The potential distortion of sedimentary δ15N and Corg/N ratios by NH4+ and the effects of pre-analysis sample treatment

Meisel, Sandra; Struck, Ulrich

doi:10.1002/mmng.201100004

Cited by 6 publications

(5 citation statements)

References 36 publications

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“…However, the variation of POC / PON (variable coefficient, 0.47) in river waters is much smaller than POC (variable coefficient, 2.03) and PON (variable coefficient, 1.81). The value and variation of POC / PON (12.5 ± 5.8 with a variable coefficient of 0.47) in this study are much bigger than in previous studies (10.6 ± 2.3 with a variable coefficient of 0.21, Meybeck, 1982). The highest POC / PON ratio appeared in the Ipswich and Parker rivers (IPPR, 28.73 in Fig.…”

Section: River Watercontrasting

confidence: 74%

“…The elemental composition of organic matter affects the global biogeochemical cycle and varies depending on its sources (Devries and Deutsch, 2014). The carbon to nitrogen (C / N) ratio is affected by the life processes of organisms and is a good measure of the relationship between carbon and nitrogen cycles (Sterner and Elser, 2002;Schneider et al, 2003;Meisel and Struck, 2011;Babbin et al, 2014). Organic nitrogen originates from plant proteins and nucleic acids and, to a lesser extent, from lignin and cellulose.…”

Section: Introductionmentioning

confidence: 99%

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Variation pattern of particulate organic carbon and nitrogen in oceans and inland waters

et al. 2018

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Abstract. We examined the relationship between, and variations in, particulate organic carbon (POC) and particulate organic nitrogen (PON) based on previously acquired ocean and inland water data. The latitudinal dependency of POC ∕ PON is significant between 20 and 90∘ N but weak in low-latitude areas and in the Southern Hemisphere. The mean values of POC ∕ PON in the Southern Hemisphere and Northern Hemisphere were 7.40±3.83 and 7.80±3.92, respectively. High values of POC ∕ PON appeared between 80–90 (12.2±7.5) and 70–80∘ N (9.4±6.4), while relatively low POC ∕ PON was found from 20 (6.6±2.8) to 40∘ N (6.7±2.7). The latitudinal variation of POC ∕ PON in the Northern Hemisphere is much stronger than in the Southern Hemisphere due to the influence of more terrestrial organic matter. Higher POC and PON could be expected in coastal waters. POC ∕ PON growth ranged from 6.89±2.38 to 7.59±4.22 in the Northern Hemisphere, with an increasing rate of 0.0024 km from the coastal to open ocean. Variations of POC ∕ PON in lake water also showed a similar latitude-variation tendency of POC ∕ PON with ocean water but were significantly regulated by the lakes' morphology, trophic state and climate. Small lakes and high-latitude lakes prefer relatively high POC ∕ PON, and large lakes and low-latitude lakes tend to prefer low POC ∕ PON. The coupling relationship between POC and PON in oceans is much stronger than in inland waters. Variations in POC, PON and POC ∕ PON in inland waters should receive more attention due to the implications of these values for the global carbon and nitrogen cycles and the indeterminacy of the relationship between POC and PON.

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Section: River Watercontrasting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Variation pattern of particulate organic carbon and nitrogen in oceans and inland waters

et al. 2018

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“…The carbon to nitrogen (C/N) ratio affected by the life processes of organisms and is a good measure of the relationship between carbon and nitrogen cycles (Sterner and Elser, 2002;Schneider et al, 2003;Meisel and Struck, 2011;Babbin et al, 2014). Organic nitrogen originates from plant proteins and nucleic acids and, to a lesser extent, from lignin and cellulose.…”

Section: Introduction 30mentioning

confidence: 99%

Variation pattern of particulate organic carbon and nitrogen in oceans and inland waters

Huang¹,

Ye²,

Hao³

et al. 2017

Preprint

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“…Several other researchers have also found that the TN and δ 15 N TN values of HCl‐acidified marine, river and lake sediments were equal to or lower than those of untreated samples; the deviations in TN and δ 15 N TN values were up to 30% and 2.3‰, respectively (e.g., Fernandes and Krull 2008, Brodie et al . 2011b,c, Meisel and Struck 2011, Kim et al . 2016).…”

Section: Discussionmentioning

confidence: 99%

Pre‐treatment Methods for Accurate Determination of Total Nitrogen and Organic Carbon Contents and their Stable Isotopic Compositions: Re‐evaluation from Geological Reference Materials

Fujisaki

Matsui

Ueda

et al. 2021

Geostandard Geoanalytic Res

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This study reports total nitrogen (TN), carbon (TC) and organic carbon (TOC) contents, as well as stable isotopic ratios (δ15NTN, δ13CTC and δ13Corg), from marine, stream and lacustrine geological reference materials (JMs‐1, JMs‐2, SBC‐1, SCo‐2, JSd‐3, JSd‐4 and JLk‐1), which can be classified into two types; modern surface, and ancient, sediments. Using this newly obtained data set, we systematically investigated the biases of three pre‐treatment methods for nitrogen and carbon measurements: (1) non‐acidification (untreated method), (2) HCl acidification in various conditions and subsequent rinsing with high‐purity water repeatedly (rinse method) and (3) in situ acidification in a gold‐coated silver capsule (capsule method). Our results showed that such acid pre‐treatments can affect both nitrogen and carbon measurements, except for the carbon data of the ancient geological RMs. Therefore, the nitrogen analysis should be conducted using untreated samples while carbon data should be obtained using the capsule method for modern surface sediments and the rinse method (6 mol l‐1 HCl acidification at 70 °C) for ancient sediments. We believe that using appropriate pre‐treatment methods is crucial to deriving new interpretations of ancient/modern environmental processes and mechanisms in the future.

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The potential distortion of sedimentary δ15N and Corg/N ratios by NH4+ and the effects of pre-analysis sample treatment

Cited by 6 publications

References 36 publications

Variation pattern of particulate organic carbon and nitrogen in oceans and inland waters

Variation pattern of particulate organic carbon and nitrogen in oceans and inland waters

Variation pattern of particulate organic carbon and nitrogen in oceans and inland waters

Pre‐treatment Methods for Accurate Determination of Total Nitrogen and Organic Carbon Contents and their Stable Isotopic Compositions: Re‐evaluation from Geological Reference Materials

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