scholarly journals Recent advances in the analysis of non-traditional stable isotopes by multi-collector inductively coupled plasma mass spectrometry

2017 ◽  
Vol 32 (10) ◽  
pp. 1848-1861 ◽  
Author(s):  
Dawei Lu ◽  
Tuoya Zhang ◽  
Xuezhi Yang ◽  
Peng Su ◽  
Qian Liu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Heavy Metal ◽  
Stable Isotopes ◽  
Inductively Coupled Plasma ◽  
Clear Definition ◽  
Metal Elements ◽  
Inductively Coupled ◽  
Stable Isotopic ◽  
Plasma Mass Spectrometry ◽  
Heavy Metal Elements

Non-traditional stable isotopes, with no clear definition yet, generally refer to isotopes beyond C, H, O, N, and S with small variations in natural stable isotopic compositions, such as isotopes of transition and heavy metal elements.

Visually sorting waste wood — an exploratory study

2021 ◽  
pp. 1-4
Author(s):  
Anna Schild ◽  
Julie Cool
Keyword(s):  
Mass Spectrometry ◽  
Heavy Metal ◽  
Exploratory Study ◽  
Inductively Coupled Plasma ◽  
Wood Preservatives ◽  
Waste Wood ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Heavy Metal Elements

Waste wood collected at the Vancouver landfill has been sorted based on the visibility of coatings, paints, and the green colorization of wood typically associated with wood preservatives. The sorted material was then ground and tested with an inductively coupled plasma mass spectrometry (ICP–MS) for heavy metal elements that are toxic or harmful to humans and (or) the environment. Results indicated that wood preservatives were not visually detectable but paints and coatings were. Therefore, the study demonstrated that visual sorting is not sufficiently accurate to distinguish between treated and clean or untreated waste wood.

scholarly journals Heavy metal elements in toiletries analyzed by INAA, ICP-MS and SEM-EDX

2011 ◽  
Vol 1 (1) ◽  
pp. 393-398
Author(s):  
E. Furuta ◽  
H. Minowa ◽  
K. Tagami ◽  
Y. Okada ◽  
H. Nakahara
Keyword(s):  
Heavy Metal ◽  
Detection Limit ◽  
Inductively Coupled Plasma ◽  
Particle Sizes ◽  
Metal Elements ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Heavy Metal Elements ◽  
High Concentrations

AbstractRecently, many toiletries claiming inclusion of platinum (Pt), silver (Ag) and gold (Au) as additives are sold in ordinary cosmetics shops. However, their concentrations are not clearly indicated. In the present work, these toiletries were analyzed for heavy metal elements by instrumental neutron activation analysis (INAA) and inductively coupled plasma mass spectrometry (ICP-MS), and the particle sizes were observed by scanning electron microscope (SEM) and the constitutions of the small particles were analyzed by energy dispersive X-ray spectroscopy (EDX). The concentrations of Pt in the toiletries observed were from 1 to 80 ppm. The lower detection limit of Pt by INAA was about 1 ppm because of the presence of sodium in high concentrations for those samples. Consequently, some toiletries which should have had Pt according to the manufactures were found not to contain Pt probably because it was less than the detection limit. On the other hand, there were a few toiletries that were found to contain Ag although the addition of Ag was not mentioned by the manufactures. It is considered that these non-indicated Ag were included as impurities of the added Au. The concentrations of the non-indicated Ag were even higher than those of the indicated Ag. A very small amount of Sr, which was nominated in the negative list of Japan, was also detected in 2 out of 5 kinds of toiletries analyzed by ICP-MS.

scholarly journals Study of magnesium bioavailability using stable isotopes and the inductively-coupled plasma mass spectrometry technique in the rat: single and double labelling approaches

1997 ◽  
Vol 77 (6) ◽  
pp. 957-970 ◽  
Author(s):  
Charles Coudray ◽  
Denise Pepin ◽  
Jean Claude Tressol ◽  
Jacques Bellanger ◽  
Yves Rayssiguier
Keyword(s):  
Mass Spectrometry ◽  
Stable Isotopes ◽  
Inductively Coupled Plasma ◽  
Double Labelling ◽  
Adaptation Period ◽  
Labelling Technique ◽  
Inductively Coupled ◽  
True Absorption ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

The present work aimed to investigate the feasibility of using stable isotopes and inductively-coupled plasma mass spectrometry (ICP/MS) to study Mg absorption in rats. Male Wistar rats, aged 7 weeks and weighing 180g, were used. They were fed on a semi-purified diet containing 1070mg Mg/kg, and had free access to feed and distilled water. In the first experiment, after a 16d adaptation period, two doses of enriched 25Mg (6 and 12mg) were administered by oral intubation, faeces and urine were collected daily and blood was sampled. Isotope ratios were determined by ICP/;MS. ‘True’ absorption values, using the faecal isotope data, were 0.63 and 0.56 in rats receiving 6 and 12mg 25Mg respectively, while apparent absorption was 0.50 for two successive periods of metabolic balance studies. Moreover, the oral isotope administration resulted in a measurable isotopic enrichment in plasma within hours which was still detectable on the third day following the isotope administration. In the second experiment, investigating the double labelling technique, similar rats were dosed Simultaneously with 5mg 26Mg orally (premixed with diet) and 0.29mg 25Mg intravenously. The calculated Mg true absorption values were very similar when calculated from blood or urine data (0.38) but were lower than that obtained from faecal data (0.50). The possible causes of such an unexpected difference and limits of the double labelling technique for Mg absorption are discussed here. Together these results indicate that although 25Mg and 26Mg isotopes have high natural abundance, the described methodology permits meaningful investigations of Mg bioavailability and metabolism

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