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Details van artikel 8 van 17 gevonden artikelen
| Titel: |
Evaluation of an aluminum digestion block for routine total soil phosphorus determination by alkaline hypobromite oxidation |
| Auteur: |
Cihacek, L. J. Lizotte, D. A. |
| Verschenen in: |
Communications in soil science and plant analysis |
| Paginering: | Jaargang 21 (1990) nr. 19-20 pagina's 2361-2370 |
| Jaar: |
1990-12 |
| Inhoud: |
Total soil P was determined in six soils differing in pH, and in organic matter, total Fe, clay and sand contents. This study was undertaken to determine whether replacement of a sand bath.digestion procedure by an Al-block digestion procedure affected the efficacy of an alkaline NaOBr method for determining total soil P. An Al digestion block was used for soil oxidation with NaOBr-NaOH and the results were compared with a sand bath NaOBr method and a HC1O4 method. Temperature variability was very low in the digestion block (S.D.= ±1.4°C) when compared with the sand bath (S.D.= +20.1°C). The digestion block resulted in a greater precision in total P determination when compared to the sand bath (S.D.= ±3.7 vs. ±5.6, respectively). Linear relationships were obtained with the sand bath digestion technique (R2 = 0.981) and with the HC1O4 method (R2 = 0.982). Using an Al digestion block for NaOBr-NaOH oxidation of soils for total P determination allows for a simple, precise alternative to sand bath digestion and to potentially hazardous HClO4 procedures. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 8 van 17 gevonden artikelen
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