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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
Organization:
ASTM - ASTM International
Year: 2024
Abstract: 5.1 This test method allows the simultaneous determination of total nitrogen and total phosphorous from one sample digestion step. 5.2 This test method measures oxidized ammonia and organic nitrogen (as nitrate) and soluble nitrate simultaneously. By subtracting the nitrate + nitrite value from a non-digested sample gives a TKN: When using this test method: where: TN = total nitrogen, and TKN = total Kjeldahl nitrogen.
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Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
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| contributor author | ASTM - ASTM International | |
| date accessioned | 2025-09-30T18:03:22Z | |
| date available | 2025-09-30T18:03:22Z | |
| date copyright | 2024 | |
| date issued | 2024 | |
| identifier other | d8001-16r24.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/341919 | |
| description abstract | 5.1 This test method allows the simultaneous determination of total nitrogen and total phosphorous from one sample digestion step. 5.2 This test method measures oxidized ammonia and organic nitrogen (as nitrate) and soluble nitrate simultaneously. By subtracting the nitrate + nitrite value from a non-digested sample gives a TKN: When using this test method: where: TN = total nitrogen, and TKN = total Kjeldahl nitrogen. | |
| language | English | |
| title | Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography | en |
| title | ASTM D8001-16 | num |
| type | standard | |
| status | Active | |
| tree | ASTM - ASTM International:;2024 | |
| contenttype | fulltext | |
| scope | 1.1 This test method is applicable for the analysis total nitrogen (organic nitrogen + ammonia-N + nitrate-N + nitrite-N) as nitrate and total phosphorus as orthophosphate in unfiltered water samples by alkaline persulfate digestion followed by ion chromatography (IC). 1.2 Total Kjeldahl nitrogen (TKN) is determined by the calculation. To determine TKN subtract the nitrate-N and nitrite-N in a digested sample from a non-digested sample (see Section 4, Summary of Test Method). 1.3 The limit of detection (LOD), limit of quantitation (LOQ), and reporting range in Table 1 are based on the two-step process for this test method: digestion and analytical step. Because the digestion step requires a sample dilution, the LOD and LOQ are higher than undigested samples. The reporting range, LOD, and LOQ can be modified and perhaps improved depending on several factors (see Section 6, Interferences). | |
| identifier DOI | 10.1520/D8001-16R24 |