Influential Factors on the Cation Exchange Capacity in Sediment of Merambong Shoal, Johor

Sidi, Nordiani; Aris, Ahmad Zaharin; Talib, Siti Norlela; Johan, Shamsuddin; Yusoff, Tengku Shahrul Tengku Md.; Ismail, Mohd Zamani

doi:10.1016/j.proenv.2015.10.033

Cited by 18 publications

(10 citation statements)

References 7 publications

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“…Similar results were obtained by Araújo et al (2015). The pattern CEC in high depths (20-40 cm) is linked to higher leaching bases for the subsurface layer of soil caused by the S-SO4 2 -and not due to generation of negative charges on the soil (SIDI et al, 2015).…”

Section: Discussionsupporting

confidence: 82%

Management of citrus leprosis using lime sulphur and their implications to soil and plant properties

Andrade

Pattaro²,

Cruz

et al. 2020

Rev. Bras. Frutic.

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Lime sulphur is used worldwide in agriculture to control pests and diseases. Our objective was to determine the effect of lime sulphur applications in an orange orchard on soil chemical properties and foliar nutrients after seven years of use to control B. yothersi. Soil and leaf samples were collected in two consecutive years for determination of soil chemical properties and nutritional analysis, respectively. We also assessed severity of citrus leprosis and productivity of plants. The applications of lime sulphur reduced pH values in CaCl2 and increased levels of S-SO42- in subsurface soil layer. Plants treated with lime sulphur had thehighestleaf concentrations of Ca and S and of the micronutrients B, Cu, Mn e Zn. On the other hand, lime sulphur was able to reduce severity of citrus leprosis and had a positive effect on citrus productivity. The use of lime sulfur must be moderate, as the excessive use of this pesticide can cause imbalances in soil and plants, affecting the quality of food produced and causing negative impacts on the environment.

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Section: Discussionsupporting

confidence: 82%

Management of citrus leprosis using lime sulphur and their implications to soil and plant properties

Andrade

Pattaro²,

Cruz

et al. 2020

Rev. Bras. Frutic.

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“…After composting, the EC of C/N 15 and ST decreased and increased slightly, respectively, while the EC of the other treatments showed no significant change. CEC reflects the ability of compost to absorb heavy metal cations 17 , which is usually positively correlated with humification degree 18 . The CEC of all treatments showed an increasing trend during composting (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…CEC represents the negative charge that exists on the surfaces of clay and OM, which can effectively reflect the ability of compost to adsorb heavy metal cations 17 . In many cases, heavy metal sorption occurs through non-specific sorption processes.…”

Section: Resultsmentioning

confidence: 99%

“…Results demonstrate that the bioavailability of Cd, As and Cr were significantly correlated with total N and P, CEC and OM, and OM, CEC, and EC, respectively. CEC represents the negative charge that exists on the surfaces of clay and OM, which can effectively reflect the ability of compost to adsorb heavy metal cations 17 . In many cases, heavy metal sorption occurs through non-specific sorption processes.…”

Section: Redundancy Analysis Of Physicochemical Parameters and Speciamentioning

confidence: 99%

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Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting

Guo

Wang

Liu

2020

Sci Rep

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This study aims to investigate the relationship between key physicochemical parameters related to composting process and bioavailability of Cd, As and Cr during swine manure composting through regulating different initial carbon to nitrogen (C/N) ratios (15:1, 20:1, 25:1) and bulking agent types (straw, green waste). Results showed that higher initial C/N ratio of 20:1 or 25:1 and straw as bulking agent were optimal to reduce the bioavailability of Cd, As and Cr (62.4%, 20.6% and 32.2% reduction, respectively). Redundancy analysis implied that the bioavailability of Cd was significantly associated with total phosphorus and total nitrogen, deducing the formation of phosphate precipitation and biosorption might participated in the reaction process, while that of As and Cr were mainly influenced by organic matter (OM), cation exchange capacity (CEC) and OM, CEC, electric conductivity, respectively. A total of 48.5%, 64.6% and 62.2% of Cd, As and Cr redistribution information could be explained by the above parameters. Further correlation analysis revealed that bioavailable As and Cr were negatively correlated with humic acid to fulvic acid ratio. In summary, this study confirms that the mechanisms of phosphate precipitation, biosorption and humification played critical role in reducing Cd, As and Cr bioavailability during swine manure composting.

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“…The mobility and bioavailability of metals in the environment can be modulated by sorption/desorption and precipitation/dissolution (Skrbic and Djurisic-Mladenovic, 2010). Therefore, in acidic environments occur the weakening of these chemical bonds, a reduction of CEC and release of metals to ground water (Sidi et al, 2015;Ramos et al, 2016), which is specially verified in estuarine areas with a wider range of the salinity (Bryan & Langston, 1992;Gonçalves & Carvalho, 2006). Despite the foregoing, in the present study, metal concentrations registered in mangrove sediments were below the Threshold Effect Level (TEL, according Environment Canada, 1999), and are not expected to cause observable adverse effects to the biota.…”

Section: Discussionmentioning

confidence: 96%

Can environmental pollution by metals change genetic diversity? Ucides cordatus (Linnaeus, 1763) as a study case in Southeastern Brazilian mangroves

Banci

Mori

Oliveira

et al. 2017

Marine Pollution Bulletin

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Industrial areas on estuarine systems are commonly affected by heavy metals, affecting all local biota. Random Amplified Polymorphic DNA (RAPD) was used to evaluate genetic diversity of Ucides cordatus at mangroves in southeastern Brazil (Juréia, J; São Vicente, SV; and Cubatão, C), with distinct pollution levels by metals. The genetic diversity of this species was compared with concentrations of metals (Cd, Pb, Cu, Cr and Hg) in the environment. A pollution gradient was confirmed (SV>C>J), with low levels detected in water, except for mercury in SV. All metals in the sediment samples were below Threshold Effect Level (TEL), without an apparent biological risk to the biota. Genetic distance was very similar between J and C, with SV occurring as an out-group. RAPD was a powerful tool to investigate the effect of metal pollution on genetic diversity of this mangrove crab, and to evaluate the conservation status of the mangrove ecosystem.

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Influential Factors on the Cation Exchange Capacity in Sediment of Merambong Shoal, Johor

Cited by 18 publications

References 7 publications

Management of citrus leprosis using lime sulphur and their implications to soil and plant properties

Management of citrus leprosis using lime sulphur and their implications to soil and plant properties

Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting

Can environmental pollution by metals change genetic diversity? Ucides cordatus (Linnaeus, 1763) as a study case in Southeastern Brazilian mangroves

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