scholarly journals Identification of Elemental Composition and Heavy Metal Content in Maninjau Lake Sediment Using X-Ray Fluorescence (MNJ 18-41B)

2021 ◽  
Vol 6 (2) ◽  
pp. 68-76
Author(s):  
Fajar Akmal ◽  
◽  
Hamdi Rifai ◽  
Syafriani Syafriani ◽  
Caroline Bouvet De La Maisonneuve ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Elemental Composition ◽  
Volcanic Ash ◽  
X Ray ◽  
Volcanic Material ◽  
Metal Elements ◽  
A Value ◽  
Measurement Results ◽  
West Sumatra ◽  
Heavy Metal Elements

Maninjau Lake is a caldera lake located in Agam, West Sumatra. This lake was formed from the volcanic activity of Mount Maninjau Purba about 60,000 years ago. The volcanic material resulting from the eruption is scattered and deposited in various places, one of which is in lake sediments. Volcanic ash contains various types of elements, including heavy metal elements. This study aims to determine the composition and content of heavy metal in the sediments of Maninjau Lake. The sample analyzed was MNJ 18-41B with a core length of 440 mm, focusing on specimens 148 mm and 376 mm. The selection is a specimen based on the magnetic susceptibility value obtained from the measurement meter susceptibility of the MS2E. Specimen 148 has a value susceptibility low of 2.1 × 10-8 m3/kg, while the 376 specimens have the highest value of susceptibility, the highest 141 × 10-8 m3/kg. The content of sediment elements was determined using the results of X-Ray Fluorescence (XRF) measurements. The measurement results showed that the mineral-forming elements in the sediments of Lake Maninjau were dominated by Si, Fe, Rh, and Zr. In contrast, the highest heavy metal elements are Mn, Fe, Sr, and Rh. Based on the elemental composition and mineral oxide compounds in the sediments of Lake Maninjau derived from volcanic ash.

scholarly journals Portable X-Ray Fluorescence (pXRF) Analysis of Heavy Metal Contamination in Graveyards with Contrasting Soil Types

2021 ◽  
Author(s):  
Charles Madden ◽  
Jamie K. Pringle ◽  
Adam J. Jeffery ◽  
Kristopher D. Wisniewski ◽  
Vivienne Heaton ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Element Concentration ◽  
Heavy Metal Contamination ◽  
Soil Analysis ◽  
Near Surface ◽  
X Ray ◽  
Metal Elements ◽  
Study Results ◽  
Heavy Metal Elements ◽  
Burial Grounds

Abstract Human remains have been interred in burial grounds since historic times. Although the re-use of graveyards differs from one country, region or time-period to another, over time graveyard soil may become contaminated or enriched with heavy metal elements. This paper aims to present heavy metal element soil analysis from two UK church graveyard study sites with contrasting necrosols, but similar burial densities and known burial ages dating back to the 16th Century and some possibly older than 1,000 years. Portable X-Ray Fluorescence (pXRF) element analyses were undertaken, both in-situ on surface locations and laboratory-based on surface and near-surface soil pellets. Results show elevated levels of Pb, Mn, Cr, Cu, Zn and Ca in both necrosols when compared to background values. Element concentration anomalies remained consistently higher than background samples down to 2 m bgl, where sampled, but reduced away from church buildings which may reflect burial densities. Element concentration anomalies were higher in the clay-rich necrosol than in sandy necrosol. Field-based rapid measurements gave similar relative concentration values to laboratory-based soil pellet measurements, although laboratory-based analyses were more precise. Study results implications suggest that long-used necrosols are likely to be more contaminated with heavy-metal elements than similar soil outside graveyards with implications for burial grounds management, adjacent populations and where burial grounds have been deconsecrated and turned to residential dwellings.

scholarly journals Study on the Content and Influence of Heavy Metal Elements in Dust of Xiqing District of Tianjin

2021 ◽  
Vol 248 ◽  
pp. 01042
Author(s):  
YanShan Yin ◽  
Jin Xu
Keyword(s):  
Heavy Metal ◽  
Air Quality ◽  
Human Health ◽  
Inductively Coupled Plasma ◽  
Great Influence ◽  
Electric Heating ◽  
Atmospheric Environment ◽  
Total Dust ◽  
Metal Elements ◽  
Heavy Metal Elements

At present, heavy metal elements in dust have great influence on air quality and human health,therefore, the content and influence of heavy metal elements on campus were studied. Firstly, PM10 and total dust in the autumn campus atmosphere were sampled for 10 consecutive days, and then digested by electric heating plate digestion method. Then, inductively coupled plasma emission spectrometer (ICP-OES) was used to detect and analyze the content and concentration ratio of seven heavy metal elements Cu, Pb, Cd, Zn, Cr, Hg and Ba in PM10 and total dust. Finally, through comparative analysis, it is concluded that heavy metal pollutants in the atmospheric environment are mainly Zn and Ba, and the concentrations of Cd, Zn and Ba are seriously exceeded, so the air quality in Xiqing District of Tianjin is poor, and the particle size distribution of Cd and Hg makes it easy to enter the human body, which is especially unfavorable to human health.

scholarly journals The Effect of Heavy Metal Pollutants on Bioluminescence Intensity of Luminous Mushrooms (Nenothopanus sp)

2020 ◽  
Vol 21 (2) ◽  
pp. 98-109
Author(s):  
Witriani Marvinatur Ihsan ◽  
Ratnawulan Ratnawulan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Concentration ◽  
Maximum Intensity ◽  
Coastal Forest ◽  
Metal Pollutants ◽  
Heavy Metal Concentrations ◽  
Measurement Results ◽  
West Sumatra ◽  
Heavy Metal Pollutants

In the South Coastal Forest area, West Sumatra, a luminous mushroom with the species Neonothopanus Sp. This research was conducted with the aim of seeing the effect of heavy metals on the bioluminescence reaction of luminous mushrooms. Starting from the effect of heavy metal concentrations on the intensity and inhibition coefficient of luminous mushroom biolumination. From the measurement results, the maximum intensity value of luminous mushrooms is 499.6 au occurring at a wavelength of 505 nm. At a wavelength of 505 nm, visible light is produced in green. The results obtained are in accordance with observations, because the light emitted by the glowing mushroom is green. If the concentration of heavy metals is greater, the intensity of the bioluminescent fungus (Neonothopanus sp) will decrease. The type of heavy metal affects the intensity of the fungus biolumination. The greatest decrease in intensity occurred in copper (Cu) and iron (Fe), zinc (Zn) and lead (Pb). If the heavy metal concentration is greater, the inhibition coefficient will be smaller. The greatest inhibition coefficient due to the presence of heavy metals occurs in copper (Cu) then iron (Fe), zinc (Zn) and the smallest is lead (Pb).

Airborne environmental fine particles induce intense inflammatory response regardless of the absence of heavy metal elements

2020 ◽  
Vol 195 ◽  
pp. 110500
Author(s):  
Mariana Colaço ◽  
Alana Duarte ◽  
Mónica Zuzarte ◽  
Benilde F.O. Costa ◽  
Olga Borges
Keyword(s):  
Heavy Metal ◽  
Inflammatory Response ◽  
Fine Particles ◽  
Metal Elements ◽  
Heavy Metal Elements

Source analysis of heavy metal elements of PM2.5 in canteen in a university in winter

2021 ◽  
Vol 244 ◽  
pp. 117879 ◽  
Author(s):  
Yuanyuan Niu ◽  
Fang Wang ◽  
Songmin Liu ◽  
Wenjie Zhang
Keyword(s):  
Heavy Metal ◽  
Source Analysis ◽  
Metal Elements ◽  
Heavy Metal Elements
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