scholarly journals Evaluation of the Role of Matrix Matching for LA-ICP-MS Calibration Approaches in Quantitative Elemental Analysis of Tooth Enamel

2018 ◽  
Vol 62 (2) ◽  
Author(s):  
Barbara Wagner ◽  
Olga Syta ◽  
Luiza Kępa ◽  
Ewa Bulska ◽  
Irena Segal ◽  
...  
Keyword(s):  
Elemental Composition ◽  
Inductively Coupled Plasma ◽  
Tooth Enamel ◽  
Inductively Coupled ◽  
Apatite Crystals ◽  
Icp Ms ◽  
The Matrix ◽  
Plasma Mass Spectrometry ◽  
Calibration Approach

<p>A mineral apatite –based calibration approach for Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) was proposed in this work to be used for quantitative multielemental analysis of tooth enamel samples. Tooth enamel is composed mainly of hydroxyapatite therefore natural apatite crystals were expected to fit the matrix. Mineral samples were partially digested and quantitatively analyzed in respect of their bulk, elemental composition by means of ICP-MS/OES. The obtained quantitative data were used to construct the LA-ICP-MS calibration curves based on the apatite crystals for the selected 32 elements. The correlation coefficient values were calculated for each element and varied from none correlation for the most heterogeneous element (Al) to the value above 0.99 (U, REE, etc.), while calibration curve based on 3 selected mineral samples was applied. The usefulness of the proposed calibration approach was evaluated during investigations of elemental composition of tooth enamel and reference materials (NIST 1400, NIST 1486) leading to the promising results.</p>

Dried droplet calibration approach for the analysis of inorganic nonmetallic materials by laser ablation-inductively coupled plasma-mass spectrometry

2020 ◽  
Vol 35 (7) ◽  
pp. 1441-1449
Author(s):  
Linqian Guo ◽  
Qing Li ◽  
Yirui Chen ◽  
Guoxia Zhang ◽  
Yisheng Xu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Quantitative Analysis ◽  
Laser Ablation ◽  
Inductively Coupled Plasma ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Calibration Approach

A simple and general dried droplet calibration approach was developed for the quantitative analysis of elements in inorganic nonmetallic materials using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS).

scholarly journals A dried droplet calibration approach for the analysis of solid samples through laser ablation – inductively coupled plasma mass spectrometry

2017 ◽  
Vol 32 (3) ◽  
pp. 587-596 ◽  
Author(s):  
Ángela Villaseñor ◽  
Caroline Greatti ◽  
Marina Boccongelli ◽  
José Luis Todolí
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Inductively Coupled Plasma ◽  
Sample Surface ◽  
Solid Samples ◽  
Accurate Analysis ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Calibration Approach

Liquid standards are deposited, dried and ablated from the solid sample surface for accurate analysis through laser ablation ICP-MS.

scholarly journals Multi-Modal Mass Spectrometric Imaging of Uveal Melanoma

Metabolites ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 560
Author(s):  
Laura M. Cole ◽  
Joshua Handley ◽  
Emmanuelle Claude ◽  
Catherine J. Duckett ◽  
Hardeep S. Mudhar ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Cancer Metastasis ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Ionisation Mass Spectrometry ◽  
Plasma Mass Spectrometry ◽  
Tumour Periphery ◽  
Modal Mass

Matrix assisted laser desorption ionisation mass spectrometry imaging (MALDI-MSI), was used to obtain images of lipids and metabolite distribution in formalin fixed and embedded in paraffin (FFPE) whole eye sections containing primary uveal melanomas (UM). Using this technique, it was possible to obtain images of lysophosphatidylcholine (LPC) type lipid distribution that highlighted the tumour regions. Laser ablation inductively coupled plasma mass spectrometry images (LA-ICP-MS) performed on UM sections showed increases in copper within the tumour periphery and intratumoural zinc in tissue from patients with poor prognosis. These preliminary data indicate that multi-modal MSI has the potential to provide insights into the role of trace metals and cancer metastasis.

Experience in using high matrix introduction (HMI) technology for the analysis of lead by inductively coupled plasma mass-spectrometry (ICP-MS)

2021 ◽  
Vol 87 (7) ◽  
pp. 17-22
Author(s):  
Е. M. Dvoryanchikova ◽  
К A. Dzhevello ◽  
D. D. Galuzin
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Sample Introduction ◽  
Injection System ◽  
Solute Content ◽  
Inductively Coupled ◽  
Icp Ms ◽  
The Matrix ◽  
Plasma Mass Spectrometry ◽  
High Matrix

The impurities contained in lead and lead-based alloys, which are widely used in various branches of industry, i.e., nuclear, medical, electrical engineering, etc., affect their physicochemical properties which necessitates developing of the reliable method for the impurity determination. Photometric, spectral, and chemical — spectral methods used to address this problem are labor-intensive and do not always have the required sensitivity. A method of inductively coupled plasma mass spectrometry (ICP-MS) coupled with High Matrix Introduction (HMI) technology has been proposed as alternative easy to use procedure designed to be more sensitive. The Agilent HMI Sample Injection System provides inline dilution of the sample aerosol (supplied from the spray chamber to the burner) with pure argon. This method of sample introduction provides for analysis of the solutions with a solute content of up to 1% and higher. The aerosol dilution reduces concentration of the matrix and solvent at the inductively coupled plasma interface without conventional dilution. In this case, the matrix suppression of impurities is almost eliminated and CeO+/Ce+ is reduced to 0.2%, while the typical CeO+/Ce+ ratio for the Agilent 7500 mass spectrometers is 1 – 2%, but no more than 3%. We present application of this method to the analysis of Mg, Ca, Fe, Cu, As, Ag, Sn, Sb, Bi in lead by an Agilent 7500cx ICP-MS with preliminary acid digestion of lead samples in a microwave autoclave. The use of the HMI system made it possible to exclude the stage of sample dilution, reducing the possibility of sample contamination with a diluent, and to determine the content of impurities in a highly concentrated matrix at a level of 10–4 – 10–5 %. The efficiency of the method, as well as the possibility of using multi-element standard solutions prepared with 1% nitric acid for analysis of the samples with high lead content is shown.

scholarly journals Determination of Some Elements in Legumes Using ICP-MS and EDXRF Methodology Applications

2021 ◽  
Vol 68 (4) ◽  
pp. 913-920
Author(s):  
Lovro Sinkovič ◽  
Marijan Nečemer ◽  
Barbara Pipan ◽  
Vladimir Meglič
Keyword(s):  
Elemental Composition ◽  
Inductively Coupled Plasma ◽  
Certified Reference Materials ◽  
Principal Component ◽  
Inductively Coupled ◽  
Cu Content ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Analytical Research

The current study involves two analytical research techniques, inductively coupled plasma-mass spectrometry (ICP-MS) and energy dispersive X-ray fluorescence (EDXRF) spectroscopy, used to determine the elemental composition of different legumes usually produced and consumed in Slovenia. Results indicate that data obtained using these methods are in agreement with certified reference materials. In total, nineteen elements were determined from twenty legume samples. An intercomparison between four macro- (P, S, K, Ca) and three microelements (Fe, Zn, Mo) measured using ICP-MS and EDXRF methods showed a strong correlation. The EDXRF was found to be a cheaper, simpler and more environmentally friendly method for determination of elements P, S, Cl, K, Ca, Fe, Zn, Mo, Sr, Rb, Ti and Br in legumes, while for the identification and determination of Na, Mg, V, Cr, Mn, Co and Cu content ICP‐MS was the method of choice due to its excellent sensitivity and accuracy. Using principal component analysis (PCA), the samples of the studied legumes were classified into four groups according to their elemental composition.

scholarly journals Examining changes in the organisation of earthenware production in a prehispanic Philippine polity using laser ablation-inductively coupled plasma-mass spectrometry

2013 ◽  
Vol 1 (1) ◽  
pp. 8
Author(s):  
Lisa C. Niziolek
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Inductively Coupled Plasma ◽  
Local Level ◽  
The Philippines ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Archaeological Work ◽  
Plasma Mass Spectrometry

Although significant historical research has been done on traditional Southeast Asian kingdoms and chiefdoms, little archaeological work has been undertaken on changes in the economic systems of pre-colonial maritime societies in Asia, especially on the role of specialised craft production in the development of pre-modern complex societies. This project examines changes in the organisation of earthenware production in the prehispanic coastal polity of Tanjay in the Philippines (A.D. 500-1600). More than 250 earthenware pieces from six archaeological sites from the Tanjay region were analysed using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) at Chicago’s Field Museum. Ceramic samples were drawn from two residential zones in central Tanjay, an elite neighborhood and a non-elite area; two secondary settlements located several kilometers upriver; an upland, swidden farming site; and a contemporaneous, and likely competing, coastal polity 40 km down the coast from Tanjay. Initially, it was expected that changes in the pattern of earthenware production in the Tanjay region would favour one scenario or the other – either continued production at dispersed, local sites or increased specialised and centralised production. So far, however, the preliminary ceramic compositional evidence indicates that both scenarios seem to have been taking place during the centuries prior to Spanish contact. Ceramic production appears to have continued on a local level, with potters from each site making pottery to be used by nearby inhabitants, but there also is evidence that sites, such as the elite Tanjay neighborhood, began to make ceramics expressly for local consumption by elites and for foreign trade.

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