A New Extraction Procedure for Simultaneous Quantitative Determination of Water-soluble Metals in Reaction Products of Clays and Inorganic Salts

2002 ◽  
Vol 50 (3) ◽  
pp. 401-405 ◽  
Author(s):  
Fernando G. Colina ◽  
Santiago Esplugas ◽  
Jose Costa
Keyword(s):  
Quantitative Determination ◽  
Extraction Procedure ◽  
Water Soluble ◽  
Inorganic Salts ◽  
Reaction Products

Quantitative determination of water-soluble scavengers in neoplastic and non-neoplastic human breast tissue

1988 ◽  
Vol 41 (5) ◽  
pp. 690-694 ◽  
Author(s):  
C. G. Honegger ◽  
J. Torhorst ◽  
H. Langemann ◽  
A. Kabiersch ◽  
W. Krenger
Keyword(s):  
Quantitative Determination ◽  
Breast Tissue ◽  
Water Soluble ◽  
Human Breast ◽  
Human Breast Tissue

scholarly journals Determination of Cr (VI) Content in Water-Soluble Dyes

2020 ◽  
Vol 59 (1) ◽  
pp. 88-94
Author(s):  
M P Sathianarayanan ◽  
Rina Nayak ◽  
Yogesh Hande
Keyword(s):  
Spectroscopic Analysis ◽  
Extraction Procedure ◽  
Cost Effective ◽  
High Load ◽  
Water Soluble ◽  
Recovery Study ◽  
Good Repeatability ◽  
Repeatability And Reproducibility ◽  
Standard Solution

Abstract Hexavalent chromium detection in the presence of high load of colorants is a challenge, and it is an important area of study. Colorants are a class of interfering substance in many spectroscopic analysis and chromatographic separation and detection. In this study, a method has been developed to separate out Cr (VI) and water-soluble dyes by using activated charcoal as an absorption medium. The extraction procedure was optimized with Cr (VI) standard solution for quantification. The efficacy of the extraction procedure for the removal of water-soluble dyes and detection of Cr (VI) was checked with a spike recovery study. Based on the spike recovery study, the method has been validated as per the international validation protocol. The method is simple, cost effective and has a detection limit down up to 3.0 mg/kg. The recovery rate of Cr (VI) in water-soluble dyes like reactive yellow HE 6G, reactive red 218, turquoise blue HGN, reactive navy blue RX and reactive black 5A was found to be more than 90% with a good repeatability and reproducibility.

Quantitative Determination of Cadmium in Water-Soluble Color Additives by Atomic Absorption Spectroscopy

1972 ◽  
Vol 55 (5) ◽  
pp. 1145-1149
Author(s):  
Lueangier Moten
Keyword(s):  
Aqueous Solutions ◽  
Quantitative Determination ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Quantitative Method ◽  
Water Soluble ◽  
Low Levels ◽  
Absorption Measurements

Abstract A quantitative method is presented for the determination of cadmium at low levels (5–20 ppm) in water-soluble color additives by atomic absorption spectroscopy. Absorption measurements were made on aqueous solutions of typical color additives to which known amounts of cadmium had been added. The method requires no pretreatment of sample and should be applicable to all water-soluble color additives.

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.

scholarly journals Quantitative determination of water soluble vitamins, minerals and proximate compositions of three varieties of beans in Bauchi State Nigeria

2019 ◽  
Vol 25 (2) ◽  
pp. 123-133
Author(s):  
Z.S. Mohammed ◽  
A.I. Matinja ◽  
H Tijjani ◽  
A Abdullahi ◽  
M.A. Dangambo ◽  
...  
Keyword(s):  
Glycine Max ◽  
Quantitative Determination ◽  
Vigna Unguiculata ◽  
Proximate Composition ◽  
Vitamin B1 ◽  
Mineral Elements ◽  
Water Soluble ◽  
World Health ◽  
Health Organization

The quantitative determination of water soluble vitamins, minerals and proximate compositions of three varieties of beans in Bauchi State, Nigeria, was carried out in this study. Three varieties of beans which includes one of the most commonly consumed species of cowpea (Vigna unguiculata) locally called Kanannade, the least consumed (most rare) specie of cowpea (Vigna unguiculata) locally called gayan-gayan and soybean (Glycine max) locally called waken soya found in Bauchi State, Nigeria were analysed. Results for the determination of the proximate composition shows that soybean (Glycine max) among three different samples had the highest protein content (34.21 %), ash content (3.11 %), Crude fat (25.30 %). While Cowpea (kanannade) has the highest Carbohydrate content (58.04 %) and Cowpea (gayan-gayan) has the highest Moisture contents (12.43 %) respectively. Soya bean has the highest contents of vitamin (B1, B3, and B6) for the three water soluble vitamins analysed although the values obtained were less than the recommended dietary allowance recommended by the World Health Organization (WHO). In the Mineral composition of the two species of cowpea beans (Vigna unguiculata), and soybean analysed, soybean had the highest content of most of the mineral elements. The concentration of potassium was found to be very much higher than all the other mineral elements that were determined in all the samples. The results from this analysis shows that the three varieties of beans analyzed were found to be rich in minerals and highly nutritious.Keywords: Vigna unguiculata, Glycine max, vitamins, minerals and proximate composition

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