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在土壤和沉积物中量化有机碳总量:修改样本制备方法的性能测试

Moritz Nykamp¹, Fabian Becker¹, Philipp Hoelzmann¹

¹Freie Universität Berlin, Institute of Geographical Sciences, Malteserstr. 74-100, 12249 Berlin, Germany.

|September 17, 2024

概括

一种经过修改的方法准确地测量了悬浮颗粒中的总有机碳 (TOC). 这种具有成本效益的方法对土壤和沉积物是可靠的,为TOC分析提供了一个环保的替代方案.

科学领域:

环境科学环境科学
分析化学分析化学
地质化学地质化学

背景情况:

总有机碳 (TOC) 对于表征土壤和沉积物至关重要.
在悬浮颗粒样本中精确的TOC测量对于环境监测和地质研究至关重要.
现有的方法可能在效率,成本或适用于各种样本矩阵方面存在局限性.

研究的目的:

为了验证一种修改的样品制备方法,用于在悬浮颗粒样本中直接测量总有机碳 (TOC).
在各种认证参考材料 (CRM) 中评估方法的准确性和精度.
突出该方法的成本效益和环境效益.

主要方法:

对五种具有不同TOC度的认证参考材料 (CRM) 的分析.
使用Shimadzu TOC-L CPH分析仪进行TOC直接测量.
采用多点校准曲线和统计验证措施.

主要成果:

经过修改的方法证明了海洋和土壤CRM的准确和精确的TOC测量.
对于含有多环芳 (PAH) 的CRM,观察到的精度较低.
该方法在悬浮颗粒样本中直接确定TOC的可靠性.

结论:

修改后的制备方法适用于在悬浮颗粒样本中直接确定TOC,并且可靠.
这种经济高效且环保的方法为TOC分析提供了替代方案.
该方法的相关性超越了地质科学,并扩展到各种TOC分析器的用户.

关键词:

一种修改后的制备方法,用于在悬浮颗粒样本中确定TOC.经过认证的参考材料.直接TOC的决定TOC的决定方法验证方法的验证方法.样品悬浮液的制备方法悬浮颗粒物样本的悬浮颗粒物样本

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