BAM-N001, nano silver
Often metallic nano particles reveal distinct changes of their physical and
chemical properties in comparison to the compact material. The reason can be
seen in the small size and, as a consequence, in the exceptional surface to
volume ratio. This led to a wide application of nano materials. It has been
known for a long time that small silver particles are antibacterial. Therefore
colloidal silver has been in use in medicine for a long time. Recently, the use
of colloidal silver was extended. Today there are hundreds of products
containing nano silver. The increasing use of nano silver in future will
supposedly cause an increasing release of silver into the environment. In this
way, silver can be also incorporated into the human body and accumulated in
different organs, which may be toxic or expose an unknown risk to human
health.
Therefore, it is very important to study materials, their production,
application in products and technical processes, and distribution as well as
effects to humans and to nature. To guarantee the traceability of measurements
and to secure comparability of results of different analytical methods,
certified reference materials (CRM) are essential.
CRM BAM-N001 is especially designed as a standard material for the method of Small Angle X-ray scattering (SAXS). The certification of the present nano silver reference material BAM-N001 opens also the possibility to use this material to study technical processes or biomedical processes directly in living objects.
CRM BAM-N001 is offered as an aqueous solution diluted to a
nano silver concentration of 100 µg/ml.
A package contains 2 brown plastic bottles with 2 x 5 ml suspension.
BAM-N001, report
Contact:
Dr. Michael Menzel; Division 1.3; phone: +49 30 8104-5865; fax: +49 30
8104-1137; email:michael.menzel@bam.de
2013-05-08
In the new certified reference material ERM®-EB317, an aluminium alloy type EN AW-7050 AlZn6CuMgZr mass fractions of the elements Fe, Cu, Mg, Cr, Zn, Zr, Si, Mn, Ni, Ti, Ag, Be, Bi, Ga, In, Pb, Sn, V have been certified. Certification was done in an international certification round robin in cooperation with the working group “Aluminium” of the committee of chemists of GDMB (Society for Mining, Metallurgy, Resource and Environmental Technology).
The CRM is available in form of discs (30 mm height, 50 mm diameter) for the use in spark emission and X-ray fluorescence spectrometry.
ERM®-EB317, report
Contact:
Dr. Sebastian Recknagel; Division 1.6; phone: +49 30 8104-1111; fax: +49
30 8104-1117; email: sebastian.recknagel@bam.de
2013-03-06
BAM-P106, Nanoporous titanium dioxide
Today, pore size analysis by means of gas adsorption (together with mercury porosimetry) has still remained one of the most frequently applied methods for the characterization of nanoporous materials.
Therefore, in 1996 BAM has developed the very first two porous reference materials BAM-PM-103 and BAM-PM-104 for the gas adsorption method with certified pore size and pore volume in addition to the BET surface area. In the meantime, all units of these two CRMs have been sold out. The successor material for CRM BAM-PM-103 was BAM-P105 (a nanoporous glass) certified in 2009. The high number of inquiries after a new porous CRM with similar porosity properties as those of BAM-PM-104 was the motivation for the current certification project to develop and certify an appropriate successor material intended for nitrogen adsorption.
In contrast to the predecessor material BAM-PM-104, which was an aluminium oxide (alumina), for the successor material BAM-P106 a nanoporous titanium dioxide (TiO2, also called titania) with similar porosity parameters was selected from a number of tested candidate materials.
The reference material BAM-P106 is intended for checking the performance of instruments used for the determination of BET specific surface area, specific pore volume, hydraulic pore diameter and BJH most frequent pore diameters from the desorption and the adsorption branch of the nitrogen isotherm determined by the static volumetric method.
A unit of BAM-P106 consists of a single glass bottle containing approximately 15 g of the crystalline nanoporous TiO2 reference material.
BAM-P106, report
Contact:
Annett Zimathies; Division 1.3; phone: +49 30 8104-5824; fax: +49 30
8104-1137; email: annett.zimathies@bam.de
2013-01-10
BAM-D001, (silicon carbide powder)
Measurement of particle size distribution is one of the essential examinations for powder materials which are used in ceramic or construction materials industry as well as e.g. in food engineering, pharmacy and biotechnology.
During the last decade laser diffraction method developed vigorously and became the main measuring method for particle sizing in the micrometer range. The short measuring time and the wide measuring range of advanced equipment for laser light scattering technique as well as the possibility to measure the particle size distribution in-line accelerated this development.
Since September 2012 the certified reference material "BAM-D001", a ceramic powder, is available. BAM-D001 is measured by laser light scattering using Mie calculation after dispersing it in an aqueous solution. The material is a milled silicon carbide powder showing a median particle diameter of 12.48 µm. The width of the particle size distribution is corresponding to many powders for industrial use.
The certified reference material "BAM-D001" can be used for the verification of results measured by laser diffraction method according to ISO 13320:2009.
"BAM-D001" report in German
Contact:
Petra Kuchenbecker; Division 5.5; phone: +49 30 8104-4516; fax: +49 30
8104-1547; email: petra.kuchenbecker@bam.de
2012-11-05
BAM-U114, (total cyanide in soil)
Due to their toxicity, cyanides are among the most important inorganic pollutants to be tested and monitored not only in the aquatic environment, but also in soils and soil-like materials. They can be determined as easily liberatable cyanide, as complex cyanide or as total cyanide. However, in any case it should be kept in mind that the obtained measurement results are operationally defined referring to the applied analytical method.
To make such analyses comparable, the determination of cyanides in soils has been a matter of international standardization over several years. A result of these activities is the recently published international standard ISO 11262:2011, which specifies a normative analytical method for the determination of total cyanide.
BAM-U114 is the first reference material certified on the basis of this standard. It is available as a powder with particle sizes below 125 µm and is intended for the verification of analytical results obtained when applying the standardized procedure according to ISO 11262:2011. As any reference material, it can also be used for routine performance checks (quality control charts).
BAM-U114, report
Contact:
Dr. rer. nat. Holger Scharf; Division 1.6; phone: +49 30 8104-1114; fax: +49 30
8104-1117; email: holger.scharf@bam.de
2012-05-29
ERM®-ED103, boron nitride powder
The certified reference material “ERM®-ED103” is a boron nitride powder produced
in cooperation with the working group “Special Materials” of the Committee of
Chemists of the GDMB (Society for Mining, Metallurgy, Resource and
Environmental Technology). Boron nitride (BN) ist an important advanced ceramic
material. 15 participants from 3 countries were involved in an international
round robin test. Certified were the mass fractions of main and minor
components such as Al, Ca, Co, Cr, Fe, Mg, Na, Si, Ti, C, O, N,
B(total) and B2O3. The results and details of
the calculation of the uncertainty budget are described in the certificate and
the certification report. The reference material was developed for the use in
the calibration of analytical instruments and to validate or verify analytical
methods intended to be used for the determination of impurities and main
components in boron nitride materials.
ERM®-ED103, report
Contact:
Dr. rer. nat. Sebastian Recknagel; phone: +49 30 8104-1111; fax: +49 30
8104-1117; email: sebastian.recknagel@bam.de
2012-05-29
CRM Steel-H1
In the new certified reference material CRM Steel-H1 was certified in an international certification interlaboratory comparison with participating laboratories from the European steel industry. It was prepared and issued by the German Iron and Steel CRM Working Group, comprising BAM Federal Institute for Materials Research and Testing, Max-Planck-Institut für Eisenforschung GmbH (MPI) and Steel institute VDEh. Certified is the mass fraction of hydrogen, 0,97 mg/kg. Characterisation was performed using the analytical methods fusion/thermal conductivity, heat extraction/thermal conductivity and fusion/infrared absorption
The material is available in form of pins with a mass of 1 g and a diameter of 6 mm each, packed in bottles with 100 pins.
Contact:
Dr. rer. nat. Sebastian Recknagel; phone: +49 30 8104-1111; fax: +49 30
8104-1117; email: sebastian.recknagel@bam.de
2012-04-13
contaminated river sediment
Contaminated river sediment ERM®-CC020
Starting material for the preparation of the new certified reference material ERM®-CC020 was a mixture of river sediments collected at different locations in the eastern part of Germany.
The material was certified according to the principles laid down in ISO Guide 35:2006 and in the technical guidelines of the European Reference Materials® co-operation agreement between BAM, IRMM, and LGC.
Certified values are given for aqua regia extractable (ISO 11466) mass fractions of As, Cd, Co, Cr, Cu, Hg, Ni, Pb, V and Zn. ERM®-CC020 is available as a powder with particle sizes below 63 µm. It is intended for the verification of analytical results obtained by standardised procedures as well as for the validation of modified or new analytical procedures.
ERM®-CC020, report
Contact:
Dr. rer. nat. Holger Scharf; phone: +49 30 8104-1114; fax: +49 30 8104-1117;
email: holger.scharf@bam.de
2012-02-06
New certified reference materials ERM®-EB104, ERM®-EB105 and ERM®-EB106
In the new certified reference materials ERM®-EB104,
ERM®-EB105 and ERM®-EB106 PbCaSn mass fractions of the
elements Ca, Sn (ERM®-EB104, -106) respectively Ca, Sn, Ag, Bi,
(ERM®-EB105) have been certified. Certification was done in an
international certification round robin in cooperation with the working group
“Lead” of the committee of chemists of GDMB (Gesellschaft für Bergbau,
Metallurgie, Rohstoff- und Umwelttechnik). The CRMs contain Ca and Sn
graduated, so that they are well suitable for calibration purposes.
| Ca mass fraction in % | Sn mass fraction in % | |
|---|---|---|
| ERM®-EB104 | 0.0530 | 1.27 |
| ERM®-EB105 | 0.0595 | 1.43 |
| ERM®-EB106 | 0.0728 | 1.72 |
The materials are available in form of discs (40 mm height, 40 mm diameter) for the use in spark emission and X-ray fluorescence spectrometry.
ERM®-EB104-106 report
Contact:
Dr. rer. nat. Sebastian Recknagel, phone: +49 30 8104-1111; fax: +49 30
8104-1117; email: sebastian.recknagel@bam.de
2011-12-15
Ochratoxin A (OTA) in ground roasted coffee
Ochratoxin A (OTA) in ground roasted coffee ERM®-BD475
The reliable surveillance of current maximum levels for mycotoxins is an
essential part of food safety and consumer protection. According to the
European regulation No. 123/2005 maximum levels for different foods exist for
the hepato- and nephrotoxic mycotoxin ochratoxin A (OTA), e.g. OTA in roasted
coffee (5 µg/kg).
The goal of the certification of ERM®-BD475 was the development of a reference
material with an OTA-content close to the regulatory limit which had not been
available prior to this.
ERM®-BD475 is a ground roasted coffee (<
0.5 mm) spiked with OTA prior to homogenization. The material was certified
according to the principles laid down in ISO Guide 35:2006 and in the technical
guidelines of the European Reference Materials® co-operation
agreement between BAM, IRMM, and LGC. The HPLC-MS/MS method with
13C20-OTA as internal standard was used for the in-house
certification at BAM. In a supporting interlaboratory comparison study
particularly immunoaffinity chromatography and HPLC with fluorescence detection
were applied.
ERM®-BD475, report
Contact:
Dr. rer. nat. Mathias Koch, phone: +49 30 8104-1123; fax: +49 30 8104-1127;
email: matthias.koch@bam.de
2011-06-21
Ochratoxin A (OTA) in red wine
Ochratoxin A (OTA) in red wine ERM®-BD476
The reliable surveillance of current maximum levels for mycotoxins is an
essential part of food safety and consumer protection. According to the
European regulation No. 123/2005 maximum levels for different foods exist for
the hepato- and nephrotoxic mycotoxin ochratoxin A (OTA), e.g. OTA in wine (2
µg/kg).
The goal of the certification of ERM®-BD476 was the development of a reference
material with an OTA-concentration close to the regulatory limit which had not
been available prior to this.
Starting material for ERM®-BD476 is a naturally contaminated red wine
from a retail market in Berlin. The material was certified according to the
principles laid down in ISO Guide 35:2006 and in the technical guidelines of
the European Reference Materials® co-operation agreement between
BAM, IRMM, and LGC. The HPLC-MS/MS method with 13C20-OTA
as internal standard was used for the in-house certification at BAM. In a
supporting interlaboratory comparison study particularly immunoaffinity
chromatography and HPLC with fluorescence detection were applied.
ERM®-BD476, report
Contact:
Dr. rer. nat. Mathias Koch, phone: +49 30 8104-1123; fax: +49 30 8104-1127;
email: matthias.koch@bam.de
2011-06-21
Fusarium mycotoxins in wheat flour
Fusarium mycotoxins in wheat flour ERM®-BC600
The reliable surveillance of current maximum levels for mycotoxins is an
essential part of food safety and consumer protection. Under moderate climate
conditions the predominating genera of fusarium moulds is able to produce a
broad range of toxins on cereals and cereal based products. Zearalenone (ZON)
and deoxynivalenol (DON) belong to the most relevant fusarium toxins. Whereas
ZON is known for its estrogenic properties DON can cause gastrointestinal and
immunosuppressive effects in particular. European maximum levels for ZON and
DON are in force for unprocessed cereals, bread and infant food.
The goal of the certification of ERM®-BC600 was the development of a reference
material with relevant ZON- and DON-contents which had not been available prior
to this. The starting material for ERM®-BC600 is wheat infected by fusarium
culmorum. The certification of the dried, milled (< 1 mm) and homogenized
material was done according to the principles laid down in ISO Guide 35:2006
and in the technical guidelines of the European Reference Materials®
co-operation agreement between BAM, IRMM, and LGC by participation of selected
expert laboratories in an interlaboratory comparison study for
certification.
ERM®-BC600, report
Contact:
Dr. rer. nat. Mathias Koch, phone: +49 30 8104-1123; fax: +49 30 8104-1127;
email: matthias.koch@bam.de
2011-06-21
Electronic scrap
Electronic scrap melted with pyrite ERM®-EZ505
Printed circuit boards are a source for precious metals of economic
interest. The price for used printed circuit boards depends on the
precious metals content and on the current price for metals like silver, gold,
platinum and palladium. Resulting from the high price for precious
metals, accurate determination of these elements is necessary. To ensure
this, certified reference materials for calibration or quality control are
required. The new reference material ERM®-EZ505 closes a gap in the field of
electronic scrap analysis.
Used mixed and printed circuit boards were taken as initial material. These
boards were doped with Be, In and Pt, ashed and melted with approx. the same
amount of pyrite (FeS2). After milling and grinding the material was
sieved to a particle size below 150 µm and homogenised thoroughly. Mass
fractions of Cu, Ni, Ag, Au, Pt, Pd, Be and In were certified. ERM®-EZ505 is available in 200 ml amber glass
containers each filled with 200 g of material.
ERM®-EZ505, report
Contact:
Dr. rer. nat. Sebastian Recknagel, phone: +49 30 8104-1111; fax: +49 30
8104-1117; email: sebastian.recknagel@bam.de
2011-02-18
Contaminated sandy soil
Contaminated sandy soil ERM®-CC018
Starting material for the preparation of the new certified reference material ERM®-CC018 was a sandy soil collected from a stockpile excavated during a remediation campaign on an industrial wasteland in the Berlin region (Germany).
The material was certified on the basis of analytical results obtained in several BAM working groups according to the principles laid down in ISO Guide 35:2006 and in the technical guidelines of the European Reference Materials® co-operation agreement between BAM, IRMM, and LGC.
Certified values are given for aqua regia extractable (ISO 11466) mass fractions of As, Cd, Co, Cr, Cu, Hg, Ni, Pb, V and Zn. The CRM is available as a powder with particle sizes below 63 µm and is intended for the verification of analytical results obtained by standardised procedures as well as for the validation of modified or new analytical procedures.
ERM®-CC018, report
Contact:
Dr. rer. nat. Holger Scharf; phone: +49 30 8104-1114; fax: +49 30 8104-1117;
email: holger.scharf@bam.de
2010-12-13
Boron isotope reference materials
First reference materials worldwide certified for δ11B
Isotope reference materials are essential to enable the determination of reliable and comparable isotope data. Besides the correction of mass fractionation or mass discrimination isotope reference materials are indispensible for validation and quality control of analytical procedures. The BAM Federal Institute for Materials Research and Testing has produced and certified the first reference materials worldwide being certified for δ11B. In general δ-values of specific elements express the difference of an isotope ratio of a sample relative to an international accepted standard in per mill. Such δ-values are used in science and technology to study geochemical and environmental processes and to determine the provenance of food and the origin of forensic and archaeological artefacts.
The three brand-new boron isotope reference materials are certified for their δ11B-values relative to NIST SRM 951 which is the internationally accepted origin of the δ-scale for boron. The certified δ11B values are -20.2 (6) ‰ for ERM®-AE120, 19.9 (6) ‰ for ERM®-AE121 and 39.7 (6) ‰ for ERM®-AE122 and cover about three-quarters of the known natural boron isotope variability. The δ11B reference materials are primarily intended to be used for quality control and the validation of chemical and mass spectrometric procedures.
Additionally, two isotope reference materials, ERM®-AE102a and ERM®-AE104a, have been certified. ERM®-AE102a and ERM®-AE104a are replacing the nearly exhausted boron isotope reference materials ERM®-AE102 and ERM®-AE104 with certified isotope abundance ratios 11B/10B are 2.3338 (30) for ERM®-AE102a and 2.1758 (28) for ERM®-AE104a.
Together with the formerly certified ERM®-AE101 and -AE103 a unique set of four isotope reference materials and three δ-reference materials for boron isotope analysis is now available from BAM.
Contact:
Dr. rer. nat. Jochen Vogl; phone +49 30 8104-1144; fax: +49 30
8104-3527; email: jochen.vogl@bam.de
2010-11-30