Matrix effects of carbon and bromine in inductively coupled plasma optical emission spectrometry

Wiltsche, Helmar; Winkler, Monika; Tirk, Paul

doi:10.1039/c5ja00237k

Cited by 49 publications

(20 citation statements)

References 35 publications

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“…Quantification of Br by ICP-MS was challenging due to the high energy of its first ionisation potential (11.8 eV), [11] and the presence of common polyatomic interferences with m/z = 79 or 81 (e.g. 40 Ar 39 K + or 31 P 16 H + or 40 Ar 40 Ar 1 H + for m/z = 81).…”

Section: Resultsmentioning

confidence: 99%

Tracking Reactions of Asymmetric Organo‐Osmium Transfer Hydrogenation Catalysts in Cancer Cells

et al. 2021

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Most metallodrugs are prodrugs that can undergo ligand exchange and redox reactions in biological media. Here we have investigated the cellular stability of the anticancer complex [OsII[(η6‐p‐cymene)(RR/SS‐MePh‐DPEN)] [1] (MePh‐DPEN=tosyl‐diphenylethylenediamine) which catalyses the enantioselective reduction of pyruvate to lactate in cells. The introduction of a bromide tag at an unreactive site on a phenyl substituent of Ph‐DPEN allowed us to probe the fate of this ligand and Os in human cancer cells by a combination of X‐ray fluorescence (XRF) elemental mapping and inductively coupled plasma‐mass spectrometry (ICP‐MS). The BrPh‐DPEN ligand is readily displaced by reaction with endogenous thiols and translocated to the nucleus, whereas the Os fragment is exported from the cells. These data explain why the efficiency of catalysis is low, and suggests that it could be optimised by developing thiol resistant analogues. Moreover, this work also provides a new way for the delivery of ligands which are inactive when administered on their own.

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Section: Resultsmentioning

confidence: 99%

Tracking Reactions of Asymmetric Organo‐Osmium Transfer Hydrogenation Catalysts in Cancer Cells

et al. 2021

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“…Among them, the plasma thermal pinch that consisted in the reduction of the plasma volume when the sample plug reached it. 33 As the supplied power was constant, the energy density in the plasma increased. 34,35 Magnesium ionic to atomic ratio Another parameter giving indication of the plasma thermal state is the magnesium ionic to atomic net emission intensity ratio.…”

Section: Argon Emission Intensitymentioning

confidence: 99%

Multielemental analysis of vegetable oils and fats by means of ICP-OES following a dilution and shot methodology

Martínez

Sánchez

Lefevre

et al. 2020

J. Anal. At. Spectrom.

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“…Coal digestion usually requires a high amount of concentrated acids, as HNO3, HF and HCl and high temperature and pressure. However, the final digests can present a high residual acidity and carbon content, which can cause interferences [29].…”

Section: Tablementioning

confidence: 99%

Determination of Se at low concentration in coal by collision/reaction cell technology inductively coupled plasma mass spectrometry

Henn

Rondan

Mesko

et al. 2018

Spectrochimica Acta Part B: Atomic Spectroscopy

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A method is proposed for the determination of selenium at low concentration in coal by collision/reaction cell technology inductively coupled plasma mass spectrometry (CRC-ICP-MS). Samples were decomposed by high pressure microwave-assisted wet digestion (MAWD) using 250 mg of coal, a mixture of 5 mL of 14.4 mol L-1 HNO3 and 1 mL of 40% HF and 70 min of heating program (200 ºC and 40 bar). Hydrogen gas used in the collision/reaction cell was investigated to minimize the argon-based interferences at m/z 77, 78 and 80. The rejection parameter (RPq) and the H2 gas flow rate were set to 0.45 and 4.8 mL min-1 , respectively. The use of H2 in the cell resulted in other polyatomic interferences, such as 76 Ge 1 H + , 79 Br 1 H + and 81 Br 1 H + , which impaired Se determination using 77 Se, 80 Se and 82 Se isotopes, thus Se determination was carried out by monitoring only 78 Se isotope. Selenium determination was performed in certified reference materials of coal (NIST 1635 and SARM 20) and an agreement better than 95% was observed between the results obtained by CRC-ICP-MS and the certified values. Under optimized conditions, the instrumental limit of detection was 0.01 µg L-1 and the method limit of detection was 0.01 µg g-1 , which was suitable for Se determination at very low concentration in coal.

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Matrix effects of carbon and bromine in inductively coupled plasma optical emission spectrometry

Cited by 49 publications

References 35 publications

Tracking Reactions of Asymmetric Organo‐Osmium Transfer Hydrogenation Catalysts in Cancer Cells

Tracking Reactions of Asymmetric Organo‐Osmium Transfer Hydrogenation Catalysts in Cancer Cells

Multielemental analysis of vegetable oils and fats by means of ICP-OES following a dilution and shot methodology

Determination of Se at low concentration in coal by collision/reaction cell technology inductively coupled plasma mass spectrometry

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