion for sample preparation and inductively coupled plasma (ICP) for elemental impurities analysis as a replacement of obsolete and subjective methods of analysis based on colorimetric tests.

	In this application note, two frosting samples are digested simultaneously on a 15-position rack with a single temperature profile. In addition, setting the instrument is straightforward: a ramp time to target temperature and a hold time at target temperature.

	Frosting or icing products are delicate matrices to digest because they are made of significant amounts of carbohydrate and lipids, and thus are very exothermic during degradation. Digestion of the two varieties of frosting using a traditional microwave system would require two different runs and could possibly require two different rotors. Because of the exothermic nature of the sample, on a traditional microwave there is a limitation of the size of the sample that could be digested, since a relatively large sample size (>0.500 g) will generate a level of pressure that will cause the system to vent with loss of volatile elements.

	Samples were placed in a 15-position rack and lowered into the single reaction chamber. The chamber was pre-pressurized with nitrogen at 40 bar to raise the acids boiling point and thus prevent any cross-contamination and loss of volatiles due to boiling and spitting as the temperature increases inside the chamber.

	The two samples were fully digested as evidenced by the clear solutions obtained. The digestion lasted for less than 1 h including cooling time. The higher performance and greater ease of use make the UltraWAVE a good fit for a food company where samples of different types are common. Additionally, by using five position vials, samples as large as 2 g can be digested. Such capability not only addresses the common sample homogeneity concern of the food industry, but also gives the possibility to dilute samples with as much flexibility for ICP-OES as for ICP-MS.


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Author | Milestone Inc.

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