Laboratory Products

New ASTM Method Simplifies Determination of Kjeldahl Nitrogen

Oct 09 2017 Comments 0

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 October / November 2017

November 2017

In this Issue Articles - How to Achieve Ultimate PCR Optimisation Spotlight Features - Incubators, Freezers & Cooling Equipment - Balances & Strain Gauges - Proteomics, Genomics & Mic...

View all digital editions

Events

HTC-15

Jan 24 2018 Cardiff, UK

Arab Health

Jan 29 2018 Dubai International Convention & Exhibition Centre

SLAS 2018

Feb 03 2018 San Diego, CA USA

MEDLAB MIDDLE EAST

Feb 05 2018 Dubai, UAE

IFPAC Annual Meeting

Feb 11 2018 Maryland, (Washington DC), USA

View all events