Determination of Inorganic Salts in Sulfonated Oils

1934 ◽  
Vol 6 (3) ◽  
pp. 220-223 ◽  
Author(s):  
Ralph Hart
Keyword(s):  
Inorganic Salts

Determination of Inorganic Salts in Crude Oils

1942 ◽  
Vol 14 (12) ◽  
pp. 947-948 ◽  
Author(s):  
E. P. Rittershausen ◽  
R. J. DeGray
Keyword(s):  
Inorganic Salts ◽  
Crude Oils

Serum Copper and Iron on a Single Sample

1958 ◽  
Vol 4 (1) ◽  
pp. 43-48 ◽  
Author(s):  
B Zak ◽  
N Ressler
Keyword(s):  
Quantitative Determination ◽  
Serum Sample ◽  
Organic Material ◽  
Serum Copper ◽  
Inorganic Salts ◽  
Organic Extract ◽  
Phenanthroline Complex ◽  
Extract Phase ◽  
Determination Of Copper

Abstract A procedure has been described for the quantitative determination of copper and iron in one serum sample. The sera are wet ashed to destroy organic material, leaving inorganic salts available in the residue for the subsequent spectrophotometric determination of iron as the ferrous-1,10-phenanthroline complex in the aqueous phase, and copper as the cuprous-2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline in an organic extract phase.

A 96-Well Plates-based UV Spectrophotometric Assay for Determination of Total Glucosinolates in Isatis indigotica Roots

2021 ◽  
Vol 17 ◽  
Author(s):  
Yanzhi Sun ◽  
Hongchao Zhang ◽  
Zhihong Cheng
Keyword(s):  
Quality Control ◽  
Enzymatic Hydrolysis ◽  
Quantitative Method ◽  
Rapid Determination ◽  
Spectrophotometric Assay ◽  
Inorganic Salts ◽  
Isatis Indigotica ◽  
Acceptable Accuracy ◽  
High Concentrations

Background: Glucosinolates (GLS) are important secondary metabolites in Cruciferae vegetables and herbs. Currently, the assays of total GLS determination are cumbersome (requiring acidic or enzymatic hydrolysis and addition of staining reagents), time-consuming, and indirect. High concentrations of inorganic salts are inevitably incorporated into the GLS products during separation. There is a need for a quantitative method for simple and rapid determination of total GLS after desalting process. Methods: A 96-well plates-based UV spectrophotometric method for determination of total GLS of Isatis indigotica roots was developed in the present study. The detection wavelength is set at 230 nm using quartz plates. This assay was validated using gluconapin and sinigrin as reference standards, and applied to determine the total GLS of I. indigotica roots prepared from five different desalting methods. Results: This assay is specific for total GLS prepared from I. indigotica roots, and it has acceptable accuracy (91.76–98.18% for quality control, and 95.59–102.52% for addition/recovery), precision (0.24–0.70% pooled RSD), reproducibility (0.31–1.84% RSD), and stability (0.24–1.45% RSD) over a 72-h period. Conclusion: The 96-well plates-based UV spectrophotometric assay is simple and accurate for high-throughput determination of total GLS.

scholarly journals The determination of acetic acid in the presence of inorganic salts

The Analyst ◽  
1897 ◽  
Vol 22 (December) ◽  
pp. 309b
Author(s):  
Bertram Blount
Keyword(s):  
Acetic Acid ◽  
Inorganic Salts
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