Experimental Study on Determination of Total Iron in Water by Automatic Discrete Spectrophotometry

2013 ◽  
Vol 807-809 ◽  
pp. 223-226
Author(s):  
Bing Tao Liu ◽  
Peng Ju Ding
Keyword(s):  
Experimental Study ◽  
Iron Concentration ◽  
Absorption Spectrometry ◽  
Total Iron ◽  
Stable Operation ◽  
Recovery Efficiency ◽  
Iron Ions ◽  
Rapid Measurement ◽  
Significant Difference

A new method was introduced for rapid measurement of iron ions in drinking water by automatic discrete spectrophotometry. In the iron concentration range 0-1.5mg/L, the linear relationship was good and the correlation coefficient was 0.9998. The total iron detection of recovery efficiency was 99.94%±1.6% and detection limit was 0.006mg/L and precision of the RSD% was 0.35%. The results show that the method was direct, fast, stable operation and lower iron concentration in water can be accurately detected.There is no significant difference compared with the results of atomic absorption spectrometry methods.

X-Ray Spectroscopy in the Clinical Laboratory

1961 ◽  
Vol 7 (2) ◽  
pp. 115-129 ◽  
Author(s):  
Samuel Natelson ◽  
Bertrum Sheid
Keyword(s):  
Total Phosphorus ◽  
Whole Blood ◽  
Phosphorus Content ◽  
Clinical Laboratory ◽  
Total Iron ◽  
Mean Values ◽  
X Ray ◽  
Significant Difference ◽  
Wet Ashing

Abstract X-ray spectroscopy was applied to the determination of the total phosphorus content of serum and the iron content of whole blood (hemoglobin). Samples were placed on confined spots on paper, dried, then passed through the X-ray field. Concentration was then determined from the peaks as drawn on a recorder. A device is described that permits automatic assay of successive samples dried on paper without delays between readings. Samples are placed in the field and rapidly withdrawn at 30-sec. intervals, the response of the recorder serving as a measure of concentration. Results for total phosphorus in serum and total iron in whole blood were compared with those obtained by a wet ashing procedure. No significant difference with respect to both mean values and precision was observed except that total iron by the wet ashing procedure was more precise. However, the X-ray technic was adequate for clinical purposes. Hemoglobin levels calculated from whole-blood iron values demonstrated that bilirubin, red cell debris, leukocytes, and lipids interfered in the colorimetric but not in the X-ray procedure. A hemoglobinometer based on the X-ray spectroscopic technic may, therefore, yield results of greater clinical significance.

Determination of iron content in selected indigenous green leafy vegetables in Baraton, Kenya.

2016 ◽  
Vol 5 (04) ◽  
pp. 4500 ◽  
Author(s):  
Anthoney Swamy T* ◽  
Nyabwari Loice Kerubo ◽  
Jackie K. Obey ◽  
Magut Hillary
Keyword(s):  
Spectrophotometric Method ◽  
Iron Concentration ◽  
Leafy Vegetables ◽  
Test Analysis ◽  
Absorbance Measurement ◽  
Green Leafy Vegetables ◽  
Significant Difference ◽  
Indigenous Vegetables ◽  
Spider Plant

A study was done to determine the level of iron in selected indigenous vegetables using UV-vis spectrophotometric method. The four indigenous vegetables that was frequently consumed by Baraton families were; amaranths, pumpkin leaves, spider plant, and bacella alba, were selected for the study. Absorbance measurement was done on the ash samples of cooked and uncooked vegetables using UV-Vis spectrophotometer at 458 nm.  The results showed among the uncooked vegetables, the iron concentration ranged from 0.081 to 0.23 ppm with pumpkin leaves and baccela alba recording the lowest and highest level respectively. The cooked vegetables had Fe levels ranging for 0.041 ppm to 0.43 ppm with pumpkin leaves and amaranths having lowest and highest Fe levels respectively.  One sample t-test analysis showed that there was no significant difference between the Fe levels in the cooked and uncooked vegetables P>0.05. The findings showed that the sampled vegetables are a source of iron in diet.

Characterization of solid magnetic nanoparticles by means of solid sampling high resolution continuum source electrothermal atomic absorption spectrometry

2016 ◽  
Vol 31 (12) ◽  
pp. 2391-2398 ◽  
Author(s):  
E. Vereda Alonso ◽  
M. M. López Guerrero ◽  
M. T. Siles Cordero ◽  
J. M. Cano Pavón ◽  
A. García de Torres
Keyword(s):  
Particle Size ◽  
Magnetic Nanoparticles ◽  
Iron Concentration ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Direct Determination ◽  
Absorption Spectrometry ◽  
Solid Sampling ◽  
Continuum Source

Direct determination of iron concentration and particle size of solid MNPs using HR CS GFAAS.

Analysis of Ferroalloys by Atomic Absorption Spectrometry

1970 ◽  
Vol 24 (6) ◽  
pp. 576-579 ◽  
Author(s):  
D. C. Smith ◽  
J. R. Johnson ◽  
G. C. Soth
Keyword(s):  
Atomic Absorption ◽  
Iron Concentration ◽  
Absorption Spectrometry ◽  
Sodium Peroxide ◽  
Inorganic Acids ◽  
Reduction Of Iron ◽  
Laboratory Ware ◽  
Absorption Apparatus ◽  
Insoluble Portion

Atomic absorption procedures have been developed for the determination of manganese and silicon in ferromanganese and in silicomanganese, chromium and silicon in three different grades of ferrochromium, silicon in ferrosilicon, vanadium in ferrovanadium, titanium in ferrotitanium, boron in ferroboron, and columbium in ferrocolumbium. In most cases a sample is dissolved by a combination of inorganic acids, including hydrofluoric, and using plastic laboratory ware. A sodium carbonate fusion of the acid insoluble portion of ferroboron is employed. A sodium peroxide fusion is used on the acid insoluble portion of one grade of ferrochromium. No separation of elements or reduction of iron concentration is required. All procedures use a nitrous oxide–acetylene flame and a laminar flow burner with any conventional atomic absorption apparatus. Calibration curves were prepared using either U. S. Bureau of Standards samples or analyzed samples of purchased ferroalloys.

Determination of Calcium in Leisure Foods by Incomplete Digestion-Microemulsion Sampling-High Resolution Continuum Source Flame Atomic Absorption Spectrometry

2014 ◽  
Vol 1010-1012 ◽  
pp. 417-421
Author(s):  
Chao Li ◽  
Shang Long Chen
Keyword(s):  
High Resolution ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Comparative Method ◽  
Absorption Spectrometry ◽  
Continuum Source ◽  
Flame Atomic Absorption ◽  
Significant Difference

The aim of this work was to evaluate the microemulsification after incomplete digestion as sample preparation procedure for determination of Ca in leisure foods by high resolution continuum source flame atomic absorption spectrometry (HR-CS FAAS). Microemulsions were prepared with digestive liquor and n-butyl alcohol as an auxiliary emulsifier after incomplete digestion treatment. The appropriate fuel flow, 70 L/h, and the optimum burner height, 5 mm, were obtained by single factor experimental design. The results showed that the correlation coefficient was better than 0.999, the characteristic concentration was 0.086 mg/L, the precision (RSD) for 6 replicate measurements of Ca was 1.7% and the average of recoveries was 102.1%. F-test and t-test (95% confidence level) in between the proposed method and the comparative method, using microwave digestion-HR-CS FAAS, had no significant difference. Therefore, the proposed method was accurate and stable with a high practical value. It provided scientific basis for determination of metal elements in food.

Determination of bioavailable iron in noncontaminated Slovak soils by flame atomic absorption spectrometry

2006 ◽  
Vol 60 (2) ◽  
Author(s):  
J. Barteková ◽  
M. Žemberyová ◽  
D. Bajčan ◽  
D. Vyšinská
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Chelating Agent ◽  
Absorption Spectrometry ◽  
Total Iron ◽  
Diethylenetriaminepentaacetic Acid ◽  
Calibration Standards ◽  
Flame Atomic Absorption

AbstractA method for the extraction of bioavailable iron from soils from various parts of Slovakia using a buffered diethylenetriaminepentaacetic acid (DTPA) solution was utilized. The extractant consists of 0.005 mol dm−3 DTPA, 0.1 mol dm−3 CaCl2, and 0.1 mol dm−3 triethanolamine with pH of 7.3. DTPA was selected as the chelating agent because it can effectively extract micronutrient metal, iron. Distribution of iron in the horizons of various types of soils with respect to bioavailable iron was evaluated. The bioavailable iron in the extracts was determined by flame atomic absorption spectrometry. The calibration standards were prepared in the same surroundings as the extracts. Comparing to the average of 2.7–3.7 % total iron contents in Slovak soils, the available amounts of iron represent in average only very small amounts, approximately 0.3 % in comparison to total amounts.

scholarly journals Obtaining information from the brain in a non-invasive way: determination of iron in nasal exudate to differentiate hemorrhagic and ischemic strokes

2020 ◽  
Vol 58 (5) ◽  
pp. 847-853 ◽  
Author(s):  
Carmen García-Cabo ◽  
Pablo Llano-Suárez ◽  
Lorena Benavente-Fernández ◽  
Sergio Calleja-Puerta ◽  
José Manuel Costa-Fernández ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Characteristic Curve ◽  
Iron Concentration ◽  
Sampling Procedure ◽  
Non Invasive ◽  
Icp Ms ◽  
Significant Difference ◽  
Promising Source ◽  
The Brain

AbstractBackgroundDifferentiation between hemorrhagic and ischemic stroke is currently made by brain imaging or analyzing blood and cerebrospinal fluid (CSF) samples. After describing a new drainage route from brain to nasal mucosa, nasal exudate samples can be considered a new and promising source of biomarkers. Saliva can also be evaluated.MethodsWe determined iron in nasal exudate and saliva samples from patients of acute stroke during the first 48 h from onset. A simple, non-invasive sampling procedure was employed to obtain information from the brain. Samples were taken with a pre-weighed swab, solved in a 2% nitric acid solution and iron was measured by inductively coupled plasma-tandem mass spectrometry (ICP-MS/MS).ResultsA significant difference in the dispersion of results of iron concentration for both stroke subtypes was observed in nasal exudate samples. The interquartile range was 0.608 nmol mg−1 of iron for hemorrhagic strokes and only 0.044 nmol mg−1 for ischemic strokes. In saliva samples, however, the values were 0.236 vs. 0.157 nmol mg−1. A cut-off limit of 0.102 nmol of iron per mg of nasal exudate provides a methodology with a 90% of sensitivity and a 90% of specificity. The value of the area under (AUC) the receiver operating characteristic curve (ROC) for nasal exudate samples is 0.960, considered as very good in which regards to its predictive value.ConclusionsNon-invasive samples of nasal secretion have allowed obtaining, for the first time, information from the brain. Determination of iron in nasal exudate by ICP-MS allowed differentiation between ischemic and hemorrhagic strokes.

Simultaneous Determination of Aluminum, Iron, Calcium, and Magnesium in Wet-Process Phosphoric Acid by DC Argon Plasma Emission Spectrometry

1981 ◽  
Vol 64 (1) ◽  
pp. 25-27 ◽  
Author(s):  
G Bradley Hunter ◽  
Terry C Woodis ◽  
Frank J Johnson
Keyword(s):  
Phosphoric Acid ◽  
Simultaneous Determination ◽  
Argon Plasma ◽  
Absorption Spectrometry ◽  
Emission Spectrometry ◽  
Plasma Emission ◽  
Wet Process ◽  
Plasma Emission Spectrometry ◽  
Significant Difference

Abstract A method has been developed for the simultaneous determination of Al, Fe, Ca, and Mg in wet-process phosphoric acid by dc argon plasma emission spectrometry. The suppression of Ca and Mg emission by phosphate encountered in flame analyses was nonexistent, and other interferences were minimal. Results obtained by the procedure were compared with those obtained by atomic absorption spectrometry. The paired t-test showed no significant difference between the 2 methods at the 95% confidence level.

scholarly journals A Friendly Complexing Agent for Spectrophotometric Determination of Total Iron

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3071
Author(s):  
Valeria M. Nurchi ◽  
Rosita Cappai ◽  
Nadia Spano ◽  
Gavino Sanna
Keyword(s):  
Accurate Determination ◽  
Iron Concentration ◽  
Total Iron ◽  
Analytical Determination ◽  
Complexing Agent ◽  
Industrial Chemistry ◽  
Spectrophotometric Methods ◽  
Desferrioxamine B ◽  
Control Serum

Iron, one of the most common metals in the environment, plays a fundamental role in many biological as well as biogeochemical processes, which determine its availability in different oxidation states. Its relevance in environmental and industrial chemistry, human physiology, and many other fields has made it necessary to develop and optimize analysis techniques for accurate determination. Spectrophotometric methods are the most frequently applied in the analytical determination of iron in real samples. Taking advantage of the fact that desferrioxamine B, a trihydroxamic acid used since the 1970s in chelation therapy for iron overload treatment, forms a single stable 1:1 complex with iron in whichever oxidation state it can be found, a smart spectrophotometric method for the analytical determination of iron concentration was developed. In particular, the full compliance with the Lambert-Beer law, the range of iron concentration, the influence of pH, and the interference of other metal ions have been taken into account. The proposed method was validated in terms of LoD, LoQ, linearity, precision, and trueness, and has been applied for total iron determination in natural water certified material and in biological reference materials such as control human urine and control serum.

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