The adsorption of lead and other heavy metals on oxides of manganese and iron

Soil Research ◽  
1980 ◽  
Vol 18 (1) ◽  
pp. 61 ◽  
Author(s):  
RM McKenzie
Keyword(s):  
Heavy Metals ◽  
Iron Oxides ◽  
Manganese Oxides ◽  
The Other ◽  
Lead And Zinc ◽  
Copper Manganese ◽  
Manganese Minerals ◽  
Nickel Lead ◽  
Cobalt Copper

Measurements were made of the adsorption of cobalt, copper, manganese, nickel, lead, and zinc on nine synthetic manganese oxides and three synthetic iron oxides, to determine the mechanism by which lead accumulates in the manganese oxides in soils. Adsorption of lead by the manganese oxides was up to 40 times greater than that by the iron oxides, and lead was adsorbed more strongly than any of the other ions studied by all of the oxides except goethite. This is considered to be the reason for the accumulation of lead in the manganese oxides in soils. No evidence was found for the oxidation of lead, nor for the formation of specific lead-manganese minerals.

Determination of toxic heavy metals in sea water by FAAS after preconcentration with a novel chelating resin

2011 ◽  
Vol 64 (4) ◽  
pp. 803-808 ◽  
Author(s):  
D. Manivannan ◽  
V. M. Biju
Keyword(s):  
Heavy Metals ◽  
Water Samples ◽  
Sea Water ◽  
Metal Chelates ◽  
Chelating Resin ◽  
Toxic Heavy Metals ◽  
Lead And Zinc ◽  
Copper Manganese ◽  
Cobalt Copper

A solid phase extraction procedure was developed for preconcentration of toxic heavy metals such as cadmium, cobalt, copper, manganese, lead and zinc in sea water samples. A microcolumn packed with 6-[(4-hydroxyphenyl)diazenyl]naphthalene-2,3-diol-formaldehyde (HPDN-F) resin acts as a sorbent to retain the analyte ions by forming metal chelates. The retained trace level metal was subsequently eluted with 1 mol/L HCl and the acid eluent was analysed by Flame Atomic Absorption Spectrophotometer (FAAS). The HPDN-F chelating resin and its metal chelates were characterized by spectral and thermal analysis. The chelating property of the HPDN-F resin towards divalent metal ions was studied as a function of pH and preconcentration flow rate. The recoveries of cadmium, cobalt, copper, manganese, lead and zinc under the optimum working conditions were above 95%. The relative standard deviations were <2%. The limits of detection were <0.1 μg/L. The method presented was applied for the determination of cadmium, cobalt, copper, manganese, lead and zinc in sea water samples.

An electron microprobe study of the relationships between heavy metals and manganese and iron in soils and ocean floor nodules

Soil Research ◽  
1975 ◽  
Vol 13 (2) ◽  
pp. 177 ◽  
Author(s):  
RM McKenzie
Keyword(s):  
Heavy Metals ◽  
Iron Oxides ◽  
Electron Microprobe ◽  
Manganese Oxides ◽  
Ocean Floor ◽  
Manganese Nodules ◽  
Considerable Fraction

Six soils, six manganese nodules derived from soils and two ocean floor nodules were analysed by electron microprobe techniques to determine inter-element relationships. Cobalt was related to manganese in all samples, and a considerable fraction of the total cobalt in the soils was associated with the manganese oxides. Nickel was related to manganese in all of the nodules and some of the soils. In the soils, although the concentrations of nickel were highest in the manganese oxides, a large proportion of the total nickel was actually associated with the iron oxides. Copper and particularly zinc accumulated in the iron oxides in the soils, but in the nodules these elements were associated with either manganese or iron, and in some cases with neither.

scholarly journals EVALUATION OF MICROBIAL LOAD AND SELECTED HEAVY METALS CONTAMINATION IN THE RIVER BEAS (PUNJAB) INDIA

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Baljot Singh Maan ◽  
Syed Shabih Hassan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Microbial Load ◽  
Plate Count ◽  
Standard Protocol ◽  
Faecal Coliforms ◽  
Total Plate Count ◽  
Lead And Zinc ◽  
Nickel Lead ◽  
River Beas

Aim: To analyse the heavy metal contamination and microbial load in upstream (Talwara), midstream (Urmar Tanda) and downstream (Harike Pattan) stretches of the river Beas in Punjab. Methodology: Month-wise samples were collected in triplicate during the period of May to December, 2019. Heavy metal parameters such as Arsenic, Cadmium, Nickel, Lead and Zinc were analysed by Atomic Inductively Coupled Plasma Mass Spectrometry following standard protocol. Microbial load in water samples was calculated in terms of Total Plate Count, Total Coliform and Faecal Coliform as per following standard protocol. Statistical analysis involved calculating Analysis of Variance at 5% significant level (p<0.05). Results: The study revealed that heavy metal parameters like Arsenic, Cadmium, Nickel, Lead and Zinc ranged in mgl from 0.0 to 0.009, 0.0 to 0.02, 0.0 to 0.004, 0.0 to 0.001, and 0.0 to 0.036 respectively. Total Plate Count ranged from 0.32 4 5 -1 -1 x10 to 3.2 x10 cfu ml whereas, Total Coliforms and Faecal Coliforms ranged from 4.0 to 1100 MPN 100 ml and 0.0 to -1 460 MPN 100 ml respectively. The mean concentrations of analysed metals were recorded in the order of Zinc > Cadmium > Arsenic >Nickel >Lead; and most of them were under the permissible limits; however, the presence of faecal coliforms in the water is alarmingly high at Harike Pattan. Interpretation: This investigation revealed that the river Beas water is suitable for supporting aquatic life, bathing, irrigation and other purposes. The microbial load and the heavy metal parameters need to be monitored regularly, so that their adverse effects on living beings or aquatic organisms may be minimized. River stretch near Harike Pattan and Urmar Tanda being an important habitat of endangered freshwater Dolphin (Platanista gangetica minor), Smooth-Coated Otter (Lutrogale perspicilliata) and Ghariyal (Gavialis gangeticus) is more vulnerable to the toxic levels of heavy metals and contamination of faecal coliform.

Monitoring of Heavy Metals in the Water and Sediments of the Ganga River, India

1987 ◽  
Vol 19 (9) ◽  
pp. 107-117 ◽  
Author(s):  
Mohammad Ajmal ◽  
Mujahid A. Khan ◽  
Azhar A. Nomani
Keyword(s):  
Atomic Absorption Spectrophotometry ◽  
The Other ◽  
Sampling Station ◽  
Ganges River ◽  
Cobalt Chromium ◽  
Absorption Spectrophotometry ◽  
Lead And Zinc ◽  
Iron Manganese ◽  
The Ganges ◽  
Nickel Lead

The concentrations of cadmium, cobalt, chromium, copper, iron, manganese, nickel, lead and zinc in the water and sediments of the Ganges river were determine by Atomic Absorption Spectrophotometry in the year 1981. The respective ranges of concentrations of cadmium, cobalt, chromium, copper, iron, manganese, nickel, lead and zinc found in the water were ND-0.53, ND-4.89, 3.20–56.6, ND-27.57, 22.0–133.8, 35.0–93.0, ND-2.22, 2.0–5.6 and 7.37–67.36 µgl−1 and in the sediments were ND-3.48, 2.35–14.4, 9.0–83.16, 11.27–95.0, 2168.0–11624.8, 110.5–470.0, 3.45–28.80, 0.55–21.8 and 72.0–418.6 µgg−1. The data showed that there was considerable variation in the elements from one sampling station to the other. The sediments collected from different sampling stations were also analysed for pH, calcium carbonate, organic matter, potassium and phosphorus.

scholarly journals Assessment of Metal Levels in Biotic and Abiotic Materials from Giresun Forests

2020 ◽  
Vol 8 (11) ◽  
pp. 2468-2471
Author(s):  
Mustafa Türkmen ◽  
Aysun Türkmen ◽  
Ayhan Kara
Keyword(s):  
Water Samples ◽  
Logarithmic Transformation ◽  
Icp Oes ◽  
Lead And Zinc ◽  
Metal Levels ◽  
Copper Manganese ◽  
One Way Anova ◽  
Nickel Lead ◽  
Soil And Water ◽  
Iron Chromium

The study investigated the metal levels in biotic and abiotic materials from Giresun forests. While soil and water samples were selected as abiotic materials, leaves and moss were selected as biotic materials in forest. These selected materials were sampled from six stations. All samples were analyzed three times for arsenic, iron, chromium, copper, manganese, nickel, lead and zinc by ICP-OES. A logarithmic transformation was done on the data to improve normality. One way ANOVA and Duncan’s multiple range tests were performed to test the differences among metal levels of stations. The differences among metal levels in stations were statistically significant (p

Assessment of micro and macro nutrients in poultry feeds available in Dhaka city, Bangladesh.

2017 ◽  
Vol 1 ◽  
pp. 264
Author(s):  
Md Didarul Islam ◽  
Ashiqur Rahaman ◽  
Fahmida Jannat
Keyword(s):  
Heavy Metals ◽  
Adverse Effect ◽  
The Other ◽  
Nutrient Level ◽  
Dhaka City ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Low Concentration ◽  
Feed Formulation ◽  
Macro Nutrients

This study was based on to determine the concentration of macro and micro nutrients as well as toxic and nontoxic heavy metals present in the chicken feed available in Dhaka city of Bangladesh. All macro nutrients, if present in the feed at high concentration have some adverse effect, at the same time if this nutrient present in the feed at low concentration this have some adverse effect too. So that this nutrient level should be maintained at a marginal level. On the other side toxic heavy metals if present in the feed at very low concentration those can contaminate the total environment of the ecosystem. In this study six brand samples (starter, grower, finisher and layer) which was collected from different renowned chicken feed formulation industry in Bangladesh. Those samples were prepared for analysis by wet ashing and then metals were determined by Atomic Absorption Spectroscopy. It was found that 27.7 to 68.4, 57.3 to 121.9, 0.21 to 4.1, 0.32 to 2.1, 0.11 to 1.58, 0.28 to 2.11 and 0.28 to 1.78 for zinc, iron, copper, mercury, cadmium, nickel and cobalt respectively. It was found that essential macro and micro nutrients were present in the feed in low concentration on the other side mercury was present in high concentration in the feed samples.

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