TKN determination in water and waste water using potentiometric titration
Determination of TKN (Total Kjeldahl Nitrogen) in water and waste water according to the Kjeldahl method using potentiometric titration
An easy, reliable and high troughpout method for the determination of Total Kjeldahl Nitrogen (TKN) in water and waste water, according to ISO 5663, DIN EN 25 663 and the methods listed in 40 CFR part 136.3, is presented. In this study, the Limit of Detection and Limit of Quantification, which are a benchmark for the method’s sensitivity, were determined for water samples. To test the system’s performance, the nitrogen recovery of different concentrations of a urea reference sample was tested. The samples were digested mercury and selenium free using the KjelDigester K-449. The distillation and potentiometric boric acid titration were performed with the KjelMaster K-375 with KjelSampler K-376.
ダウンロード登録
関連製品
KjelMaster K-375 (ケルマスター) と KjelSampler K-376 / K-377 （ケルサンプラー）
KjelMaster K-375なら、メソッドを自由に選択して電位差滴定や比色滴定ができるので、完璧なユーザビリティーが実現します。窒素やタンパク質の分析に便利な高い検体処理数、自動化、高度なデータ管理を実現します。
ケルダール分解器 K-446 / K-449（ケルダイジェスター）
KjelDigester K-446 / K-449（ケルダール分解器）は、分解プロセスを最大2時間短縮し、高い安全性基準を満たします。KjelMaster Systemに完全にマッチし、1日あたりの検体処理数が向上します。
