Analytical procedures for the determination of selected trace elements in peat and plant samples by inductively coupled plasma mass spectrometry

Krachler, Michael; Mohl, C.; Emons, Hendrik; Shotyk, William

doi:10.1016/s0584-8547(02)00068-x

Cited by 151 publications

(83 citation statements)

References 20 publications

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“…Elemental geochemical measurements were made on 200 mg of dried and powdered peat samples after digestion at high pressure (120 bars) and high temperature (240°C) in a microwave autoclave in Germany (Institute of Geochemistry Environmental, University of Heidelberg) following Krachler et al (2002). Peat samples, blanks and vegetation standards were dissolved in 3 ml HNO 3 (65%, analyticalreagent grade and further purified by sub-boiling distillation) and 0.1 ml HBF 4 (50%, purum).…”

Section: Methodsmentioning

confidence: 99%

Deciphering human–climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500years (Misten bog, Belgium)

Fagel

Allan

Roux

et al. 2014

Geochimica et Cosmochimica Acta

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, et al.. Deciphering human-climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500 years (Misten bog, Belgium). Geochimica et Cosmochimica Acta, Elsevier, 2014Elsevier, , vol. 135, pp. 288-306. 10.1016Elsevier, /j.gca.2014 To cite this Fagel, Nathalie and Allan, Mohammed and Le Roux, Gaël and Mattielli, Nadine and Piotrowska, Natalia and Sikorski, Jaroslaw AbstractA high-resolution peat record from Eastern Belgium reveals the chronology of dust deposition for the last 2500 years. REE and lithogenic elements in addition to Nd and Pb isotopes were measured in a 173 cm age-dated peat profile and provide a continuous chronology of dust source and intensity. Calculated dust flux show pronounced increases c. 300 BC, 600 AD, 1000 AD, 1200 AD and from 1700 AD, corresponding to local and regional human activities combined with climate change.The Industrial Revolution samples (1700-1950 AD) are characterised by a significant enrichment in Sc-normalised REE abundance (sum REE/Sc > 25) due to intensive coal combustion. For the pre-Industrial Revolution samples, the Sc-normalised REE abundance (10 < Sum REE/Sc < 25) and the eNd variability (À13 to À9) are interpreted by a mixing between dust particles from local soils and long-range transport of desert particles. Three periods characterised by dominant-distal sources (c. 320 AD, 1000 AD and 1700 AD) are consistent with local wetter-than-average intervals as indicated by a lower degree of peat humification. Local erosion prevails during the drier (higher humification) intervals (100 AD, 600 AD). On a global scale, more distal supplies are driven during colder periods, in particular during the Oort and Maunder minima, suggesting a potential link between dust deposition and global climate. Combining REE abundance, fractionation between Light REE and Heavy REE and Nd isotope data in ombrotrophic peat allows one to distinguish between dust flux changes related to human and climate forcings.

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Section: Methodsmentioning

confidence: 99%

Deciphering human–climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500years (Misten bog, Belgium)

Fagel

Allan

Roux

et al. 2014

Geochimica et Cosmochimica Acta

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“…Traditionally, Ag + had been detected by atomic absorption spectroscopy [25] or inductivelycoupled plasma mass spectroscopy [26], but recently some authors had focused in its determination using CQDs; in fact, two different mechanisms to detect Ag + have been described. A quenching effect on CQD fluorescence has been observed for CQDs synthesized from lactose and then functionalized with mercaptosuccinic acid [27] as a result of the thiolAg interaction.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent carbon quantum dot hydrogels for direct determination of silver ions

Cayuela

Soriano

Kennedy

et al. 2016

Talanta

115

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Citation for published item:gyuelD engelin nd orinoD wF vur nd uennedyD turt F nd teedD tF F nd l¡ relD wF @PHITA 9pluoresent ron quntum dot hydrogels for diret determintion of silver ionsF9D lntFD ISI F ppF IHHEIHSF Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. ABSTRACTThe paper reports for the first time the direct determination of silver ion (Ag + ) using luminescent Carbon Quantum Dot hydrogels (CQDGs). Carbon Quantum Dots (CQDs) with different superficial moieties (passivate-CQDs with carboxylic groups, thiol-CQDs and amine-CQDs) were used to prepare hybrid gels using a low molecular weight hydrogelator (LMWG). The use of the gels results in considerable fluorescence enhancement and also markedly influences selectivity. The most selective CQDG system for Ag + ion detection proved to be those containing carboxylic groups onto their surface. The selectivity towards Ag + ions is possibly due to its flexible coordination sphere compared with other metal ions.This fluorescent sensing platform is based on the strong Ag-O interaction which can quench the photoluminescence of passivate-CQDs (p-CQDs) through charge transfer. The limit of detection (LOD) and quantification (LOQ) of the proposed method were 0.55 and 1.83 µg·mL -1 , respectively, being applied in river water samples.

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“…24 Quite a number of studies had showed that the addition of a small volume of HF was required for complete digestion of plant samples for determination of the elements. [25][26][27][28][29][30] Therefore, HF was also used in the present digestion procedure for the complete digestion of samples.…”

Section: Optimization Of the Volumes Of Acids For Digestionmentioning

confidence: 99%

Development of a Certified Reference Material (NMIJ CRM 7505-a) for the Determination of Trace Elements in Tea Leaves

et al. 2011

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Analytical procedures for the determination of selected trace elements in peat and plant samples by inductively coupled plasma mass spectrometry

Cited by 151 publications

References 20 publications

Deciphering human–climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500years (Misten bog, Belgium)

Deciphering human–climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500years (Misten bog, Belgium)

Fluorescent carbon quantum dot hydrogels for direct determination of silver ions

Development of a Certified Reference Material (NMIJ CRM 7505-a) for the Determination of Trace Elements in Tea Leaves

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