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Truspec chn analyzer

Manufactured by Leco

The TruSpec CHN analyzer is a laboratory instrument designed to determine the carbon, hydrogen, and nitrogen content of solid and liquid samples. It utilizes a combustion-based method to analyze the elemental composition of the sample. The TruSpec CHN analyzer provides accurate and reliable results for a wide range of materials, making it a versatile tool for various scientific and industrial applications.

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3 protocols using truspec chn analyzer

1

Root Morphology and Elemental Analysis

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The morphology of 15 roots (five plants, three primary roots per plant) was analyzed by hand cross-sectioning into ≈15 mm segments at the middle of the root using a vibratome (Leica VT 1200 S, Germany) and observed under confocal laser scanning microscopy. For elemental analysis plants were separated into roots and shoots, rinsed and cleaned three times in 0.5 mM CaCl2 to remove traces of growth medium from surfaces. Tissues were dried at 60 °C for five days, weighed, homogenized and analyzed for elemental content. Nitrogen and carbon were determined by combustion (TruSpec CHN analyzer, LECO, MI). Results represent averages of 10 plants. All growth experiments were repeated three times.
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2

Biomass Elemental Composition Analysis

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The carbon (C), hydrogen (H), and nitrogen (N) content in biomass, solid residues, and bio-oil were assessed by a LECO TruSpec CHN analyzer, whilst a LECO CNS2000 analyzer determined sulfur (S) content.
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3

Soil Decomposition Analysis Protocol

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The total carbon and total nitrogen content of the initial and decomposed samples was determined by combustion at 650 • C using an elemental LECO TruSpec CHN-analyzer. For the incubated samples, one bag per plot for each material was randomly selected and the content was ground as described above for the fibre analysis. The total C and N analysis was performed in triplicates (ca. 100 mg of ground samples per replicate). A multipoint standard calibration of the instrument was performed using set-up standards recommended by the manufacturer (LECO, USA) prior to the analysis of the granulated biogas residue and rooibos tea samples. The remaining absolute amounts of total carbon and nitrogen after decomposition were calculated on a DM basis and expressed as a percentage of the initial total carbon and nitrogen content of the unexposed material according to Eq. ( 5):
where %R E is the relative residual element (total carbon or total nitrogen) as a percentage of the element initially contained in the nonincubated material, D E is the remaining mass of the element after decomposition in the soil, and I E is the initial mass of the element contained in the unexposed material (Table 3).
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