Validation of UV - VIS Spectrophotometry for Phosphorous Molybdenum Determination in Soils of Vietnam

Vo, Khuyen Thi Kim; Bui, Lan Thi Thuy; Oko, Gregory Elayeche; Okoi, Emmanuel Paul; Ayomide, Sowale Omowumi

doi:10.9734/csji/2018/42128

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…According to Reddy & DeLaune (2008), surface soils in peatlands are often enriched thanks to the accumulation and decomposition processes; in addition to the remobilization of phosphorus from subsurface soils to surface (through plant uptake) and deposition as detritus material [30]. In general, Melaleuca forest and Peat swamp forest were rich in phosphorus with more than 0.1%P 2 O 5 [31].…”

Section: Total Nitrogen and Total Phosphorus Fluctuationsmentioning

confidence: 99%

Methane Emissions and Related Physicochemical Soil and Water Parameters in the Peat Swamp and Melaleuca Forests of U Minh Thuong National Park in Vietnam

Phương

Loc

Diem

2023

J. of Wat. & Envir. Tech.

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The study aimed to compare methane emissions and related physicochemical soil and water parameters between the Peat swamp forest and Melaleuca forest. The results show that both water and soil parameters at 8 examined sites in Melaleuca forest and Peat swamp forest fluctuated highly over the sampling intervals. The average hourly C-CH 4 emission rates in Melaleuca forest (26.58 mg/m 2 /h) was higher than that in Peat swamp forest (21.18 mg/m 2 /h). Generally, water level and redox potential were important factors regulating emissions of methane gases. The Eh values were all negative values, ranged between −196.5 ± 22.75 mV and −27.75 ± 15.37 mV, indicative of high electron activity and intense anaerobic. Peat swamp forest's soil had relatively higher organic matter, CEC, TN and TP values than Melaleuca forest's soil. The COD values fluctuated between 197.3 ± 51.78 mg/L and 396.8 ± 25.77 mg/L, indicative of organic pollution of surface water. It is suggested shorter time measurement (at least twice a day) of methane emission for more accurate evaluation.

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Section: Total Nitrogen and Total Phosphorus Fluctuationsmentioning

confidence: 99%

Methane Emissions and Related Physicochemical Soil and Water Parameters in the Peat Swamp and Melaleuca Forests of U Minh Thuong National Park in Vietnam

Phương

Loc

Diem

2023

J. of Wat. & Envir. Tech.

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“…Phosphorus, the second most abundant mineral in the body after calcium, is present in lower concentrations in hard tissues than calcium but higher in soft tissues. One of the key roles of phosphorus in the body is forming bones and teeth [4]. Common dietary sources of phosphorus include milk, meat, and nuts [5].…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Analysis in Meat using UV-Vis Spectrophotometry with SnCl2 and Hydrazine Sulfate Reduction

Pratiwi,

Amelia,

Natasya

2023

JKPK

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This study aimed to optimize phosphorus analysis in meat using a molybdenum blue reaction involving SnCl2 and hydrazine sulfate as reducing agents to establish the most effective conditions for phosphorus detection. Meat, an essential source of nutrients like phosphorus, plays a vital role in human health, particularly bone and tooth strength. However, overconsumption of phosphorus can lead to health issues such as hyperphosphatemia, making regular monitoring of phosphorus levels in food necessary. The experiment used SnCl2 and hydrazine sulfate under varying acidic conditions to produce a stable blue complex indicative of phosphorus presence. The complex exhibited maximum absorbance in the 689–729 nm wavelength range. Validation of the method showed high linearity with R2 values of 0.9983 and 0.9984 for SnCl2 and hydrazine sulfate, respectively. The molar absorptivity for SnCl2 was 2.093 x 105 L mol-1 cm-1 and 7.92 x 104 L mol-1 cm-1 for hydrazine sulfate. Detection and quantification limits were established, and the %RSD values in each sample ranged from 1.08% to 1.93%, conforming to standard requirements. Upon analysis of meat samples, including duck, chicken, and beef, the phosphorus levels did not meet the Indonesian Nutritionist Association (PERSAGI) standards. This result emphasizes the need for regular phosphorus analysis in meat products to prevent health risks associated with excessive phosphorus intake, such as hyperphosphatemia.

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Supplementing urea molasses mineral block improves growth performances and blood biochemical parameters of Mithun calves (Bos frontalis)

SungChinTial,

Win,

Aung

et al. 2023

Emerging Animal Species

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Validation of UV - VIS Spectrophotometry for Phosphorous Molybdenum Determination in Soils of Vietnam

Cited by 6 publications

References 10 publications

Methane Emissions and Related Physicochemical Soil and Water Parameters in the Peat Swamp and Melaleuca Forests of U Minh Thuong National Park in Vietnam

Methane Emissions and Related Physicochemical Soil and Water Parameters in the Peat Swamp and Melaleuca Forests of U Minh Thuong National Park in Vietnam

Phosphorus Analysis in Meat using UV-Vis Spectrophotometry with SnCl2 and Hydrazine Sulfate Reduction

Supplementing urea molasses mineral block improves growth performances and blood biochemical parameters of Mithun calves (Bos frontalis)

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