Determination of trace metal baseline values in Posidonia oceanica, Cystoseira sp., and other marine environmental biomonitors: a quality control method for a study in South Tyrrhenian coastal areas

2014 ◽  
Vol 22 (5) ◽  
pp. 3640-3651 ◽  
Author(s):  
Marcelo Enrique Conti ◽  
Mauro Mecozzi ◽  
Maria Grazia Finoia
Keyword(s):  
Quality Control ◽  
Trace Metal ◽  
Control Method ◽  
Posidonia Oceanica ◽  
Coastal Areas ◽  
Quality Control Method ◽  
Baseline Values ◽  
Marine Environmental

scholarly journals Quality-control method for the determination of biological activity of engineered calcineurin subunit B

2016 ◽  
Vol 59 (6) ◽  
pp. 584-588
Author(s):  
Xinchang Shi ◽  
Huan Yang ◽  
Li Xu ◽  
Xiang Li ◽  
Zongwen Huang ◽  
...  
Keyword(s):  
Quality Control ◽  
Biological Activity ◽  
Control Method ◽  
Quality Control Method ◽  
Subunit B

Precision of X-Ray Emission Measurements in the Determination of Low-Alloy Steels with an X-Ray Spectrograph*

1961 ◽  
Vol 5 ◽  
pp. 423-432
Author(s):  
Robert L. O'Neil ◽  
John B. Neuhardt ◽  
William P. Shulhof
Keyword(s):  
Quality Control ◽  
Control Method ◽  
Low Alloy Steels ◽  
Confidence Limits ◽  
Low Alloy Steel ◽  
X Ray ◽  
Quality Control Method ◽  
Alloy Steels ◽  
Future Work

AbstractA large amount of data has been treated statistically to determine daily and long-range variations which occur when replicate determinations are made on low-alloy steel samples. The experiment reported here was designed and run to evaluate the results obtained using an RCA Siemens X-ray spectrograph. As part of a quality-control method for the analysis of low-alloy steels, it was desirable to know the confidence limits for within-day and day-to-day replication. This paper reviews the results of this study and represents an outline of future work planned.

A Quality Control Method for the Determination of Vicinal Diketones and Precursors in Fermenting Wort

1982 ◽  
Vol 40 (1) ◽  
pp. 15-17
Author(s):  
H. Garza-Ulloa ◽  
E. González ◽  
A. M. Canales ◽  
J. A. Sierra
Keyword(s):  
Quality Control ◽  
Control Method ◽  
Quality Control Method

Rapid and simultaneous determination of 22 constituents in Menispermi Rhizoma by ultra-performance liquid chromatography tandem triple quadrupole mass spectrometry

2017 ◽  
Vol 9 (20) ◽  
pp. 3029-3038
Author(s):  
Jinxia Wei ◽  
Kunna Cui ◽  
Yueying Du ◽  
Jia Yu ◽  
Zhen Jiang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Quality Control ◽  
Liquid Chromatography ◽  
Control Method ◽  
Ultra Performance Liquid Chromatography ◽  
Triple Quadrupole ◽  
Quadrupole Mass ◽  
Simultaneous Quantification ◽  
Quality Control Method

A multi-component-assay quality control method, using UPLC-MS/MS, has been developed for the simultaneous quantification of 22 constituents in Menispermi Rhizoma.

scholarly journals A Validated LC Method for Separation and Determination of Tetralone-4-O-β-D-Glucopyranoside and 4-Hydroxy-α-Tetralone in Ammannia multiflora

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Harish C. Upadhyay ◽  
Ram K. Verma ◽  
Santosh K. Srivastava
Keyword(s):  
Quality Control ◽  
Flow Rate ◽  
Control Method ◽  
Hplc Method ◽  
Assay Method ◽  
Good Linearity ◽  
Rp Hplc ◽  
Quality Control Method ◽  
Calibration Curves

A rapid, sensitive, and reproducible RP-HPLC method was developed for the determination of two constituents in Ammannia multiflora, namely, tetralone-4-O-β-D-glucopyranoside (1) and 4-hydroxy-α-tetralone (2). The samples were separated on a Spherisorb ODS2 column (250×4.6 mm, i.d., 10 μm) and binary elution of water and methanol (2 : 3) with flow rate of 0.8 mL/min at λ 254 nm. The LOD and LOQ were found 0.05 and 0.18 μg/mL for compound 1 and 0.06 and 0.18 μg/mL for compound 2, respectively. All calibration curves showed good linearity (r2>0.999) within test ranges for both the analytes. The RSD values for intra-and inter-day precisions were less than 1.1%. The successful application of the developed method on five different samples revealed an average 0.0206% and 0.7636% (w/w) of compounds 1 and 2, respectively in A. multiflora indicating that the developed LC assay method may be readily utilized as a quality control method for the plant.

A systematic quality control method of Huangqi decoction: simultaneous determination of eleven flavonoids and seven triterpenoid saponins by UHPLC-MS

2014 ◽  
Vol 6 (13) ◽  
pp. 4593-4601 ◽  
Author(s):  
Hui-Long Luo ◽  
Jie Zhong ◽  
Fu-Yuan Ye ◽  
Qian Wang ◽  
Yue-Ming Ma ◽  
...  
Keyword(s):  
Quality Control ◽  
Quantitative Analysis ◽  
Simultaneous Determination ◽  
Control Method ◽  
Bioactive Components ◽  
Triterpenoid Saponins ◽  
Quality Control Method

A novel UHPLC-MS method was developed for the quantitative analysis of 18 major bioactive components from Huangqi decoction (HQD).

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