17565
2008
eng
97
107
160
article
Springer
Wien
1
--
--
--
Analysis of pure copper - a comparison of analytical mehods
Microchimica acta
19632
10.1007/s00604-007-0849-1
0026-3672
1436-5073
Sonderstandort: Publica-Schrank
09.06.2008
Britta Lange
Sebastian Recknagel
Michael Czerwensky
Ralf Matschat
Matthias Michaelis
Burkhard Peplinski
Ulrich Panne
eng
uncontrolled
Pure copper
eng
uncontrolled
Elemental analytical mehtods
eng
uncontrolled
Reference material
eng
uncontrolled
Sample dissolution
Verlagsliteratur
Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
18605
2009
eng
1122
1128
3
29
article
Pergamon Press
New York, NY
1
--
--
--
Thermochemical treatment of sewage sludge ashes for phosphorus recovery
Phosphorus (P) is an essential element for all living organisms and cannot be replaced. Municipal sewage sludge is a carrier of phosphorus, but also contains organic pollutants and heavy metals. A two-step thermal treatment is suggested, including mono-incineration of sewage sludge and subsequent thermochemical treatment of the ashes. Organic pollutants are completely destroyed by mono-incineration. The resulting sewage sludge ashes contain P, but also heavy metals. P in the ashes exhibits low bioavailability, a disadvantage in farming. Therefore, in a second thermochemical step, P is transferred into mineral phases available for plants, and heavy metals are removed as well. The thermochemical treatment was investigated in a laboratory-scale rotary furnace by treating seven different sewage sludge ashes under systematic variation of operational parameters. Heavy metal removal and the increase of the P-bioavailability were the focus of the investigation. The present experimental study shows that these objectives have been achieved with the proposed process. The P-bioavailability was significantly increased due to the formation of new mineral phases such as chlorapatite, farringtonite and stanfieldite during thermochemical treatment.
Waste management
20763
10.1016/j.wasman.2008.09.011
0956-053X
Sonderstandort: Publica-Schrank
17.12.2008
Christian Adam
Burkhard Peplinski
Matthias Michaelis
Gerd Kley
Franz-Georg Simon
eng
uncontrolled
P-recovery
eng
uncontrolled
Sewage sludge ash
eng
uncontrolled
Thermochemical treatment
eng
uncontrolled
Mineral phases
eng
uncontrolled
X-ray diffraction
Verlagsliteratur
Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
20938
2010
eng
40
43
25
article
Royal Society of Chemistry
London
1
--
--
--
Study on microscopic homogeneity of polymeric candidate reference materials BAM H001-BAM H010 by means of synchrotron µ-XRF and LA-ICP-MS
In this study the microscopic homogeneity of the newly developed plastic reference materials BAM H001-BAM H010 was investigated. The materials consist of an acrylonitryle-butadien-styrene terpolymer, doped with different amounts of the elements Br, Cd, Cr, Hg and Pb. For the quantitative determination of the degree of homogeneity, a procedure proposed by Kempenaers et al. (Fresenius J. Anal. Chem., 2001, 369, 733-737) was used. On every sample an extensive number of different points were analyzed and standard deviation for every element mentioned above was used to calculate a minimal sampling mass that is necessary to reach a certain level of uncertainty caused by inhomogeneity (mmin,5%). The experiments were taken out with synchrotron µ-XRF (SR µ-XRF) at BESSYII in Berlin and by laser ablation inductively coupled plasma mass spectroscopy (LA-ICP-MS). The calculated values for mmin,5% of both techniques showed comparable results for all elements. It could be shown that the materials are suitable for calibration of micro analytic techniques if at least 64 µg are used.
Journal of analytical atomic spectrometry
23273
10.1039/b917008a
0267-9477
1364-5544
Sonderstandort: Publica-Schrank
01.03.2010
C. Simons
C. Mans
S. Hanning
A. Janßen
Martin Radtke
Uwe Reinholz
Markus Ostermann
Matthias Michaelis
Julia Wienold
D. Alber
M. Kreyenschmidt
eng
uncontrolled
XRF
eng
uncontrolled
LA-ICP-MS
eng
uncontrolled
RoHS
eng
uncontrolled
CRM
Verlagsliteratur
Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
29703
2013
eng
S425
S435
S2
28
article
JCPDS
Swarthmore, Pa.
1
--
--
--
Evidence of formation of the tridymite form of AlPO4 in some municipal sewage sludge ashes
Evidence is provided that the tridymite component observed in the X-ray diffraction patterns of some sewage sludge ashes (SSAs) should not be interpreted as the tridymite modification of SiO2 but as the tridymite form of AlPO4. This proof is based on a combined X-ray Powder Diffraction (XRD), X-ray fluorescence (XRF) and Mossbauer spectroscopy investigation of two SSAs produced at two fluidized bed incineration facilities, located in different municipalities and operated differently. The structural and chemical characterization was carried out on the 'as received' SSA samples as well as on the residues of these two SSAs pretreated by leaching in citric acid. In addition, direct proof is presented that the tridymite form of AlPO4 does crystallize from X-ray amorphous precursors under conditions that mimic the huge heating rate and short retention time (just seconds at T ≈ 850 °C) typical for fluidized bed incinerators.
Powder diffraction
32633
10.1017/S0885715613000869
0885-7156
05.12.2013
Burkhard Peplinski
Christian Adam
Burkart Adamczyk
Ralf Müller
Reinhard Schadrack
Matthias Michaelis
Franziska Emmerling
H. Reuther
Michael Menzel
eng
uncontrolled
Aluminium phosphate
eng
uncontrolled
Ash
eng
uncontrolled
Fly ash
eng
uncontrolled
Incinerator ash
eng
uncontrolled
Sewage sludge ash
eng
uncontrolled
Tridymite form
Verlagsliteratur
Datei im Netzwerk der BAM verfügbar ("Closed Access")
19349
2009
eng
277
280
5
14
article
Springer
Berlin
1
--
--
--
Certification of the mass fractions of Pt, Pd and Rh in a used car catalyst reference material
The high economic value of catalysts containing the platinum group elements platinum, rhodium and palladium as active components causes the need to be able to measure the precious metal loading with small uncertainty and to have suitable certified reference materials fulfilling high demands on the quality of the certified values. In European Reference Material ERM®-EB504, a used cordierite-based car catalyst material, mass fractions of platinum, palladium and rhodium were certified. The raw material was milled, homogenised and annealed before analysis. Seventeen laboratories experienced in precious metals analysis participated in the certification interlaboratory comparison, most of them analysing with inductively coupled plasma optical emission spectrometry using different sample pretreatment techniques. Homogeneity testing was carried out using X-ray fluorescence spectrometry. The certified mass fractions of Pt, Pd and Rh and their expanded uncertainties (k = 2) in ERM®-EB504 are (1777 ± 15), (279 ± 6) and (338 ± 4) mg/kg respectively.
Accreditation and quality assurance
21563
10.1007/s00769-009-0508-9
0949-1775
1432-0517
Sonderstandort: Publica-Schrank
13.05.2009
Sebastian Recknagel
Matthias Michaelis
eng
uncontrolled
Precious metals
eng
uncontrolled
CRM
eng
uncontrolled
European reference material
eng
uncontrolled
Platinum
eng
uncontrolled
Rhodium
eng
uncontrolled
Palladium
eng
uncontrolled
ICP OES
Verlagsliteratur
Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
23986
2011
eng
530
535
3
31
article
Elsevier Ltd.
New York, NY
1
--
--
--
Elemental analysis of printed circuit boards considering the ROHS regulations
The EU RoHS Directive (2002/95/EC of the European Parliament and of the Council) bans the placing of new electrical and electronic equipment containing more than agreed levels of lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyl (PBB) and polybrominated diphenyl ether (PBDE) flame retardants on the EU market. It necessitates methods for the evaluation of RoHS compliance of assembled electronic equipment. In this study mounted printed circuit boards from personal computers were analyzed on their content of the three elements Cd, Pb and Hg which were limited by the EU RoHS directive. Main focus of the investigations was the influence of sample pre-treatment on the precision and reproducibility of the results. The sample preparation steps used were based on the guidelines given in EN 62321. Five different types of dissolution procedures were tested on different subsequent steps of sample treatment like cutting and milling. Elemental analysis was carried out using ICP–OES, XRF and CV–AFS (Hg). The results obtained showed that for decision-making with respect to RoHS compliance a size reduction of the material to be analyzed to particles ≤1.5 mm can already be sufficient. However, to ensure analytical results with relative standard deviations of less than 20%, as recommended by the EN 62321, a much larger effort for sample processing towards smaller particle sizes might be required which strongly depends on the mass fraction of the element under investigation.
Waste management
26606
10.1016/j.wasman.2010.10.002
0956-053X
07.07.2011
Julia Wienold
Sebastian Recknagel
Holger Scharf
Marion Hoppe
Matthias Michaelis
eng
uncontrolled
RoHS
eng
uncontrolled
Printed circuit boards
eng
uncontrolled
Electrotechnical products
eng
uncontrolled
Elemental composition
Verlagsliteratur
Datei im Netzwerk der BAM verfügbar ("Closed Access")
20562
2009
eng
459
464
30 EPDIC 2008
article
Oldenbourg
München
Deutsche Gesellschaft für Kristallographie
1
--
--
--
Reaction sequences in the thermochemical treatment of sewage sludge ashes revealed by X-ray powder diffraction - A contribution to the European project SUSAN
The sequence of reactions accompanying the thermochemical treatment of an iron- and aluminium-bearing sewage sludge ash was ascertained by investigating two systematic series of samples. The ash was thermochemically treated in a lab-scale rotary furnace after mixing it with a chlorine-donor, either CaCl2 or MgCl2. Within each of these two sample series only a single process parameter, the reaction temperature, was varied, namely between 350 and 1050°C. It was found, that among the numerous crystalline phases present in the raw ash only quartz and hematite continue to exist after thermochemical treatments carried out at 1050°C, whereas all other components undergo at least one decomposition-recrystallization cycle. Some of the components re-crystallize even several times. It was proved that the restructuring of the calcium- and phosphorus-bearing mineral phases proceeds via the formation of chlorspodioside, Ca2PO4Cl. The influence of the type of chlorine-donor on the final product was elucidated in detail and - to the best of our knowledge - for the first time crystalline AlPO4 was found in a sewage sludge ash and its decomposition was investigated, too.
Zeitschrift für Kristallographie / Supplement issue
22870
10.1524/zksu.2009.0068
0930-486X
Sonderstandort: Publica-Schrank
Am 3. März 2010 hat Fr. Recknagel (PST) eine E-Mail von Hrn. Christian Adam (IV.3) an mich weitergeleitet, in der dieser erläutert, dass sein Artikel in der "Zeitschrift für Kristallographie / Supplement issue" in der Datenbank "Web of Science" zu finden ist und daher als "In MJL von ISI enthalten" eingestuft werden müsste. Meine Überprüfung hat dies bestätigt: Obwohl die Zeitschrift eine eigene ISSN und Jahrgangszählung hat (die nicht mit denen der übergeordneten "Zeitschrift für Kristallographie" übereinstimmen) und obwohl die Unterreihe "Zeitschrift für Kristallographie / New crystal structures", für die das gleiche gilt, einen eigenen Eintrag in der MJL hat, wird die Unterreihe "Supplement issue" in der MJL als Teil der "Zeitschrift für Kristallographie" gewertet. Dementsprechend muss das Häkchen "In MJL von ISI enthalten" gesetzt werden, obwohl es sich anhand der MJL nicht bestätigen lässt. Jan Harloff-Puhr, 4.3.2010
03.12.2009
Burkhard Peplinski
Christian Adam
Matthias Michaelis
Gerd Kley
Franziska Emmerling
Franz-Georg Simon
eng
uncontrolled
XRD
eng
uncontrolled
Phosphorus recovery
eng
uncontrolled
Sewage sludge ash
eng
uncontrolled
Urban mining
eng
uncontrolled
Fertilizers
Verlagsliteratur
Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
33435
2015
eng
S31
S35
Supplement S 1
30
article
JCPDS
Swarthmore, Pa.
1
--
--
--
Nanocrystalline and stacking-disordered beta-cristobalite AlPO4: the now deciphered main constituent of a municipal sewage sludge ash from a full-scale incineration facility
For the first time evidence is provided that a nanocrystalline and stacking-disordered, chemically stabilized β-cristobalite form of AlPO4 occurs in a sewage sludge ash (SSA). This proof is based on a combined X-ray powder diffraction and X-ray fluorescence investigation of an SSA produced at a large-scale fluidized bed incineration facility serving a catching area with a population of 2 million. The structural and chemical characterization was carried out on 'as received' SSA samples as well as on solid residues remaining after leaching this SSA in sodium hydroxide solution. Thus, it was ascertained that the observed nanocrystalline and stacking-disordered cristobalite-like component belongs to the aluminum phosphate component of this SSA, rather than to its silicon dioxide component. In addition, a direct proof is presented that the chemically stabilized β-cristobalite form of AlPO4 does crystallize from X-ray amorphous precursors under conditions that mimic the huge heating rate and short retention time (just seconds at T ≈ 850°C), typical for fluidized bed incinerators.
Powder diffraction
36529
10.1017/S0885715614001213
0885-7156
15.06.2015
Burkhard Peplinski
Christian Adam
Burkart Adamczyk
Ralf Müller
Matthias Michaelis
T. Krahl
Franziska Emmerling
eng
uncontrolled
Aluminum phosphate
eng
uncontrolled
Chemical stabilization of high-temperature forms
eng
uncontrolled
Cristobalite form
eng
uncontrolled
Stacking disorder
eng
uncontrolled
Incinerator ash
eng
uncontrolled
Sewage sludge ash
Verlagsliteratur
Datei im Netzwerk der BAM verfügbar ("Closed Access")
52088
2020
eng
12589
12601
23
12
article
Royal Society od Chemistry
1
--
--
--
Time-resolved luminescence spectroscopy for monitoring the stability and dissolution behaviour of upconverting nanocrystals with different surface coatings†
We demonstrate the potential of time-resolved luminescence spectroscopy for the straightforward assessment and in situ monitoring of the stability of upconversion nanocrystals (UCNPs). Therefore, we prepared hexagonal NaYF4:Yb3+,Er3+ UCNPs with various coatings with a focus on phosphonate ligands of different valency, using different ligand exchange procedures, and studied their dissolution behaviour in phosphate-buffered saline (PBS) dispersions at 20 °C and 37 °C with various analytical methods. The amount of the released UCNPs constituting fluoride ions was quantified by potentiometry using a Fluoride ion-sensitive electrode and particle disintegration was confirmed by transmission electron microscopy studies of the differently aged UCNPs. In parallel, the luminescence features of the UCNPs were measured with special emphasis on the lifetime of the sensitizer emission to demonstrate its suitability as Screening parameter for UCNP stability and changes in particle composition. The excellent correlation between the changes in luminescence lifetime and fluoride concentration highlights the potential of our luminescence lifetime method for UCNP stability screening and thereby indirect monitoring of the release of potentially hazardous fluoride ions during uptake and dissolution in biological systems. Additionally, the developed in situ optical method was used to distinguish the dissolution dynamics of differently sized and differently coated UCNPs.
Nanoscale
10.1039/d0nr02931a
publish
10.02.2021
false
true
Elina Andresen
Ute Resch-Genger
Matthias Michaelis
Carsten Prinz
Christian Würth
eng
uncontrolled
Fluorescence
eng
uncontrolled
Lifetime
eng
uncontrolled
Method
eng
uncontrolled
Quantification
eng
uncontrolled
Stability
eng
uncontrolled
Coating
eng
uncontrolled
Surface chemistry
eng
uncontrolled
Lanthanide
eng
uncontrolled
Fluoride
eng
uncontrolled
Electrochemistry
eng
uncontrolled
ICP-OES
eng
uncontrolled
Upconversion
eng
uncontrolled
Nano
eng
uncontrolled
Particle
eng
uncontrolled
Aging
eng
uncontrolled
Quality assurance
eng
uncontrolled
TEM
Analytische Chemie
Ingenieurwissenschaften und zugeordnete Tätigkeiten
1 Analytische Chemie; Referenzmaterialien
1.2 Biophotonik
Umwelt
Material
Verlagsliteratur
Datei im Netzwerk der BAM verfügbar ("Closed Access")
Nano
Sensorik