scholarly journals Rapid and inexpensive assessment of soil total iron using Nix Pro color sensor

ael ◽  
2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Gaurav Jha ◽  
Debjani Sihi ◽  
Biswanath Dari ◽  
Harpreet Kaur ◽  
Mallika Arudi Nocco ◽  
...  
Keyword(s):  
Total Iron ◽  
Color Sensor

Microdomains in BaFeO3-y (0.35 < y < 0.50)

1990 ◽  
Vol 48 (4) ◽  
pp. 780-781
Author(s):  
M. Vallet-Regí ◽  
M. Parras ◽  
J.M. González-Calbet ◽  
J.C. Grenier
Keyword(s):  
Electron Diffraction ◽  
Chemical Analysis ◽  
Monoclinic Phase ◽  
Orthorhombic Phase ◽  
Total Iron ◽  
Zone Axis ◽  
Electron Micrograph ◽  
X Ray Diffraction ◽  
X Ray ◽  
Compositional Variations

BaFeO3-y compositions (0.35<y<0.50) have been investigated by means of electron diffraction and microscopy to resolve contradictory results from powder X-ray diffraction data.The samples were obtained by annealing BaFeO2.56 for 48 h. in the temperature range from 980°C to 1050°C . Total iron and barium in the samples were determined using chemical analysis and gravimetric methods, respectively.In the BaFeO3-y system, according to the electron diffraction and microscopy results, the nonstoichiometry is accommodated in different ways as a function of the composition (y):In the domain between BaFeO2.5+δBaFeO2.54, compositional variations are accommodated through the formation of microdomains. Fig. la shows the ED pattern of the BaFeO2.52 material along thezone axis. The corresponding electron micrograph is seen in Fig. 1b. Several domains corresponding to the monoclinic BaFeO2.50 phase, intergrow with domains of the orthorhombic phase. According to that, the ED pattern of Fig. 1a, can be interpreted as formed by the superposition of three types of diffraction maxima : Very strong spots corresponding to a cubic perovskite, a set of maxima due to the superposition of three domains of the monoclinic phase along [100]m and a series of maxima corresponding to three domains corresponding to the orthorhombic phase along the [100]o.

Development and evaluation of trans-Amadi groundwater parameters: The integration of finite element techniques

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Finite Element ◽  
Polynomial Regression ◽  
Nitrate Concentration ◽  
Strong Relationship ◽  
Total Iron ◽  
Coefficient Of Determination ◽  
Port Harcourt ◽  
Polynomial Expression ◽  
The Relationship ◽  
Best Fit

Mathematical model was developed and evaluated to monitor and predict the groundwater characteristics of Trans-amadi region in Port Harcourt City. In this research three major components were considered such as chloride, total iron and nitrate concentration as well as the polynomial expression on the behavious on the concentration of each component was determined in terms of the equation of the best fit as well as the square root of the curve. The relationship between nitrate and distance traveled by Nitrate concentration by the model is given as Pc = 0.003x2 - 0.451x + 14.91with coefficient of determination, R² = 0.947, Chloride given as Pc = 0.000x2 - 0.071x + 2.343, R² = 0.951while that of Total Iron is given as Pc = 2E-05x2 - 0.003x + 0.110, R² = 0.930. All these show a strong relationship as established by Polynomial Regression Model. The finite element techniques are found useful in monitoring, predicting and simulating groundwater characteristics of Trans-amadi as well as the prediction on the variation on the parameters of groundwater with variation in time.

THE IMPACT OF WIND CONDITIONS ON THE LEVELS OF TOTAL IRON CONTENT IN THE SEA OF AZOV

2017 ◽  
Author(s):  
Yuri Fedorov ◽  
Yuri Fedorov ◽  
Irina Dotsenko ◽  
Irina Dotsenko ◽  
Leonid Dmitrik ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Iron Content ◽  
Iron Concentration ◽  
Total Iron ◽  
Sea Of Azov ◽  
Open Area ◽  
The Sea Of Azov ◽  
Dissolved Iron ◽  
The Impact ◽  
Taganrog Bay

The distribution and behavior of certain of trace elements in sea water is greatly affected by both physical, chemical and hydrometeorological conditions that are showed in the scientific works of prof. Yu.A. Fedorov with coauthors (1999-2015). Due to the shallow waters last factor is one of the dominant, during the different wind situation changes significantly the dynamics of water masses and interaction in the system “water – suspended matter – bottom sediments”.Therefore, the study of the behavior of the total iron in the water of the sea at different wind situation is relevant. The content of dissolved iron forms migration in The Sea of Azov water (open area) varies from 0.017 to 0.21 mg /dm3 (mean 0.053 mg /dm3) and in Taganrog Bay from 0.035 to 0.58 mg /dm3 (mean 0.11 mg /dm3) and it is not depending on weather conditions.The reduction in the overall iron concentration in the direction of the Taganrog Bay → The Sea of Azov (open area) is observed on average more than twice. The dissolved iron content exceeding TLV levels and their frequency of occurrence in the estuary, respectively, were higher compared with The Sea of Azov (open area).There is an increase in the overall iron concentration in the water of the Azov Sea on average 1.5 times during the storm conditions, due to the destruction of the structure of the upper layer and resuspension of bottom sediments, intensifying the transition of iron compounds in the solution.

Relationships between Heavy Metals and Their Connection to Amorphous and Total Iron in a Frequently Subsampled Clay Pit Core Sample

2021 ◽  
Author(s):  
Josip Jurković ◽  
Senad Murtić ◽  
Fejzo Bašić ◽  
Teofil Gavrić ◽  
Emina Sijahović ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Core Sample ◽  
Total Iron

Reusability of Fenton Sludge to Reduce COD and Color on Palm Oil Mill Secondary Effluent (POMSE)

2015 ◽  
Vol 1113 ◽  
pp. 486-491 ◽  
Author(s):  
Nurul Shairah Ahmad Shahrifun ◽  
Norul Nazilah Ab’lah ◽  
Hazilia Hussain ◽  
Azmi Aris ◽  
Qistina Omar ◽  
...  
Keyword(s):  
Palm Oil ◽  
Ferrous Iron ◽  
Total Iron ◽  
Fenton Oxidation ◽  
Color Removal ◽  
Secondary Effluent ◽  
Percentage Removal ◽  
Palm Oil Mill

This paper reports on the reusability of iron sludge generated from the solar Fenton oxidation on Palm Oil Mill Secondary Effluent (POMSE) samples. The aim of this study was to observe the reusability of Fenton sludge to be used as iron sources for reducing the COD and color of POMSE. The feasibility of iron sludge was determined by recycling the iron sludge five times. Result showed that the percentage removal of COD and color was generally reduced from fresh iron used (F1) to Recycled 1 (R1) and eventually Recycle 5 (R5). The percentage removal of COD for F1, R1, R2, R3, R4, and R5 were 83.8%, 71.2%, 40.3%, 45.1%, 39% and 35.9% respectively. Meanwhile the color removal for F1-R5 were 97.18%, 87.29%, 75.33%, 73.08%, 68.60% and 70.84% respectively. The amount of ferrous iron and total iron in supernatant however, fluctuated between 0.00 to 0.37 and 2.86 to 9.24mg/L respectively. Amount of iron that remained in the sludge in every cycle starting from F1 to R5 were 7271, 7404, 7275, 7546, 7238 and 7025mg iron/kg sludge respectively. In conclusion, it was justifiable to recycle Fenton sludge as a high amount of iron remained even after the fifth time of recycling.

Effect of Domestic Processing and Cooking Methods on Total, HCl Extractable Iron and in vitro availability of Iron in Spinach and Amaranth Leaves

2002 ◽  
Vol 16 (2) ◽  
pp. 113-120 ◽  
Author(s):  
S.K. Yadav ◽  
S. Sehgal
Keyword(s):  
Iron Content ◽  
Dry Weight ◽  
Total Iron ◽  
Cooking Methods ◽  
In Vitro Availability ◽  
Domestic Processing ◽  
Polyethylene Bags ◽  
And Storage ◽  
Extractable Iron

Spinach ( Spinacia oleracia) and amaranth ( Amaranthus tricolor) leaves were stored in polyethylene bags and without packing for 24 and 48 hours in a refrigerator at 5°C and 30°C in polyethylene bags. The fresh leaves were also dried (oven and sun), blanched (5, 10 and 15 min) and cooked in an open pan and a pressure cooker. The processed leaves were analysed for total iron, its availability and antinutrient content. The iron content of these leaves varied from 26.54 to 34.14 mg/l00g, dry weight and its HCl-extractability and in vitro availability were 62.11–67.18% and 3.03–3.97% of total respectively. Drying and storage had no significant effect on total iron content, Hel-extractability and availability ( in vitro), while blanching and cooking resulted in significant improvement of iron availability, and a significant reduction in oxalic acid content, while only blanching significantly reduced phytic acid and polyphenol contents. Thus cooking and blanching are good ways to improve HCl-extractability and in vitro availability of iron.

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