Nineta Hrastelj

Nineta Hrastelj
European Chemical Society (EuChemS)

PhD

About

44
Publications
5,434
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298
Citations
Citations since 2016
8 Research Items
123 Citations
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2016201720182019202020212022051015202530
2016201720182019202020212022051015202530
2016201720182019202020212022051015202530
Additional affiliations
August 2011 - present
European Chemical Society (EuChemS)
Position
  • Secretary-General

Publications

Publications (44)
Chapter
The chapter »Metrology for the Sea: Chemical Quantities gives an overview of the foundation for measurements in the chemical sciences and in particular those related to the sea. In this context, traceability, validation, and measurement uncertainty are explained, in addition to sampling and quality aspects. An overview of interconnected worlds of t...
Chapter
This procedure describes titrimetric determination of mass fraction of titanium dioxide (TiO2) and total iron content (Fe-tot) in Ilmenite and Titanium Slag.
Book
This book presents worked examples of five analytical procedures. These practical examples address traceability, validation and measurement uncertainty aspects in a systematic and consistent way, and cover applications in the analysis of water, food, as well as ores and minerals. This concept is based on the experiences of the TrainMiCc program, in...
Article
Full-text available
Employment conditions and career opportunities are in the focus of the new Employment Survey for European Chemists (ESEC2). Conditions and opportunities are individually analysed for all countries with a statistically significant number of responses. The results provide important clues for careers in these countries and in Europe as a whole. The im...
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Technical Report
Full-text available
Final Evaluation of the European Metrology Research Programme (EMRP) and Interim Evaluation of the European Metrology Programme for Innovation and Research (EMPIR)
Article
This paper describes a summer school organized in the context of an International Master Program, which was created to address a qualification framework required by many employers for having graduates with knowledge and competences required to work in an accredited laboratory. The development of this program started in 2005 when the European Commis...
Article
Full-text available
Which country pays its chemists and chemical engineers the highest salaries? Where can I find a new job quickest? Which chemical sub-discipline offers most jobs? Reliable answers for these and other questions have been derived from the first European employment survey for chemists and chemical engineers, which was carried out in 2013. Here we publi...
Article
Full-text available
Experts examine the role of analytical chemists in the European labor force. They examine whether higher education in chemistry in Europe provide appropriate specialization for graduates. Reliable answers to these and other questions have been derived from the first European employment survey of chemists and chemical engineers, conducted in 2013. T...
Article
The robustness assessment is a part of a method validation protocol, during which several characteristics of an analytical method are also evaluated (e.g. accuracy, repeatability, reproducibility, linearity, intermediate precision, measurement uncertainty) in order to assess its fitness for purpose. The purpose of robustness assessment of the near...
Article
A summary of the working group (WG) discussions on proficiency testing (PT) and external quality assessment (EQA) held at the Eurachem Workshop, Rome, 5–7 October 2008 is provided. The eight WG’s covered a range of issues concerned with current practice and future directions; how frequently should laboratories participate in PT/EQA? (WG1); developm...
Book
Full-text available
This book includes four TrainMiC® presentations: 1. Uncertainty of measurement — Part I Principles; 2. Uncertainty of measurement — Part II Approaches to evaluation; 3. Statistics for analytical chemistry — Part I; and 4. Statistics for analytical chemistry — Part II. TrainMiC® is a European programme for lifelong learning on how to interpret the...
Book
Full-text available
Examples on traceability, measurement uncertainty and validation for measurements of retinol and α-tocopherol in human serum, cyclamate in soft drinks, arsenic in groundwater, sodium chloride in milk products and total organic carbon in waste water are presented in this book. Additionally, the idea and structure of the TrainMiC® examples, which com...
Article
The TrainMiC® (Training in Metrology in Chemistry) programme is a European programme for Life-Long Learning in metrology in chemistry, which is a truly unique system operational across many parts of Europe (19 countries) via national teams. It uses shareware pedagogic tools and the learning content has been harmonised at the European level by a joi...
Article
The article describes the importance of calibration of all the instruments that are used in a certain measurement procedure as well as different ways of their calibration. As to bring the topic closer to the users of measurements, analogy with an orchestra is used.
Article
Full-text available
The objective of this paper is to provide an economic perspective to those involved in public financing of the national metrology infrastructure. Whereas justifications for subsidising the national metrological activities are often historically biased, we raise the importance of economic considerations, which could be used during prioritisation. Th...
Article
The main aim of the TrainMiC® Convention was to gather TrainMiC® authorized trainers from all 19 countries involved in this programme. About 90% of all authorized TrainMiC® trainers assembled at this Convention, which shows the interest in and usefulness of the TrainMiC® system. The role and position of the authorized trainers was formally recogniz...
Article
This article gives an overview of the programme TrainMiC®, a European programme for Life-Long Learning in metrology in chemistry. It explains its raison d’être and puts it into perspective to other European and EU member states initiatives. The TrainMiC® system (http://www.trainmic.org) is described in detail. It is explained how it has developed i...
Article
This paper reports how measurement traceability of results of field laboratories in the area of wastewater analysis can be demonstrated by participation in a proficiency testing scheme based on reference values. A description of the scheme, organized by the National Institute of Chemistry, Ljubljana, Slovenia, is given: preparation of test material...
Article
A report on the 1st AcadeMiC Summer School 'Metrology in Chemistry', held in Rogaška Slatina, Slovenia, from July 6 to 9, 2005, is presented. The most important outcome of the meeting was the consensus that there is an urgent need to implement topics on metrology in the curricula of European universities and a common strategy is needed. It was sugg...
Article
This paper describes a demonstrator case study of how a distributed metrology institute can bring value to the measurement infrastructure. The example is taken from the food measurement area, where the Metrology Institute of the Republic of Slovenia (MIRS) has set up a collaboration with the Slovenian National Food Reference Laboratory (NFRL) to ac...
Article
A sound strategy for a national metrology institute (NMI) is proposed, describing how to set up an metrology infrastructure for chemical measurements. A national measurement infrastructure is defined as a collection of various measurement services (testing, calibration and reference laboratories) and the communication between these services. For cl...
Article
Target measurement uncertainties (TMUs), which should be achieved in chemical measurements, are proposed. Such TMUs are intended to set goals for measurement laboratories and could provide independent and objective criteria for laboratory assessors verifying the measurement capability of laboratories. A TMU is specified relative to a stated metrolo...
Article
 The fact that various definitions and terminology applied to measurements in analytical chemistry are not always consistent and straightforward, by not only answering the question ”what”, but also ”how”, leads to their various interpretations. This results in non-uniform implementation of very basic and essential metrological principles in chemist...
Article
In order to evaluate the influence of the choice of the data for the training set on the prediction ability of linear and nonlinear models, various methods for sample selection were tested. The study is carried on for modelling of five colour properties: whiteness (W10), lightness (L* and Lp*), and hue (b* and bp*) of a titanium dioxide white pigme...
Article
One of the initiatives of the Institute for Reference Materials and Measurements of the Joint Research Center of the European Commission in the framework of the support programme for candidate countries is to establish training in metrology in chemistry (TrainMiC). The aim as well as the content of this education programme is presented in this pape...
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Full-text available
A common understanding of issues related to measurement science applied to chemistry is essential among European member states and acceding- candidate countries. An education platform was therefore created to respond to this challenge: TrainMiC, Training in Metrology in Chemistry. After a brief presentation of TrainMiC and an overview of TrainMiC e...
Technical Report
Full-text available
Enotno razumevanje pojmov s področja analizne kemije je ključnega pomena tako za članice Evropske unije kakor tudi za države kandidatke. Zato je bil osnovan program, ki odgovarja na vprašanja s področja merjenj v kemiji: TrainMiC, Training in Metrology in Chemistry (Izobraževanje o meroslovju v kemiji). V tem priročniku je na kratko podan pregled v...
Article
In 2000, the European Commission-Joint Research Centre, Institute for Reference Materials and Measurements (EC-JRC-IRMM) set up a project to improve the scientific basis for metrology in chemistry (MiC) in EU candidate countries. Several activities were initiated (training, fellowships, sponsoring seminars, conferences and participation in the Inte...
Article
Full-text available
Spectroscopic methods are widely used in analytical laboratories all over the world. Detailed knowledge about the principles of the techniques as well as knowledge of the whole analytical process are necessary to 'produce' measurement results of adequately high quality. According to the conclusions resulting from IRMM's International Measurement Pr...
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Full-text available
Traceability of the results of measurements of gold in precious metal alloys by XRF is described and the role of certified reference materials (CRMs) and reference materials (RM) explained. During the measurement process, CRMs and RMs are used twice: in the calibration of the measuring instrument (XRF spectrometer) and just before measuring each in...
Article
In order to establish an adequate analytical system for the quality control of industrially produced titanium dioxide white pigments, two multivariate linear calibration techniques, principal component regression (PCR) and partial least squares (PLS), are used to model the relationship between the important pigment property, change of colour, and i...
Article
Two different artificial neural network (ANN) strategies for building a model for the quantitative prediction of the property called ''total color difference'' are described. The models in the study are based on eight different complex oxide concentration measurements. The models obtained by the ANNs are compared with the multivariate linear regres...
Article
Full-text available
An approach to set up an appropriate and optimal national infrastructure for measurements related to quality of life in Slovenia is described. It is based on an analysis of the needs of the global society, of the national needs and priorities and on the national capabilities. The implementation of the conclusions into practice has started. As in ge...

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Projects

Projects (2)
Project
To advance science of measurements in chemistry and related scientific fields as well as to advice on an appropriate infrastructure.