Total organic carbon/total nitrogen analyzer

申请资金购买“总有机碳/总氮（TOC/TN）分析仪”。所要求的仪器是基于燃烧的总有机/无机碳和总氮分析仪，配有自动进样器。TOC/TN分析仪的目的是支持消失和动力学速率模型的发展，监测废水中母体污染物及其中间体的降解，以及优化工业和城市污水处理的光化学和生物联合工艺。TOC/TN分析仪的主要用途是通过测定光化学和生物反应过程中利用的总有机碳和总氮的可靠数据来确定光化学和生物降解率。经过高级氧化技术和生物工艺处理的工业废水中的母质化合物可能会消失，而系统中仍存在许多其他有机和无机化合物。这是由于中间体是这些反应的结果。多组分体系的动力学建模不仅复杂，而且如果不考虑反应过程中的所有中间体，则可能不准确。由于生物需氧量（BOD）、化学氧化需氧量（COD）和其他特定化合物消失的局限性和缺点，通常难以为每个样品生成足够可靠的数据点，以进行良好的动力学参数估计。因此，有机/无机碳和氮的总平衡是建立多组分城市和工业废水降解速率模型的必要条件。此外，所要求的仪器在共同申请者的研究计划中有价值，用于监测废水处理和生物固体修复过程中发生的反应过程中的总有机碳和总氮。因此，TOC/TN分析仪是这些研究项目的关键设备。

Funds are requested to purchase a "total organic carbon/total nitrogen (TOC/TN) analyzer". The requested instrument is combustion based total organic/inorganic carbon as well as total nitrogen analyzer which is equipped with an auto-sampler. The requested TOC/TN analyzer is to support the development of disappearance and kinetic rate models, monitoring degradation of parent pollutants and their intermediates in wastewater, and the optimization of combined photochemical and biological processes for industrial and municipal wastewater treatment. The primary use of the TOC/TN analyzer is to determine the photochemical and biological degradation rates by determining the reliable data for total organic carbon and total nitrogen utilized during the course of both photochemical and biological reactions. Parent compounds in industrial wastewater treated by advanced oxidation technologies and biological processes may disappear while there are still many other organic and inorganic compounds present in the system. This is due to the fact that intermediates are generated as a result of these reactions. The kinetic modeling of multicomponent systems is not only complicated but also it may not be accurate if all intermediates during the course of reactions are not taken into account. Due to the limitations and drawbacks of biological oxygen demand (BOD), chemical oxidation demand (COD), and other specific compound disappearance, it is generally difficult to generate enough reliable data points per sample for good kinetic parameter estimation. Therefore, the total organic/inorganic carbon and nitrogen balances are necessary in developing the degradation rate modeling of multicomponent municipal and industrial wastewaters. Furthermore, the requested instrument is valuable in the co-applicants' research programs to monitor total organic carbon and total nitrogen during the course of reactions that take place in wastewater treatment as well as biosolids remediation. Consequently, the TOC/TN analyzer is a key and critical piece of equipment for these research programs.