Sản Phẩm – Ứng Dụng – Công Ty TNHH Hoa Ý //ktea-fm.com Nhà Cung Cấp Thiết B?Phòng Thí Nghiệm Fri, 11 Nov 2022 09:43:07 +0000 vi hourly 1 //wordpress.org/?v=6.2.2 //ktea-fm.com/wp-content/uploads/2022/06/cropped-favicon-hoa-y-512x512-1-32x32.png Sản Phẩm – Ứng Dụng – Công Ty TNHH Hoa Ý //ktea-fm.com 32 32 Sản Phẩm – Ứng Dụng – Công Ty TNHH Hoa Ý //ktea-fm.com/san-pham-ung-dung/astm-d8001-16-kjeldahl-nitrogen-by-ic-including-total-phosphorus/ Tue, 12 Jul 2022 04:42:19 +0000 //demo.ktea-fm.com/?p=11605 ASTM D8001 – 16: Kieldahl nitrogen by IC ?including total phosphorus Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography.

ASTM D8001 - 16: Kjeldahl Nitrogen By Ic ?Including Total Phosphorus - Hoa Ý
Astm D8001 – 16: Kjeldahl Nitrogen By Ic ?Including Total Phosphorus

Traditional Kjeldahl nitrogen is determined by digesting the sample with sulfuric acid and titrating the released ammonium.

The new IC method uses alkaline persulfate for the digestion. Organic nitrogen will be converted to nitrate. In addition organic phosphorus coverts into phosphate. This allows to determine total nitrogen and total phosphorus in one run.

Results:

  • Total nitrogen (TN)
  • Total Kjeldahl nitrogen (TKN)
  • Total phosphorous (TP)

ASTM D8001 describes the digestion as well as the IC analysis. The standard can be performed applying the Metrosep A Supp 16 – 250/4.0 column. Example chromatograms are shown in the standard.

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