着火损失
碳酸盐
总有机碳
有机质
碳纤维
环境化学
无机碳总量
矿物学
沉积物
化学
环境科学
地质学
二氧化碳
材料科学
有机化学
复合数
古生物学
复合材料
作者
Juan I. Santisteban,Rosa María Mediavilla López,Enrique López-Pamo,Cristino J. Dabrio,María Blanca Ruiz Zapata,María José Gil-García,Silvino Castaño Castaño,Pedro E. Martínez-Alfaro
标识
DOI:10.1023/b:jopl.0000042999.30131.5b
摘要
Since the publication of the paper of , loss on ignition (LOI) has been widely used as a method to estimate the amount of organic matter and carbonate mineral content (and indirectly of organic and inorganic carbon) in sediments. The relationships between LOI at 550 °C (LOI550) and organic carbon (OC) content and between LOI at 950 °C (LOI950) and inorganic carbon (IC) content are currently accepted as a standard. However, the comparison of 150 analyses of samples of diverse lithologies, collected from a single core, reveals that these relationships are affected by sediment composition (presence of clays, salts, and the variable content of organic carbon). This results in an incremental error on the estimation of carbon content from LOI values that invalidates the use of LOI values as a quantitative method for estimating carbon content. Conversely, the general trends of LOI550 and LOI950 show a good correlation with carbon content (both organic and inorganic) allowing use of LOI as a qualitative test for carbon content. Similarly, in our case, LOI at 105 °C (LOI105) is a good qualitative proxy for the trends in gypsum content.
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