The DOI matches its Crossref record.
A Simple Digestion Procedure for Estimation of Total Nitrogen in Soils and Sediments
Abstract
A simple and convenient digestion procedure for total N analysis of soils and sediments is described. The digestion is carried out in pyrex Folin‐Wu tubes heated in an aluminum block placed on a hot plate. Samples up to 1 g in size may be used and a digestion time of 3 hours after clearing is adequate. The proposed and conventional semimicro‐Kjeldahl methods gave essentially the same values for total N in a wide variety of soils and sediments. The precision of the proposed method was almost as good as those reported for other semimicro‐Kjeldahl methods. The tube digestion method allows simultaneous digestion of 60 samples in a relatively inexpensive and maintenance‐free aluminum heating block, which occupies a minimum of laboratory space and appears applicable for routine determination of total N in soils having diverse properties.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Bremner, J. M., & Mulvaney, C. S. (1982) · Agronomy Monographs · doi:10.2134/agronmonogr9.2.2ed.c31 · Cited by 3,264
Bremner, J. M. (1996) · SSSA Book Series · doi:10.2136/sssabookser5.3.c37 · Cited by 1,008
Dick, R. P., Rasmussen, P. E., & Kerle, E. A. (1988) · Biology and Fertility of Soils · doi:10.1007/bf00257667 · Cited by 340
Differentiating microbial and stabilized β-glucosidase activity relative to soil quality
Knight, T. R., & Dick, R. P. (2004) · Soil Biology and Biochemistry · doi:10.1016/j.soilbio.2004.06.007 · Cited by 196
Durumin Iya, N. I., Assim, Z. B., Omorinoye, O. A., & Asare, E. A. (2022) · Dutse Journal of Pure and Applied Sciences · doi:10.4314/dujopas.v8i2a.18 · Cited by 2
Metadata
- Authors
- Nelson, D. W., & Sommers, L. E.
- Venue
- Journal of Environmental Quality
- Publisher
- Wiley
- Published
- 1972-10
- Volume
- 1
- Issue
- 4
- Pages
- 423-425
- ISSN
- 0047-2425 (ISSN-L)
- 1537-2537
- OpenAlex
- W2063459033
- Cited by
- 244
- References
- 0
- FWCI
- 2.88
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: A Simple Digestion Procedure for Estimation of Total Nitrogen in Soils and Sediments. https://app.cochat.ai/papers/10.2134/jeq1972.00472425000100040020x
- The paper
- Nelson, D. W., & Sommers, L. E. (1972). A Simple Digestion Procedure for Estimation of Total Nitrogen in Soils and Sediments. Journal of Environmental Quality. https://doi.org/10.2134/jeq1972.00472425000100040020x
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
