scholarly journals Does Belgian Holocene speleothem records solar forcing and cold events?

2017 ◽  
Author(s):  
Mohammed Allan ◽  
Adrien Deliège ◽  
Sophie Verheyden ◽  
Samuel Nicolay ◽  
Yves Quinif ◽  
...  
Keyword(s):  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
Climate Forcing ◽  
Solar Forcing ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Cold Events ◽  
Forcing Mechanisms ◽  
Several Intervals

Abstract. We present a decadal-centennial scale Holocene climate record based on trace elements contents from a 65 cm stalagmite (Père Noël) from Belgian Père Noël cave. Père Noël (PN) stalagmite covers the last 12.7 ka according to U/Th dating. High spatial resolution measurements of trace elements (Sr, Ba, Mg and Al) were done by Laser-Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Trace elements profiles were interpreted as environmental and climate changes in the Han-sur-Lesse region. Power spectrum estimators and continuous wavelet transform were applied on trace elements time series to detect any statistically significant periodicities in the PN stalagmite. Spectral analyses reveal decadal to millennial periodicities (i.e., 68–75, 133–136, 198–209, 291–358, 404–602, 912–1029 and 2365–2670 yr) in the speleothem record. Results were compared to reconstructed sunspot number data to determine whether solar signal is presents in PN speleothem. The occurrence of significant solar periodicities (i.e., cycles of Gleissberg, de Vries, unnamed 500 years, Eddy and Hallstat) supports for an impact of solar forcing on PN speleothem trace elements contents. Moreover, several intervals of significant rapid climate change were detected during the Holocene at 10.3, 9.3–9.5, around 8.2, 6.4–6.2, 4.7–4.5, and around 2.7 ka BP. Those intervals are similar to the cold events evidenced in different natural paleoclimate archivers, suggesting common climate forcing mechanisms related to changes in solar irradiance.

Analysis of minor and trace elements in milk and yogurts by inductively coupled plasma-mass spectrometry (ICP-MS)

2014 ◽  
Vol 147 ◽  
pp. 220-224 ◽  
Author(s):  
Naeem Khan ◽  
In Seon Jeong ◽  
In Min Hwang ◽  
Jae Sung Kim ◽  
Sung Hwa Choi ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
Minor And Trace Elements ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

scholarly journals Concentrations of Trace Elements in Bottled Water Consumed in Angono, Philippines

2020 ◽  
Vol 54 (5) ◽  
Author(s):  
Seiji Maruyama ◽  
Hisaaki Kato ◽  
Takafumi Hirata ◽  
Noel R. Juban
Keyword(s):  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
The Philippines ◽  
Bottled Water ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Guideline Value ◽  
Guideline Values ◽  
Plasma Mass Spectrometry ◽  
Who Guideline

Introduction. We analyzed the concentrations of the trace elements [chromium (Cr), arsenic (As), cadmium (Cd),cesium (Cs), lead (Pb), thorium (Th), and uranium (U)] in commercial bottled water consumed in the town of Angono,Rizal province, Luzon island, Philippines to evaluate the health risks of the trace elements in drinking water. Thereare some arguments that water resources available in the Philippines are heavily polluted by various materials, inparticular heavy metal elements. Method. The concentrations of seven trace elements in commercial bottled water produced and consumed in thePhilippines were analyzed using a solution nebulization inductively coupled plasma mass spectrometry (SN−ICP−MS). Result. The concentrations of the trace elements except for Cs, which does not yet have a WHO guideline value,in the locally produced bottled water were below the WHO guideline values. The Cs concentrations (<0.6 μg/L) ofthe bottled water of the Philippines were generally similar to those of the bottled water produced and consumed inother countries such as Japan, China, and Indonesia. Conclusion. The concentrations of trace elements in bottled water consumed in Angono, Philippines can be regardedas being at safe levels, as well as those of daily life water (i.e. tap, well, and spring water) consumed in the said town.

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