In situ methanation with flame ionization detection for the determination of carbon dioxide in various matrices,Analytical Methods

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In situ methanation with flame ionization detection for the determination of carbon dioxide in various matrices
Analytical Methods ( IF 2.7 ) Pub Date : 2018-02-14 00:00:00 , DOI: 10.1039/c8ay00079d
J. Luong _{1,

2,

3,

4,

5} , Y. Hua _{1,

2,

3} , R. Gras _{1,

2,

3,

4,

5} , M. Hawryluk _{1,

2,

3}

Affiliation

An analytical technique that employs in situ methanation with flame ionization detection for the measurement of carbon dioxide in various matrices has been developed and implemented. The methanation of carbon dioxide to methane is conducted in situ within the 3D printed jet of a flame ionization detector without any additional hardware required. Quantification of carbon dioxide at the parts-per-million level over the range of 1–10 000 ppm (v/v) with a respectable precision of less than 5% RSD (n = 10) was achieved. The total analysis time is less than 6 min. Linearity with a correlation coefficient of R² = 0.9995 and a measured recovery of >99% under the specified conditions were achieved. Leveraging the additional back pressure generated by the modified jet assembly, a novel strategy of post-column backflushing with the detector fuel gas was successfully innovated to provide advantageous synergy for enhanced reliability and throughput of the analytical system. This backflushing approach had no known negative impact on the conversion efficiency or performance of the jet assembly. The utility of this technique was demonstrated with relevant carbon dioxide applications in various sectors including the carbonated beverage, environmental, and chemical industries.

中文翻译：

原位甲烷化与火焰电离检测技术测定各种基质中的二氧化碳

已经开发并实施了一种分析技术，该技术采用原位甲烷化和火焰电离检测技术来测量各种基质中的二氧化碳。二氧化碳甲烷化成甲烷是在火焰电离检测器的3D打印射流中原位进行的，不需要任何其他硬件。在1–10000 ppm（v / v）范围内，以百万分之几的浓度对二氧化碳进行了定量，相对精度低于5％RSD（n = 10）。总分析时间少于6分钟。相关系数为R ^2的线性= 0.9995，在指定条件下测得的回收率> 99％。利用改进的喷头组件产生的额外背压，成功创新了使用检测器燃料气进行柱后反吹的新策略，从而为增强分析系统的可靠性和通量提供了有利的协同作用。这种反吹方法对喷头组件的转换效率或性能没有已知的负面影响。该技术的实用性已在二氧化碳的各种应用中得到了证明，包括碳酸饮料，环保和化学工业。

更新日期：2018-02-14

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