scholarly journals Arsenic and Heavy Metals Contamination of Soils Around Oyu Tolgoi and Tavan Tolgoi Mines, Located in The South Gobi Desert of Mongolia

2018 ◽  
Vol 7 (2.23) ◽  
pp. 260
Author(s):  
Galbadrakh Ragchaa ◽  
Temujin Enkhbat ◽  
Enkhtor Lkhamsuren
Keyword(s):  
Inductively Coupled Plasma ◽  
Essential Elements ◽  
Soil Samples ◽  
Heavy Elements ◽  
Open Pit ◽  
Windward Side ◽  
Gobi Desert ◽  
Central Mongolia ◽  
Inductively Coupled ◽  
The Government

In this work inductively coupled plasma - mass spectrometry (ICP-MS) method was used to determine content of harmful to human health heavy elements such as As, Cd, Cr, Pb, Th, U, and other essential elements Zn, Cu, Ni in soil samples collected around fence of two largest in Asia copper (Oyu Tolgoi) and coal (Tavan Tolgoi) deposits. The analyses revealed average content of arsenic in the examined soil samples is exceeding 1.4 times the maximum permissible limit. It is consistent with many previous studies emphasizing on a high occurrence of arsenic in soils, well waters of North and Central Mongolia. But the contents of copper in soil samples collected from three leeward locations of the copper mine Oyu Tolgoi are up to 2.18 times higher than the maximum permitted content established by the government standard of Mongolia. The contents of Cd, Ni, Pb, U, and Zn in soil probes collected from leeward locations of Ukhaa Khudag open pit mine of Tavan Tolgoi coal deposit are higher than that of in probes collected from the windward side of that by factor ranging from 1.34 to 1.64. These facts indicate possible transport and spread of heavy elements by wind from these intense operating open pit mines into adjacent dry and windy deserted region of Mongolia.  

scholarly journals Development of a Tellurium Speciation Study Using IC-ICP-MS on Soil Samples Taken from an Area Associated with the Storage, Processing, and Recovery of Electrowaste

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2651
Author(s):  
Magdalena Jabłońska-Czapla ◽  
Katarzyna Grygoyć
Keyword(s):  
Inductively Coupled Plasma ◽  
Total Concentration ◽  
Soil Samples ◽  
Chemical Extraction ◽  
Soil Extraction ◽  
Inductively Coupled ◽  
Sequential Chemical Extraction ◽  
Icp Ms ◽  
Speciation Study ◽  
Plasma Mass Spectrometry

The optimization and validation of a methodology for determining and extracting inorganic ionic Te(VI) and Te(IV) forms in easily-leached fractions of soil by Ion Chromatography-Inductively Coupled Plasma-Mass Spectrometry (IC-ICP-MS) were studied. In this paper, the total concentration of Te, pH, and red-ox potential were determined. Ions were successfully separated in 4 min on a Hamilton PRPX100 column with 0.002 mg/kg and 0.004 mg/kg limits of detection for Te(VI) and Te(IV), respectively. Soil samples were collected from areas subjected to the influence of an electrowaste processing and sorting plant. Sequential chemical extraction of soils showed that tellurium was bound mainly with sulphides, organic matter, and silicates. Optimization of soil extraction allowed 20% average extraction efficiency to be obtained, using 100 mM citric acid as the extractant. In the tested soil samples, both tellurium species were present. In most cases, the soils contained a reduced Te form, or the concentrations of both species were similar.

scholarly journals Chemistry of Tropical Eucheumatoids: Potential for Food and Feed Applications

Biomolecules ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 804
Author(s):  
Andrea Ariano ◽  
Nadia Musco ◽  
Lorella Severino ◽  
Anna De Maio ◽  
Annabella Tramice ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Inductively Coupled Plasma ◽  
Mineral Content ◽  
Kappaphycus Alvarezii ◽  
Optical Emission ◽  
Essential Elements ◽  
Feed Additive ◽  
Inductively Coupled ◽  
Food And Feed

The use of seaweeds as additives in animal nutrition may be a valid option to traditional feed as they represent a rich source of minerals, carbohydrates and antioxidants. The aim of this study was to analyze the chemical composition and in vitro antioxidant capacity of two tropical eucheumatoids, Kappaphycus alvarezii and Kappaphycus striatus, in Malaysian wild offshore waters. The chemical analysis was performed via inductively coupled plasma–optical emission spectroscopy for evaluating the concentration of toxic (Cd, Pb, Hg, As) and essential elements (Mn, Fe, Cu, Ni, Zn, Se); NMR spectroscopy was used for carrageenans investigation. Furthermore, the soluble and fat-soluble antioxidant capacities were determined by FRAP, DPPH and ABTS assays. The chemical analysis revealed a higher content of trace elements in K. alvarezii as compared to K. striatus, and both exhibited a high mineral content. No significant differences in metal concentrations were found between the two species. Both samples showed a mixture of prevailing κ- and t-carrageenans. Finally, the levels of soluble and fat-soluble antioxidants in K. alvarezii were significantly higher than in K. striatus. Our findings suggest that K. alvarezii could be used as a potential feed additive because of its favorable chemical and nutritional features.

Heavy metal and essential elements in beers from turkey market: A risk assessment study

2021 ◽  
pp. 096032712199321
Author(s):  
M Charehsaz ◽  
S Helvacıoğlu ◽  
S Çetinkaya ◽  
R Demir ◽  
O Erdem ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Inductively Coupled Plasma ◽  
Hazard Quotient ◽  
Daily Intake ◽  
Hazard Index ◽  
Carcinogenic Risk ◽  
Essential Elements ◽  
Inductively Coupled ◽  
Multiple Heavy Metals

In this study, the level of arsenic (As), lead (Pb) and cadmium (Cd) and also essential elements in beer samples consumed in Turkey were investigated using the inductively coupled plasma mass spectrometry (ICP-MS) method. The heavy metal-induced non-carcinogenic and carcinogenic risks were calculated. For essential elements, the calculated estimated daily intake of iron (Fe), copper (Cu), selenium (Se) and cobalt (Co) from beer consumption were compared with their toxicity reference values. Tukey post-hoc test showed that As was found at a significantly higher level when compared to Pb. Also, a significant correlation was found between As level and alcohol by volume percent. All samples had a hazard quotient and hazard index <1, indicating no non-carcinogenic risk from exposure to single or multiple heavy metals. Some samples exceeded the threshold limit of acceptable cancer risk for As in the high beer consumer group. This assessment showed that in addition to health implications based on the alcohol content of beer, there might be a carcinogenic risk associated with the heavy metals content of these beverages.

scholarly journals Determination of 27 Elements in Animal Feed by Inductively Coupled Plasma-Mass Spectrometry

2019 ◽  
Vol 102 (2) ◽  
pp. 434-444 ◽  
Author(s):  
Thomas King ◽  
Robert Sheridan
Keyword(s):  
Inductively Coupled Plasma ◽  
Animal Feed ◽  
Certified Reference Materials ◽  
Microwave Digestion ◽  
Animal Health ◽  
Essential Elements ◽  
Inductively Coupled ◽  
Z Scores ◽  
Materials Used ◽  
Accuracy And Repeatability

Abstract A method was developed to determine 27 elements (aluminum, arsenic, boron, cadmium, calcium, chromium, cobalt, copper, iron, lead, magnesium, manganese, mercury, molybdenum, nickel, phosphorus, potassium, selenium, sodium, sulfur, vanadium, zinc, antimony, uranium, beryllium, thallium, and thorium) in animal feeds and pet foods using closed vessel microwave digestion and inductively coupled plasma-massspectrometry. These elements can adversely affect animal health when amounts become excessive or deficient in food. For potentially toxic elements, the target LOQ was determined to be 1/10 the lowest maximum tolerable level (MTL) for the most sensitive animal species. For nutritionally essential elements,the target LOQ was determined to be 1/10 the concentration that would be considered deficient in feed if that level is lower than 1/10 the lowest MTL. The targeted high end of the quantitation range wasselected as twice the highest MTL. A single-laboratory validation (SLV) was performed to determine theaccuracy and precision of the method, and the resultswere evaluated with respect to predetermined performance characteristics. The test materials used in the SLV included two National Institute of Standardsand Technology certified reference materials, two Association of American Feed Control Officials (AAFCO) check samples, and one in-house previously analyzed feed sample. The concentrations of each elementdetermined were the result of spiked analyte,incurred analyte, or a combination of spiked and incurredanalyte. All samples were analyzed seven times on different days at 2 × LOQ and at the midrangeconcentration. For most data, the results of the SLV met or exceeded the criteria for accuracy and repeatability. For accuracy, K at the midrange level had a mean recovery of 95%, which is just below the low preferred accuracy threshold of 97%. For repeatability, all the 2 × LOQ CVr values were below the preferred values. Be, Cr, Ni, Na,Mn, and S all had midrange CVr values exceeding the preferred values. Be had the highest midrange CVr value of 9.93. Eight AAFCO check samples were also analyzed to determine the method’s accuracy and repeatability for elements at the manufacturer’s claimed levels. For accuracy, all results had z-scores &lt;1.5. For repeatability, three CVr values from two AAFCO check samples were greater than the preferred limits.

scholarly journals Evaluation of Selected Essential Elements in Khalas Dates from Date Palm Determined by Inductively Coupled Plasma-Mass Spectrometry

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Eid I. Brima
Keyword(s):  
Mass Spectrometry ◽  
Saudi Arabia ◽  
Inductively Coupled Plasma ◽  
Daily Intake ◽  
Essential Elements ◽  
Limited Information ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Wet Weight

In terms of nutrition, dates are an important commodity because they are a source of carbohydrates and minerals. Saudi Arabia is the second largest producer of dates worldwide. Khalas is the tenth most popular date type in the Kingdom of Saudi Arabia (KSA), but only limited information related to the levels of essential nutrients in Khalas dates is available. The concentrations of Mn, Cu, Zn, and Se were determined using inductively coupled plasma-mass spectrometry (ICP-MS). The average concentrations in wet weight were as follows (mg/kg): Mn (2.90 ± 0.54), Cu (1.78 ± 0.64), Zn (1.72 ± 0.42), and Se (0.10 ± 0.06). The calculated intakes (μg/kg bw day) per 100 g dates for each element were as follows: Mn (4.14), Cu (2.54), Zn (2.46), and Se (0.14), which represent 0.14%, 0.51%, 0.25%, and 0.2%, respectively, of the provisional maximum tolerable daily intake (PMTDI) recommended by the EFSA/WHO. It was found that levels of the analysed essential elements in up to 100 g of Khalas dates do not exceed the level set by the EFSA/WHO.

scholarly journals Determination of 237Np in soil samples using inductively coupled plasma mass spectrometry.

RADIOISOTOPES ◽  
1989 ◽  
Vol 38 (3) ◽  
pp. 153-154 ◽  
Author(s):  
Chang-Kyu KIM ◽  
Yuichi TAKAKU ◽  
Masayoshi YAMAMOTO ◽  
Hisao KAWAMURA ◽  
Kunio SHIRAISHI ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Soil Samples ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry
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