Measurement of SF6 using gc-ecd: a comparative study on the utilization of CO2-N2 mixture and CH4-ar mixture as a make-up gas

Zuas, Oman; Budiman, Harry; Hamim, Nuryatini

doi:10.23939/chcht11.04.420

Cited by 4 publications

(6 citation statements)

References 23 publications

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“…Intraday precision of the method was observed by seven times injecting the SGM-1 under optimized GC-TCD, while interday precision was observed using the same procedure in different days (Zuas, Budiman & Hamim 2017). The percentage of relative standard deviation (%RSD) obtained from the repetitions was then compared with the coeffi cient of variance (CV) Horwitz.…”

Section: Methodsmentioning

confidence: 99%

“…The peak area of the SGM-2's chromatogram was compared with SGM-1's to determine the measured value of target components in the SGM-1's. The difference between the gravimetric concentrations of each component (See Table 1) and the measured values were then calculated in order to determine bias of the method (Zuas, Budiman & Hamim 2017). This bias value can be compared with the method uncertainty, which was combined from standard deviation and the SGM's certifi ed uncertainty (Budiman & Zuas 2015).…”

Section: Methodsmentioning

confidence: 99%

“…For the linearity, SGM-1 was dynamically diluted to seven point of concentration and injected to the GC-TCD under optimized condition by using the same procedure as in intraday precision. This was done to obtain the calibration curve and correlation coefficient (R 2 ) which is required for assessing of method linearity (Zuas, Budiman & Hamim 2017). Moreover, the chromatogram resulted from the injection of SGM-1's dilution with the lowest concentration point was also used to determine LoD and LoQ of the method.…”

Section: Methodsmentioning

confidence: 99%

“…An Agilent 7890B gas chromatography system equipped with thermal conductivity detector (GC-TCD) (Agilent Technologies, USA) was used for the simultaneous measurement of H 2 , CO 2 , CH 4 , and CO concentration (Zuas, Budiman & Hamim 2017). To separate each component from their mixture, the GC was equipped with a 9 feet x 1/8 inch x 2.0 mm SS Molecular Sieve 5A packed column, (Restek, USA) connected in series with a 6 feet x 1/8 inch x 2.0 mm SS Porapak Q packed column (Restek, USA).…”

Section: B Instrumentmentioning

confidence: 99%

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Simultaneous Measurement of Syn-Gas Component (H2, Co2, Ch4, and Co) as Product of Biomass Gasification by Using Validated Gc-TCD Method

Mulyana

Zuas

Budiman

et al. 2018

SCOG

Self Cite

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Biomass gasification has been widely known method to produce syn-gases, which can be considered as great alternative substitution for fossil fuels. However, accurate verification of the syn-gas composition requires a reliable and validated method for simultaneous measurement of H2, CO2, CH4, and CO. In order to fulfill the aforementioned requirements, which is the objective of this study; a GC-TCD method for simultaneous measurement of H2, CO2, CH4, and CO component in syn-gas has been validated in accordance to ISO/IEC 17025 and its application for real samples. For the method validation purpose, all of the performance parameters were evaluated and discussed in detail in this study. Intraday precision and interday precision were found to be acceptable having the %RSD below 0.67xCV Horwitz and below 1.0xCV Horwitz, respectively. The bias value falls within +2? for entire components, indicating that the method accuracy can be accepted. Coefficient correlation for all components was higher than 0.99, which means that the method has suffi cient linearity. LoD and LoQ for each component were found to be lower than typical syn-gas concentration range. The method roughness was also found in an acceptable level (the p-values was higher than 0.05 for allctarget components. Application of the validated method for the measurement of a real syn-gas samples indicated that the method is quite reliable to produce an accurate data and the validated methid can be used in a routine analysis. The innovation of this study, as shown by experiment results, is to evaluate the validated methods performance for simultaneous determination of syn-gas components concentration in one channel, compared to common method in which the syn-gas components were measured separatedly in a different channel.Biomass gasifi cation has been widely known method to produce syn-gases, which can be consideredas great alternative substitution for fossil fuels. However, accurate verifi cation of the syn-gas compositionrequires a reliable and validated method for simultaneous measurement of H2, CO2, CH4, and CO. Inorder to fulfi ll the aforementioned requirements, which is the objective of this study; a GC-TCD methodfor simultaneous measurement of H2, CO2, CH4, and CO component in syn-gas has been validated inaccordance to ISO/IEC 17025 and its application for real samples. For the method validation purpose,all of the performance parameters were evaluated and discussed in detail in this study. Intraday precisionand interday precision were found to be acceptable having the %RSD below 0.67xCV Horwitz and below1.0xCV Horwitz, respectively. The bias value falls within +2? for entire components, indicating that themethod accuracy can be accepted. Coeffi cient correlation for all components was higher than 0.99, whichmeans that the method has suffi cient linearity. LoD and LoQ for each component were found to be lowerthan typical syn-gas concentration range. The method roughness was also found in an acceptable level(the p-values was higher than 0.05 for allctarget components. Application of the validated method for themeasurement of a real syn-gas samples indicated that the method is quite reliable to produce an accuratedata and the validated methid can be used in a routine analysis. The innovation of this study, as shown byexperiment results, is to evaluate the validated methods performance for simultaneous determination ofsyn-gas components concentration in one channel, compared to common method in which the syn-gascomponents were measured separatedly in a different channel.Keywords: syn-gas, GC-TCD, method validation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: B Instrumentmentioning

confidence: 99%

See 2 more Smart Citations

Simultaneous Measurement of Syn-Gas Component (H2, Co2, Ch4, and Co) as Product of Biomass Gasification by Using Validated Gc-TCD Method

Mulyana

Zuas

Budiman

et al. 2018

SCOG

Self Cite

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“…However, CRMs are limited, high cost, and could not cover the large type of samples. Internal reference materials developed by a laboratory for its internal use have been produced in enabling CRM's to be used on a less frequent basis and reducing measurement cost [3], [4]. The internal reference material might be upgraded to a national reference material after analyzed by other certified laboratories and guaranteed by the country's agency.…”

Section: Introductionmentioning

confidence: 99%

Rare Earth Oxides-Containing Internal Reference Material of Purified Monazite from Bangka Island

Irzon¹,

Haryanto

Miharja³

2023

Majalah Ilmiah Pengkajian Industri

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Monazite mineral contains a sufficient composition of rare earth elements which are currently required widely in modern industries. Reference materials are needed to validate the measurement results, including the rare earth elements analysis. This study presents the processing of purified monazite from the PT Timah Metallurgical Unit in Muntok to become low-cost and rare earth oxides-containing internal reference material. Eight X-ray fluorescence measurements of four splits of the monazite were done for precision test and to establish its information values. The high CeO2 and LaO2 composition (>10%) implies the economic worth of the studied sample. Based on the acceptance criteria of RSDexperimental <10%, RSDexperimental ?66%xCVHorwitz, and Horrat <2, the concentration of fourteen analytes is acceptable to be set as information values. The studied monazite content resembles the other purified one of Myanmar. Its much lower phosphate composition signifies that the sample is more precious than refined monazites from Iran and Australia. Keyword: Monazite, Internal reference material, XRF, REE.

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GC with FI and PDHI detection for trace impurity analysis in bulk gases: a comparative evaluation

Zuas

Mulyana

Budiman

2019

J. Phys.: Conf. Ser.

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Measurement of SF6 using gc-ecd: a comparative study on the utilization of CO2-N2 mixture and CH4-ar mixture as a make-up gas

Cited by 4 publications

References 23 publications

Simultaneous Measurement of Syn-Gas Component (H2, Co2, Ch4, and Co) as Product of Biomass Gasification by Using Validated Gc-TCD Method

Simultaneous Measurement of Syn-Gas Component (H2, Co2, Ch4, and Co) as Product of Biomass Gasification by Using Validated Gc-TCD Method

Rare Earth Oxides-Containing Internal Reference Material of Purified Monazite from Bangka Island

GC with FI and PDHI detection for trace impurity analysis in bulk gases: a comparative evaluation

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