Precise determination of strontium isotope ratios by TIMS to authenticate tomato geographical origin

Trincherini, P. R.; Baffi, Claudio; Barbero, Pietro; Pizzoglio, Enrico; Spalla, Stefano

doi:10.1016/j.foodchem.2013.08.030

Cited by 47 publications

(23 citation statements)

References 23 publications

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“…In other words, the efficiency of Rb-Sr separation must be at least 99.85 %. This, in the separation techniques available, is a very high value of efficiency and not easy to attain also because in the starting sample the Rb/Sr ratio can vary up to a value of 10:1 [19,20]. Moreover, the Rb has a very high efficiency of ionization, so even very small quantities of it easily yield a signal which affects, the 87 mass of strontium, by an isobaric point of view.…”

Section: Strontium Mass Spectrometrymentioning

confidence: 99%

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Food traceability using the 87Sr/86Sr isotopic ratio mass spectrometry

Baffi

Trincherini²

2016

Eur Food Res Technol

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and ends with man. The environment-food interaction is clear, and the production of safe and quality food is an indispensable condition for human health. The globalization of the markets, in particular of food markets, means that a greater variety of food is proposed to consumers who want to know more about its geographical origin and characteristics. For this aim, food traceability is a tool of primary importance because it acts on both food safety and quality, in order to satisfy the needs of a demanding consumer, who is interested in the quality of the food he eats and in the controls about the veracity of the brands which protect it [1, 2]. The production of high-quality food is the first step to satisfying other important aspects, such as the development of a productive but sustainable agriculture and the control of marketing. Frequently, all this is delegated to the "labelling", which is incomplete by nature or easily manipulated. Only the use of a scientific method of identification and control of the geographical origin, independent of the "labelling" and therefore of the producer, enables us to answer in full important questions concerning food safety, food quality and consumer protection. In order to achieve good results in this field, a basic mandatory condition is to develop suitable "robust" analytical methods which can support modern legislative tools, aimed at guaranteeing food authenticity and origin and trying to avoid possible frauds; the latter are fuelled by the modern ease of transport and conservation of products in world markets. Numerous chemical, biological and genetic methods have been developed over time in order to verify the origin of foods [3]. In this paper, we will focus on mass spectrometry, in particular on the 87 Sr/ 86 Sr isotopic ratio measurement, in that it is a "robust" analytical technique, able to fulfil the requisites needed for traceability, both to satisfy the veracity of the geographical origin and to trace possible contaminated foods back to their origin. In particular, due Abstract Today, food traceability needs to develop suitable "robust" analytical methods, in terms of the precision and of the reliability of results, which can support modern legislative tools, aimed at guaranteeing food authenticity and origin and trying to avoid possible frauds. This review paper highlights the most recent results obtained with the use of the 87 Sr/ 86 Sr isotopic ratio technique, when applied to the traceability of the origin of different foods for human consumption, such as vegetables, beverages, dairy products, and meat and fish products. The instrumental techniques, with the relative methodologies and the quality of the final results, will be examined and commented.

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Section: Strontium Mass Spectrometrymentioning

confidence: 99%

“…The most recent application for vegetables concerns tomato [19]. The application to tomato (Lycopersicum esculentum L.) seemed particularly significant in that Italy is one of the world leaders for tomato cultivation and processing.…”

Section: Tomatomentioning

confidence: 99%

Food traceability using the 87Sr/86Sr isotopic ratio mass spectrometry

Baffi

Trincherini²

2016

Eur Food Res Technol

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“…Here we test a newly developed solution method for strontium (Sr) isotope analysis using inductively coupled plasma tandem mass spectrometry (ICP‐MS/MS), after the work of Bolea‐Fernandez et al for its suitability in assessing the provenance of very small quantities of biological material of biosecurity relevance. Based on the high spatial variation of 87 Sr/ 86 Sr in the geosphere and the fact that Sr is expected to be present in relatively high concentration in many biological tissues, Sr isotopes are recognised as powerful tracers of provenance . The geographic variability of bioavailable Sr isotope ratios is related to a combination of their inherent variation in different bedrock geologies and the Sr being from a variety of environmental and anthropogenic sources .…”

Section: Introductionmentioning

confidence: 99%

“…Based on that Sr is expected to be present in relatively high concentration in many biological tissues, 2,3 Sr isotopes are recognised as powerful tracers of provenance. [4][5][6][7] The geographic variability of bioavailable Sr isotope ratios is related to a combination of their inherent variation in different bedrock geologies and the Sr being from a variety of environmental and anthropogenic sources. [8][9][10][11] Importantly, there is no evidence for fractionation of Sr isotopes during biological processes.…”

Section: Introductionmentioning

confidence: 99%

Analysing Sr isotopes in low‐Sr samples such as single insects with inductively coupled plasma tandem mass spectrometry using N₂O as a reaction gas for in‐line Rb separation

Murphy

Allen

Ghidan

et al. 2020

Rapid Comm Mass Spectrometry

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Rationale Strontium isotopes are valuable markers of provenance in a range of disciplines. Limited amounts of Sr in low‐mass samples such as insects mean that conventional Sr isotope analysis precludes their use for geographic origins in many ecological studies or in applications such as biosecurity. Here we test the viability of using inductively coupled plasma tandem mass spectrometry (ICP‐MS/MS) with N2O as a reaction gas for accurately determining Sr isotopes in insects with Sr < 100 ng. Methods Strontium isotopes were determined in solution mode using ICP‐MS/MS with 0.14 L/min N2O as a reaction gas to convert Sr+ into SrO+ for in‐line separation of 87Sr from 87Rb. The Sr isotope reference standards NIST SRM 987, NIST SRM 1570a and NIST SRM 1547 were used to assess accuracy and reproducibility. Ten insect species collected from the wild as a proof‐of‐principle application were analysed for Sr concentration and Sr isotopes. Results Using ICP‐MS/MS we show for the first time that internal mass bias correction of 87Sr16O/86Sr16O based on 88Sr16O/86Sr16O works to give for NIST SRM 987 a 87Sr/86Sr ratio of 0.7101 ± 0.012 (RSD = 0.17%) and for NIST SRM 1570a a 87Sr/86Sr ratio of 0.7100 ± 0.009 (RSD = 0.12%), which are within error of the accepted values. The first 87Sr/86Sr ratio of NIST SRM 1547 is 0.7596 ± 0.0014. Strontium analyses were run on 0.8 mL of 0.25–0.5 ppb Sr, which equates to 2–4 ng of Sr. Strontium isotope analysis with a precision of >99.8% can be achieved with in‐line separation of 87Sr from 87Rb at least up to solutions with 25 ppb Rb. Conclusions A minimum of 5 mg of insect tissue is required for Sr isotope analysis. This new ICP‐MS/MS method enables Sr isotope analysis in single insects, allowing population‐scale studies to be feasible and making possible applications with time‐critical uses such as biosecurity.

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“…Trace and rare earth element fingerprinting, especially in combination with stable and/or radiogenic isotope signatures, has been widely used for identification of provenance of regional food products. This use of a trace element fingerprint, combined with statistical techniques such as multivariate data analysis, was successfully applied for the classification of products such as dairy products, beverages, wine, meat, vegetable oils, honey, fruit and vegetables, peas, grain, etc., according to their origin . This holds especially true for those products that have a direct relationship with the autochthonous soil, and have undergone no or little further processing.…”

Section: Introductionmentioning

confidence: 99%

A tool to assure the geographical origin of local food products (glasshouse tomatoes) using labeling with rare earth elements

et al. 2018

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BACKGROUNDTrace element fingerprinting has been widely used for identification of provenance of regional food. In the case of products from conventional agriculture, it is expected that the elemental composition will comply with that of the commercially available substrate of the plants. Therefore, for products without a direct relationship with the regional soil the region‐specific differences in elemental composition are no longer recognizable. The idea of this work is the labeling of tomatoes with rare earth elements (REE) in the ultra‐trace range for food authentication.RESULTSLabeling of tomatoes was carried out either by watering the soil with Nd‐ and Er‐spiked water or by adding these elements as solid oxides to the soil. In both cases enrichment of Nd and Er relative to the control group was detected in tomato fruits and leaves using inductively coupled plasma–mass spectrometry. Tomato plants rapidly absorb the dissolved REE from the irrigation water, and watering for a short period just before ripeness is sufficient to induce REE labels.CONCLUSIONLabeling with trace amounts of REE could potentially be used to assure the provenance of tomatoes of local origin and separate these from products of foreign origin. © 2018 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Precise determination of strontium isotope ratios by TIMS to authenticate tomato geographical origin

Cited by 47 publications

References 23 publications

Food traceability using the 87Sr/86Sr isotopic ratio mass spectrometry

Food traceability using the 87Sr/86Sr isotopic ratio mass spectrometry

Analysing Sr isotopes in low‐Sr samples such as single insects with inductively coupled plasma tandem mass spectrometry using N₂O as a reaction gas for in‐line Rb separation

A tool to assure the geographical origin of local food products (glasshouse tomatoes) using labeling with rare earth elements

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Precise determination of strontium isotope ratios by TIMS to authenticate tomato geographical origin

Cited by 47 publications

References 23 publications

Food traceability using the 87Sr/86Sr isotopic ratio mass spectrometry

Food traceability using the 87Sr/86Sr isotopic ratio mass spectrometry

Analysing Sr isotopes in low‐Sr samples such as single insects with inductively coupled plasma tandem mass spectrometry using N2O as a reaction gas for in‐line Rb separation

A tool to assure the geographical origin of local food products (glasshouse tomatoes) using labeling with rare earth elements

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Product

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Analysing Sr isotopes in low‐Sr samples such as single insects with inductively coupled plasma tandem mass spectrometry using N₂O as a reaction gas for in‐line Rb separation