A RAPID METHOD FOR CATION EXCHANGE CAPACITY ESTIMATION OF MINERAL SOILS USING METHYLENE BLUE ADSORPTION

1988 ◽  
Vol 68 (1) ◽  
pp. 165-169 ◽  
Author(s):  
Y. K. SOON
Keyword(s):  
Methylene Blue ◽  
Organic Matter ◽  
Colorimetric Method ◽  
Exchange Capacity ◽  
Rapid Analysis ◽  
Soil Samples ◽  
Methylene Blue Adsorption ◽  
Independent Variable ◽  
Mineral Soils ◽  
Key Words Methylene Blue

A colorimetric method, based on methylene blue adsorption, for rapid analysis of soil CEC is described. The effect of soil pH and organic matter was examined by multiple regression. For 44 test samples CEC was predicted well from transmittance measured at 550 nm (r2 = 0.735**); the r2 increased to 0.815** by excluding two moderately calcareous soil samples, and to 0.872** by including organic matter as a second independent variable. Key words: Methylene blue adsorption, CEC, colorimetric method

scholarly journals Influence of brick manufacturing on phosphorus and sulfur in different agro-ecological soils of Bangladesh

2017 ◽  
Vol 29 (2) ◽  
pp. 123-131
Author(s):  
Reshma Akter ◽  
Md Jamal Uddin ◽  
Md Faruque Hossain ◽  
Zakia Parveen
Keyword(s):  
Organic Matter ◽  
Cation Exchange ◽  
Soil Ph ◽  
Cation Exchange Capacity ◽  
Clay Content ◽  
Exchange Capacity ◽  
Soil Samples ◽  
Maximum Accumulation ◽  
Brick Kilns ◽  
Total P

A study was carried out to evaluate the effects of brick manufacturing on phosphorus (P) and sulfur (S) concentrations in soil and plant collected from different distances of brick kilns in four AEZs of Bangladesh. Forty eight composite soil samples (0 - 15 cm depth) were collected from 48 points in 12 different sites at 0 m, 300 m, 800 m and 1500 m from brick kilns, where most (site 2, site 3, site 5, site 6, site 7, site 9 and site 10) of the brick kilns used coal for brick burning purposes. Plant samples (rice straw and different vegetables) were also collected from the respective fields except 0 m distances. Significantly (p ? 0.05) lower organic matter, cation exchange capacity, clay content and soil pH were found at 0 m distances compared to other distances. Highest concentration of total P in soil were recorded at 0 m distances and these concentrations decreased with increasing distances from the brick kilns in most of the sites; whereas available P is significantly lower at 0 m distances than that of other distances. Total and available concentration of S in soil followed the trend 0 m>300 m>800 m>1500 m. Maximum accumulation of P (69.15 mg kg-1) and S (0.14%) in plant was found at 800 m away from the brick kiln.Bangladesh J. Sci. Res. 29(2): 123-131, December-2016

Exchangeable cations and cation exchange capacity of forest soil samples: Effects of drying, storage, and horizon

1994 ◽  
Vol 74 (4) ◽  
pp. 421-429 ◽  
Author(s):  
Wietse L. Meyer ◽  
Paul A. Arp
Keyword(s):  
Organic Matter ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Storage Time ◽  
Ammonium Acetate ◽  
Exchange Capacity ◽  
Soil Samples ◽  
Storage Effects ◽  
And Storage ◽  
Extractable Al

Concentrations of Ca, Mg, K, Na, Al, Fe, Mn, and Si extractable with 1 N ammonium chloride (NH4Cl, pH 4.5) and 1 N ammonium acetate (NH4OAc, pH 4.5) were determined for forest soil samples as follows: (1) before drying, and (2) at several time intervals after air-drying (1, 5, 11 and 14 wk). Values for CEC were obtained for the same samples by determining (1) the sum of cations (Al3+, Ca2+, Mg2+, K+, Na+, Fe3+, and Mn2+) in the extracts [denoted [Formula: see text] and [Formula: see text]], and (2) the amount of ammonium retained by the soil samples against water washing [denoted CEC(NH4OAc) and CEC (NH4Cl)]. The soils used in this investigation were taken from four New Brunswick upland forest sites (two sugar maple sites, one mixed wood site, and one spruce site). It was round that (1) extractable Mg, K, Na, and Mn levels were generally not affected by drying, storing, and type of extradant; (2) extractable Al and Fe levels increased immediately after drying; (3) NH4OAc-extracted Al, Fe, and Si exceeded NH4Cl-extracted Al, Fe, and Si; (4) extracted Al and Fe levels tended to drop after 11 wk of storage; (5) small drying effects were also noticed for NH4Cl-extracted Ca; (6) CEC(NH4OAc) and CEC(NH4Cl) values decreased with increasing time of storage; this effect was noticed most for soil samples with high levels of organic matter (Ah, Ahe, Bm, Bf, and Bfh), and was noticed least for sod samples taken from leached horizons (Ae) and subsoil horizons (BC and C); (7) in some cases, storage time increased CEC(NH4OAc) in subsoils; (8) values for [Formula: see text] remained fairly independent or increased slightly with storage time and were closely related with CEC(NH4Cl) values obtained with non-dried samples; (9) values for [Formula: see text] did not relate well with CEC(NH4OAc) and CEC(NH4Cl). Differences for extractable Al were likely due to Al complexation by acetate ions. Drying effects on extractable Al and Fe (and possibly Ca) were likely due to drying-induced fragmentation of soil organic matter. Drying and storage effects on CEC(NH4OAc) and CEC(NH4Cl) were likely due to (1) water-washing and related loss of organic matter, and (2) sensitivity of subsoil minerals to air exposure. Apparent drying and storage effects on CEC were most noted with [Formula: see text] and were least noted with [Formula: see text]. Key words: Cation exchange capacity, ion exchange, drying, storage, ammonium acetate, ammonium chloride extractions

scholarly journals Accumulation of Soil Carbon and Phosphorus Contents of a Rehabilitated Forest

2010 ◽  
Vol 10 ◽  
pp. 1988-1995 ◽  
Author(s):  
Osumanu Haruna Ahmed ◽  
Nur Aainaa Hasbullah ◽  
Nik Muhamad Ab Majid
Keyword(s):  
Organic Matter ◽  
Agricultural Land ◽  
Soil Depth ◽  
Exchange Capacity ◽  
Soil Samples ◽  
Tropical Rainforests ◽  
Phosphorus Accumulation ◽  
Forest Soil Organic Matter ◽  
Forest Rehabilitation ◽  
Total P

The world's tropical rainforests are decreasing at an alarming rate as they are converted to agricultural land, pasture, and plantations. Decreasing tropical forests affect global warming. As a result, afforestation progams have been suggested to mitigate this problem. The objective of this study was to determine the carbon and phosphorus accumulation of a rehabilitated forest of different ages. The size of the study area was 47.5 ha. Soil samples were collected from the 0-, 6-, 12-, and 17-year-old rehabilitated forest. Twenty samples were taken randomly with a soil auger at depths of 0–20 and 20–40 cm. The procedures outlined in the Materials and Methods section were used to analyze the soil samples for pH, total C, organic matter, total P, C/P ratio, yield of humic acid (HA), and cation exchange capacity (CEC). The soil pH decreased significantly with increasing age of forest rehabilitation regardless of depth. Age did not affect CEC of the rehabilitated forest. Soil organic matter (SOM), total C, and total P contents increased with age. However, C/P ratio decreased with time at 0–20 cm. Accumulation of HA with time and soil depth was not consistent. The rehabilitated forest has shown signs of being a C and P sink.

scholarly journals Dampak Kebakaran Hutan Terhadap Flora Dan Sifat Tanah Mineral Di Kawasan Hutan Kabupaten Pelalawan Provinsi Riau

2019 ◽  
Vol 10 (1) ◽  
pp. 40-44
Author(s):  
Basuki Wasis ◽  
Bambang Hero Saharjo ◽  
Robi Deslia Waldi
Keyword(s):  
Organic Matter ◽  
Soil Respiration ◽  
Soil Fertility ◽  
Forest Fires ◽  
Forest Biomass ◽  
Soil Samples ◽  
Organic C ◽  
Mineral Soils ◽  
Total Fungi ◽  
Research Show

Forest fires cause the death of flora, soil damage and smoke disasters. The research was corected at the productivity forest and soil samples were taken through purposive sampling. The result of research show that forest fires cause the death of flora by 100% and erosion occurring at the dept of 5-10 cm. Forest fires cause a significant increase in pH, Ca and Mg mineral soils, and reduce organic C, total microorganisms, total fungi and soil respiration significantly. Forest fires increase soil pH and soil fertility due to ash remaining combustion. The residual combustion ash comes from organic material (natural forest biomass and organic matter) which is burned was which of nutrient needed fan the growth of the vegetation in the forest.Keywords: forest fires, mineral soils, soil fertility, soil properties

scholarly journals Organic-Matter Activity of Some Typical Soils of Puerto Rico

1969 ◽  
Vol 39 (2) ◽  
pp. 65-76
Author(s):  
Fernando Abruña-Rodríguez ◽  
José Vicente-Chandler
Keyword(s):  
Organic Matter ◽  
Puerto Rico ◽  
Soil Organic Matter ◽  
Close Association ◽  
C:N Ratio ◽  
Organic Matter Content ◽  
Exchange Capacity ◽  
Matter Content ◽  
Soil Samples ◽  
Considerable Portion

The exchange capacity of the organic matter in typical soils of Puerto Rico was evaluated from: (1) The variation in the exchange capacity of soil samples following destruction of the organic matter, (2) titration curves of extracted organic matter, (3) and the correlations between exchange capacity and organic-matter content of soil samples. The first method was the most practical and gave fairly accurate results. The second method gave results which were in all cases too high. The third method, though probably the most accurate, is impractical. Results obtained with the first and third methods were similar. The exchange capacity of the organic matter varied rather widely, but was generally between 100 and 150 m.e. per 100 gm. On the average it accounted for about 25 percent of the total exchange capacity of the soils studied. The organic matter removed by flotation had the highest exchange capacity and the more readily oxidizable portions generally appeared to be the most active. This suggests the importance of conserving the more readily lost portions of the soil organic matter. A considerable portion of the soil organic matter was extremely resistant to oxidation, had a narrow C:N ratio, and apparently little exchange capacity. This suggests a close association between the organic matter and the inorganic soil colloids. The marked resistance to oxidation of a considerable portion of the organic matter may partly explain the high contents found even in continuously cultivated soils in Puerto Rico.

Evaluation of Fertility Status of Soils under Bamboo (Bambusa vulgaris) in Akamkpa and Odukpani Local Government Areas of Cross River State, Nigeria

2019 ◽  
pp. 1-9
Author(s):  
E. A. Akpa ◽  
O. S. Bello ◽  
D. M. Olim
Keyword(s):  
Organic Matter ◽  
Cation Exchange Capacity ◽  
Organic Matter Content ◽  
Exchange Capacity ◽  
Matter Content ◽  
Soil Samples ◽  
Cross River ◽  
Cross River State ◽  
Fertility Status ◽  
Bambusa Vulgaris

The aim of this research was to investigate the fertility status of soils under Bamboo (Bambusa vulgaris) in Akamkpa and Odukpani Local Government Areas of Cross River State. Composite soil samples were collected at the depth of 0-15 cm under Bamboo (Bambusa vulgaris) using soil auger from fourteen (14) locations. The soil samples were analysed for some physico-chemical properties using standard procedures. Results obtained showed that the soils were predominantly sandy loam in both Akamkpa and Odukpani with a significant difference in the soil pH which was very strongly acid (mean pH in water =5.0). Organic carbon was high (26.00–41.00 g/kg) in Akamkpa and Odukpani (24.00 – 41.00 g/kg). Total nitrogen was medium (2.4–4.9 g/kg) in Akamkpa and low to medium (0.19 – 0.33%) in Odukpani. Available phosphorus was generally low (1.8-2.9 mg/kg) and (1.88 – 6.63 mg/kg) in both areas. Exchangeable calcium was low to medium (3.6-7.4 cmol/kg) in Akamkpa and medium to high (5.6-14.8 cmol/kg) in Odukpani. Magnesium contents were low (0.8-6.7 cmol/kg) and high (0.4 – 12.4 cmol/kg) in both areas. While exchangeable potassium (0.08 – 0.13 cmol/kg) and (0.09 – 0.13 cmol/kg) with sodium contents (0.06 – 0.08 cmol/kg) and (0.06 – 0.10 cmol/kg) were low. Exchangeable acidity of hydrogen (0.1 – 3.7 cmol/kg) was high in Akamkpa and low to medium (0.08-2.32 cmol/kg) in Odukpani and that of Aluminum contents (0.3 – 4.0 cmol/kg) and (0.0 – 4.0 cmol/kg) were generally low. The cation exchange capacity (CEC) was low (4.5 – 11.4 cmol/kg) in Akamkpa and low to medium (7.2 – 24.01 cmol/kg) in Odukpani and those of Effective Cation Exchange Capacity (ECEC) was low to medium (9.2 – 15.9 cmol/kg) in Akamkpa but low and high (7.8 – 24.41 cmol/kg) in Odukpani. The Base Saturation was medium to high (37 – 96%) in Akamkpa and high (60.9 – 98.4%) in Odukpani. The studies revealed that soils under Bamboo had high organic matter content. This could be attributed to the bamboo leaf fall which enhances the increase of organic matter content.

scholarly journals Genesis of sandstone-derived soils in the Cerrado of the Piauí State, Brazil

2019 ◽  
Vol 14 (4) ◽  
pp. 1
Author(s):  
Diego Ferreira de Souza ◽  
Ronny Sobreira Barbosa ◽  
Yuri Jacques Agra Bezerra da Silva ◽  
Márcio Cleto Soares de Moura ◽  
Romário Porto de Oliveira ◽  
...  
Keyword(s):  
Organic Matter ◽  
Exchange Capacity ◽  
Low Ph ◽  
Parent Material ◽  
Soil Samples ◽  
Soil Profiles ◽  
Exchangeable Bases ◽  
Low Degree ◽  
Chemical Attributes ◽  
Physical And Chemical

This study characterized the morphological, physical and chemical attributes of sandstone-derived soils at the Cerrado of the Piauí State, Brazil, in order to identify evolutionary standards. The study was carried out with five representative soil profiles identified as P1-RY (Typical Flavic Psychotic Neosol - Aquents), P2-PA (Typical Dystrophic Yellow Argisol - Alfisol), P3-RL (Fragmentary Litholic Distrophic Neosol - Psammenit), P4-RQ (Typical Ortic Quartzenetic Neosol - Orthents) and P5-PV (Typical Dystrophic Red Argisol - Ultisol). Soil samples were submitted laboratory analysis described morphologically. In general, the soils presented high sand content, low pH, low content of exchangeable bases and low cation exchange capacity (CEC). Organic matter governed the CEC in most cases, suggesting dependence of organic matter in the supply of charges. These soils showed a low degree of weathering, but with iron of high crystallinity. Thus, the relief and the parent material are the major important soil-forming factors at the Cerrado of the Piauí State. Moreover, these soils are young, with the soils from the Piauí Formation being more evolved. However, the sandstones from the Canindé Group apparently are providing lithological secondary minerals for the soil.

A note on the colorimetric estimation of humic matter in mineral soils

1924 ◽  
Vol 14 (3) ◽  
pp. 469-472 ◽  
Author(s):  
T. Eden
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Absorption Spectra ◽  
Colorimetric Method ◽  
Visible Range ◽  
Total Organic Matter ◽  
Humic Matter ◽  
Colour Intensity ◽  
Peat Soils ◽  
Mineral Soils

Odén has shown that colour intensity comparisons between alkali extracts of peat soils of varying origin can be made since, despite the possible difference in the nature of their humic matter, the absorption spectra are almost identical within the visible range. These absorption spectra are also comparable with that of Merck's Acidum Huminicum, which is a standard preparation. Odén developed his colorimetric method as a means of measuring the degree of humification of the organic matter of peat soils, that is to say, the proportion of the total organic matter which could be classed as humic matter. In this way the disadvantages of Grandeau's method, in which there is no discrimination between the coloured and the colourless parts of the soil organic matter, are obviated.

Sign in / Sign up

Export Citation Format

Share Document