http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Final report on international key comparison APMP.QM-K41: 10 µmol/mol hydrogen sulfide in nitrogen
Kim, Yong-Doo,Heo, Gwi-Suk,Lee, Sangil,Han, Qiao,Wu, Hai,Konopelko, Leonid A,Kustikov, Yury A,Malginov, Andrey V,Gromova, Elena V,Pankratov, Vladimir V,Pavlov, Mikhai V,Botha, Angelique Springer-Verlag 2014 METROLOGIA -BERLIN- Vol.51 No.-
<P>This report presents the results of APMP.QM-K41, a key comparison. This comparison is designed to test the capabilities of the NMIs to measure and certify hydrogen sulfide at a nominal amount fraction of 10 µmol/mol in nitrogen. This comparison provides an opportunity to the NMIs in APMP to submit supporting evidence for CMC at the same level as CCQM-K41. The results from this comparison are linked with CCQM-K41.</P><P>Main text.To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.</P><P>The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).</P>
International key comparison CCQM-K94: 10 μmol/mol dimethyl sulfide in nitrogen
Lee, S,Heo, G S,Kim, Y,Oh, S,Han, Q,Wu, H,Konopelko, L A,Kustikov, Y A,Kolobova, A V,Efremova, O V,Pankratov, V V,Pavlov, M V,Culleton, L P,Brown, A S,Brookes, C,Li, J,Ziel, P R,van der Veen, A M H IOP 2016 Metrologia Vol.53 No.-
<P></P> <P>Dimethyl sulfide (DMS) is an important compound in monitoring climate change and is monitored by the World Meteorological Organization Global Atmospheric Watch Volatile Organic Compounds (WMO-GAW VOC) program at several monitoring sites. It is essential that measurement results are accurate and consistent among the assigned values for primary gas mixtures to meet the WMO requirement. The purpose of this comparison is to compare the measurement capability of DMS at approximately 10 μmol/mol and expectation to contribute the establishment of traceability to single measurement scale for DMS between NMIs.</P> <H2>Main text</H2> <P>To reach the main text of this paper, click on <A HREF='http://www.bipm.org/utils/common/pdf/final_reports/QM/K94/CCQM-K94_Final_Report.pdf'>Final Report</A>. Note that this text is that which appears in Appendix B of the BIPM key comparison database <A HREF='http://kcdb.bipm.org/'>kcdb.bipm.org/</A>.</P> <P>The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).</P>
International comparison CCQM-K82: methane in air at ambient level (1800 to 2200) nmol/mol
Flores, Edgar,Viallon, Joë,le,Choteau, Tiphaine,Moussay, Philippe,I Wielgosz, Robert,Kang, Namgoo,Moon Kim, Byung,Zalewska, Ewelina,(A M H) van der Veen, Adriaan,Konopelko, Leonid,Wu, Hai,Han, Qia IOP 2015 Metrologia Vol.52 No.-
<P>The CCQM-K82 comparison was designed to evaluate the degrees of equivalence of NMI capabilities for methane in air primary reference mixtures in the range (1800 to 2200) nmol/mol. The balance gas for the standards was either scrubbed dry real air or synthetic air.</P> <P> CH<SUB>4</SUB> in air standards have been produced by a number of laboratories for many years, with more recent developments focused on standards at atmospheric measurement concentrations and aimed at obtaining agreement between independently produced standards. A comparison of the differences in primary gas standards for methane in air was previously performed in 2003 (CCQM-P41 Greenhouse gases. 1 and 2) with a standard deviation of results around the reference value of 30 nmol/mol and 10 nmol/mol for a more limited set of standards. This can be contrasted with the level of agreement required from field laboratories routinely measuring atmospheric methane levels, set by Data Quality Objectives (DQO) established by the World Meteorological Organization (WMO) to reflect the scientifically desirable level of compatibility for CH<SUB>4</SUB> measurements at the global scale, currently set at 2 nmol/mol (1 sigma).</P> <P> The measurements of this key comparison took place from May 2012 to June 2012.</P> <P> Eight laboratories took part in this comparison coordinated by the BIPM and NIST. Key comparison reference values were calculated based on Cavity Ring Down Spectroscopy Measurements performed at the BIPM, combined with participant's gravimetric values to identify a consistent set of standards. Regression analysis allowed predicted values for each standard to be calculated which acted as the KCRVs. In this comparison reported standard uncertainties by participants ranged from 0.50 nmol/mol to 2.4 nmol/mol and the uncertainties of individual KCRVs ranged from 0.68 nmol/mol to 0.71 nmol/mol.</P> <P> The standard deviation of the ensemble of standards about the KCRV value was 1.70 nmol/mol. This represents a greater than tenfold improvement in the level of compatibility of methane in air standards compared to that demonstrated in 2003. Further improvements in the compatibility of standards will require improved methods and uncertainties for the measurement of trace level methane in balance gases. </P> <P><B>Main text.</B> To reach the main text of this paper, click on <A HREF='http://www.bipm.org/utils/common/pdf/final_reports/QM/K82/CCQM-K82.pdf'>Final Report</A>. Note that this text is that which appears in Appendix B of the BIPM key comparison database <A HREF='http://kcdb.bipm.org/'>kcdb.bipm.org/</A>.</P> <P>The final report has been peer-reviewed and approved for publication by CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).</P>
International comparison CCQM-K113-noble gas mixture
Lim, Jeong Sik,Lee, Jinbok,Moon, Dongmin,Tshilongo, James,Qiao, Han,Shuguo, Hu,Tiqiang, Zhang,Kelley, Michael E,Rhoderick, George C,Konopelko, L A,Kolobova, A V,Vasserman, I I,Zavyalov, S V,Gromova, E BUREAU INTERNATIONAL DES POIDS ET MESURES 2017 METROLOGIA -BERLIN- Vol.54 No.1
CCQM-K120 (Carbon dioxide at background and urban level)
Flores, Edgar,Viallon, Joë,le,Choteau, Tiphaine,Moussay, Philippe,Idrees, Faraz,Wielgosz, Robert I,Lee, Jeongsoon,Zalewska, Ewelina,Nieuwenkamp, Gerard,Veen, Adriaan van der,Konopelko, L A,Kustiko BUREAU INTERNATIONAL DES POIDS ET MESURES 2019 METROLOGIA -BERLIN- Vol.56 No.-
<P></P> <P>CCQM-K120.a comparison involves preparing standards of carbon dioxide in air which are fit for purpose for the atmospheric monitoring community, with stringent requirements on matrix composition and measurement uncertainty of the CO<SUB>2</SUB> mole fraction. This represents an analytical challenge and is therefore considered as a Track C comparison. The comparison will underpin CMC claims for CO<SUB>2</SUB> in air for standards and calibrations services for the atmospheric monitoring community, matrix matched to real air, over the mole fraction range of 250 μmol/mol to 520 μmol/mol.</P> <P>CCQM-K120.b comparison tests core skills and competencies required in gravimetric preparation, analytical certification and purity analysis. It is considered as a Track A comparison. It will underpin CO<SUB>2</SUB> in air and nitrogen claims in a mole fraction range starting at the smallest participant's reported expanded uncertainty and ending at 500 mmol/mol. Participants successful in this comparison may use their result in the flexible scheme and underpin claims for all core mixtures</P> <P>This study has involved a comparison at the BIPM of a suite of 44 gas standards prepared by each of the participating laboratories. Fourteen laboratories took part in both comparisons (CCQM-K120.a, CCQM-K120.b) and just one solely in the CCQM-K120.b comparison.</P> <P>The standards were sent to the BIPM where the comparison measurements were performed. Two measurement methods were used to compare the standards, to ensure no measurement method dependant bias: GC-FID and FTIR spectroscopic analysis corrected for isotopic variation in the CO<SUB>2</SUB> gases, measured at the BIPM using absorption laser spectroscopy. Following the advice of the CCQM Gas Analysis Working Group, results from the FTIR method were used to calculate the key comparison reference values.</P> <P>KEY WORDS FOR SEARCH</P> <P>FTIR, CO2, GC-FID, Carbon dioxide at background level, Carbon dioxide at urban level, Delta Ray, CO2 gas standards</P> <P></P> <H2>Main text</H2> <P> To reach the main text of this paper, click on <A HREF='https://www.bipm.org/utils/common/pdf/final_reports/QM/K120/CCQM-K120.pdf'>Final Report</A>. Note that this text is that which appears in Appendix B of the BIPM key comparison database <A HREF='http://kcdb.bipm.org/'>kcdb.bipm.org/</A>.</P> <P>The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).</P>
CCQM-K90, formaldehyde in nitrogen, 2 μmol mol<sup>−1</sup> Final report
Viallon, le,Flores, Edgar,Idrees, Faraz,Moussay, Philippe,Wielgosz, Robert Ian,Kim, D,Kim, Y D,Lee, S,Persijn, S,Konopelko, L A,Kustikov, Y A,Malginov, A V,Chubchenko, I K,Klimov, A Y,Efremova, O V,Zh BUREAU INTERNATIONAL DES POIDS ET MESURES 2017 METROLOGIA -BERLIN- Vol.54 No.1
International comparison CCQM-K84-carbon monoxide in synthetic air at ambient level
Lee, Jeongsoon,Moon, Dongmin,Lee, Jinbok,Lim, Jeongsik,Hall, Brad,Novelli, Paul,Brewer, Paul J,Miller, Michael,Murugun, Arul,Minarro, Marta Doval,Qiao, Han,Shuguo, Hu,Konopelko, L A,Kustikov, Y A,Kolo BUREAU INTERNATIONAL DES POIDS ET MESURES 2017 METROLOGIA -BERLIN- Vol.54 No.1
International comparison CCQM-K119 liquefied petroleum gas
Brewer, P J,Downey, M L,Atkins, E,Brown, R J C,Brown, A S,Zalewska, E T,van der Veen, A M H,Smeulders, D E,McCallum, J B,Satumba, R T,Kim, Y D,Kang, N,Bae, H K,Woo, J C,Konopelko, L A,Popova, T A,Mesh IOP 2018 Metrologia Vol.55 No.-
<P></P> <P>Liquefied hydrocarbon mixtures with traceable composition are required in order to underpin measurements of the composition and other physical properties of LPG (liquefied petroleum gas), thus meeting the needs of an increasingly large industrial market.</P> <P>This comparison aims to assess the analytical capabilities of laboratories for measuring the composition of a Liquid Petroleum Gas (LPG) mixture when sampled in the liquid phase from a Constant Pressure Cylinder. Mixtures contained ethane, propane, propene, i-butane, n-butane, but-1-ene and i-pentane with nominal amount fractions of 2, 71, 9, 4, 10, 3 and 1 cmol mol<SUP>−1</SUP> respectively.</P> <H2>Main text</H2> <P> To reach the main text of this paper, click on <A HREF='https://www.bipm.org/utils/common/pdf/final_reports/QM/K119/CCQM-K119.pdf'>Final Report</A>. Note that this text is that which appears in Appendix B of the BIPM key comparison database <A HREF='http://kcdb.bipm.org/'>kcdb.bipm.org/</A>.</P> <P>The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).</P>