Comparison of Methods to Quantify Organic Carbon in Soil Samples from São Paulo State, Brazil
| العنوان: | Comparison of Methods to Quantify Organic Carbon in Soil Samples from São Paulo State, Brazil |
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| المؤلفون: | Jorge Paz-Ferreiro, Antonio Paz González, Rosane da Silva Dias, Mônica Ferreira de Abreu, Edson Eiji Matsura, Cleide Aparecida de Abreu |
| المصدر: | Communications in Soil Science and Plant Analysis. 44:429-439 |
| بيانات النشر: | Informa UK Limited, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Total organic carbon, Soil test, Chemistry, Environmental chemistry, Soil water, Soil Science, chemistry.chemical_element, Gravimetric analysis, Soil carbon, Muffle furnace, Agronomy and Crop Science, Soil quality, Carbon |
| الوصف: | Soil carbon (C) determinations are important for soil quality assessment. The standard method that is used in Sao Paulo state to determine soil organic C is a modified Walkely–Black method. This method has some disadvantages because of the time needed for implementation and the use of potassium dichromate. Therefore, the aims of this work were to test the efficiency and compare the following methods: (a) wet oxidation of organic C (OC-HO) followed by spectrophotometer determination, (b) dry incineration at 550 °C with a muffle furnace plus gravimetric determination (TC-I), and (c) dry combustion with a C–nitrogen (N)–sulfur (S) elemental analyzer (TC-EA). Sixty-one soil samples were collected at the 0- to 20-cm depth on agricultural soils of Sao Paulo state. Samples were dried at 65 °C, ground, and sieved through a 0.09-mm sieve. Carbon content was determined in triplicate. These sets of samples exhibited a wide range of C content: TC-EA was from 0.43 to 9.14 g 100 g−1. Mean C contents were 6.76 g 100 g−1... |
| تدمد: | 1532-2416 0010-3624 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::a0070456a7c1b9a0af64a9fa05d7bc8e https://doi.org/10.1080/00103624.2013.742345 |
| رقم الأكسشن: | edsair.doi...........a0070456a7c1b9a0af64a9fa05d7bc8e |
| قاعدة البيانات: | OpenAIRE |
PDF full text from Publisher | تدمد: | 15322416 00103624 |
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