CERTIFIED CALIBRATION SOLUTION REFERENCE MATERIAL FOR THE DETERMINATION OF BENZO[A]PYRENE FROM THE NATIONAL METROLOGY INSTITUTE OF JAPAN (NMIJ)

2008 ◽  
Vol 28 (4-5) ◽  
pp. 302-319 ◽  
Author(s):  
N. Hanari ◽  
K. Ishikawa ◽  
S. Otsuka ◽  
K. Higuchi ◽  
R. Iwasawa ◽  
...  
Keyword(s):  
Reference Material ◽  
National Metrology Institute ◽  
Calibration Solution

Determination of Total Carbohydrates in Wine and Wine-Like Beverages by HPLC with a Refractive Index Detector: First Action 2013.12

2014 ◽  
Vol 97 (2) ◽  
pp. 498-505 ◽  
Author(s):  
Steve Kupina ◽  
Mark Roman ◽  
D Anderson ◽  
S Bhandari ◽  
M S Cardozo ◽  
...  
Keyword(s):  
Refractive Index ◽  
Reference Material ◽  
Organic Acids ◽  
Red Wine ◽  
Collaborative Study ◽  
Ion Exchange Resin ◽  
White Wine ◽  
Negative Control ◽  
Total Carbohydrates

Abstract An international collaborative study was conducted of an HPLC-refractive index (RI) detector method for the determination of the combined amounts of sugars, glycerol, organic acids, and phenolic compounds in wines and wine-like beverages. Nine collaboratinglaboratories representing major winery, contract laboratories, and government laboratories tested eight different materials as blind duplicates using the proposed method. Sample materials included red and white wines, port, wine cooler, and nonalcoholic wine. One material was a negative control, and one material was a reference material. Samples were either treated with an ion-exchange resin to remove interferingorganic acids prior to analysis or left untreated toinclude organic acids and phenolics. Red wine samples were treated with polyvinylpolypyrrolidone to remove potential interferences from phenolics prior to analysis. The HPLC analyses were performed on a Bio-Rad Fast Acid Analysis Column using RI detection. Reproducibility (RSDR) for untreated samples(sugars + phenolics + organic acids) ranged from 6.6% for Titrivin AA4 reference material to 11.0% for dry red wine. RSDR for treated samples (sugars only) ranged from 6.8% for white zinfandel to 18.9% for dry white wine. RSDR for treatedsamples (sugars only) + glycerol ranged from 6.4% for white zinfandel to 19.8% for dry red wine. Based on these results, the method was adopted as Official First Action status for determination of total carbohydrates in wine and wine-like beverages.

Homogeneity and stability of a candidate certified reference material for the determination of methamphetamine and amphetamine in hair

2010 ◽  
Vol 53 (4) ◽  
pp. 1037-1041 ◽  
Author(s):  
Sooyeun Lee ◽  
Hajime Miyaguchi ◽  
Eunyoung Han ◽  
Eunmi Kim ◽  
Yonghoon Park ◽  
...  
Keyword(s):  
Reference Material ◽  
Certified Reference Material

scholarly journals Development of Isotope Dilution LC-MS/MS Method for Accurate Determination of Arsenobetaine in Oyster Certified Reference Material

2014 ◽  
Vol 35 (3) ◽  
pp. 821-827 ◽  
Author(s):  
Woo Young Lee ◽  
Yong-Hyeon Yim ◽  
Euijin Hwang ◽  
Youngran Lim ◽  
Tae Kyu Kim ◽  
...  
Keyword(s):  
Reference Material ◽  
Certified Reference Material ◽  
Isotope Dilution ◽  
Accurate Determination

Characterization of water in methylcyclohexane as a certified reference material for determination of trace water content in liquids

Metrologia ◽  
2019 ◽  
Vol 56 (3) ◽  
pp. 034004
Author(s):  
Shinsuke Inagaki ◽  
Toshihiro Suzuki ◽  
Toshiaki Asakai ◽  
Masahiko Numata ◽  
Nobuyasu Hanari ◽  
...  
Keyword(s):  
Reference Material ◽  
Water Content ◽  
Certified Reference Material ◽  
Trace Water
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