Laboratory Products

New ASTM Method Simplifies Determination of Kjeldahl Nitrogen

Oct 09 2017 Read 484 Times

The ASTM recently published method D8001 describing the determination of total nitrogen, total Kjeldahl nitrogen, and total phosphorous. The new method applies persulfate digestion with subsequent determination of Kjeldahl nitrogen by ion chromatography; no prior distillation of the matrix is required.

Total Kjeldahl and total nitrogen are commonly determined by titration after distillation of the digestion mixture to release the ammonia. The new ASTM D8001 offers an alternative applying persulfate digestion followed by ion chromatographic separation and conductivity detection with sequential suppression.

The new method is described by Metrohm Application Noe S-358 which can be downloaded free of charge.

Read comments0

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Digital Edition

Labmate UK & Ireland July

July 2018

In This Edition Articles - Why Does Nanotechnology Require Mass Spectrometry Spotlight Features Luminescence, UV & Microplate Readers - New Confocal Laser Scanning Microscope Combine...

View all digital editions


AACC Annual Meeting & Clinical Lab Expo 2018

Jul 29 2018 Chicago, IL, USA

HPLC 2018

Jul 29 2018 Washington DC, USA

M&M 2018

Aug 05 2018 Baltimore, MD, USA

DXC 2018

Aug 06 2018 Westminster, CO, USA

Food Science 2018

Aug 06 2018 Berlin, Germany

View all events