IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Trace-level analysis of phosphonate in wine and must by ion chromatography with inductively coupled plasma mass spectrometry (IC-ICP-MS).

Trace-level analysis of phosphonate in wine and must by ion chromatography with inductively coupled plasma mass spectrometry (IC-ICP-MS).

Abstract

Phosphonic acid and especially potassium dihydrogen phosphonate are widely used to restrain the ubiquitous pressure of grapevine downy mildew in viticulture. Nevertheless, phosphonic acid and its derivatives have been banned in organic viticulture in October 2013, because they have been classified as plant protection products since then. This development has fueled the need for analytical methods for sensitive phosphonate determination. Current routine analysis of phosphonic acid is usually performed by ion chromatography with conductivity detection (IC-CD), which is not always sufficiently sensitive and specific. Furthermore, the quick polar pesticide evaluation method (QuPPe) of the European Reference Laboratory in combination with LC-MS/MS is well established for most polar pesticides. However, in case of phosphonic acid, issues regarding mass transitions and poor chromatographic resolution, can occur. Therefore, we sought to evaluate a new method based on IC separation coupled with ICP-MS detection as an alternative for previously described methods. By coupling an ICP-MS to an IC, non-phosphorus-containing, coeluting substances can be eliminated and thus a higher specificity can be achieved. Hence, this contribution highlights the development and validation of an IC-ICP-MS based workflow for the robust, sensitive and reliable determination of phosphonic acid at low µg/kg levels in wine and must. This method is then compared to the previous detection by CD and the advantages and disadvantages of each are briefly described. Quantification limits are 20 µg/kg or lower with % RSDs typically

DOI:

Publication date: June 23, 2022

Issue: IVAS 2022

Type: Poster

Authors

Otto Sören1, May Bianca2 and Schweiggert Ralf1

1Department of Beverage Research, Chair Analysis and Technology of Plant-based Foods, Geisenheim University
2Department of Enology, Chair Wine and Beverage Chemistry, Geisenheim University

Contact the author

Keywords

polar pesticides, IC-ICP-MS, IC-CD, phosphonic acid, organic viticulture

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

Characterization of “territoires” throughout the production of wines obtained with withered grapes: the cases of “Terra della Valpolicella” (Verona) and “Terra della Valle del Piave” (Treviso) in Northern Italy

Dans la définition et la description d’un “territoire” (“terra” en italien), avec les facteurs du milieu et génétiques, un rôle important est joué par ceux agronomiques, techniques et de culture qui contribuent à caractériser le produit d’une zone spécifique.

Read More

El medio natural de Chile como factor de adaptación de la vid

Chile, junto con Australia, EE.UU., Sudáfrica, Argentina y Nueva Zelanda constituye el grupo de países del nuevo mundo vitivinícola. Todos ellos en conjunto han experimentado en la última década

Read More

Disentangling the sources of variation in stomatal regulation in field-grown cultivar-rootstock combinations

The inherent variability of Nature poses challenges for researchers to draw clear conclusions from field experiments. Identifying and assessing adaptations to climate change requires agronomic field trials.

Read More

Evaluation of the efficiency of dialysis membranes in the wine dealcoholization process

The global wine production is continuously evolving to meet the new demands and preferences of consumers. in this evolving scenario, it’s important to determine which trends will be short-lived and which will remain over time. The promotion of healthier habits has encouraged consumers to try to find alternatives with low or no alcohol content. The challenge for the industry is to produce an alcohol-free wine that retains the familiar aromas and mouthfeel of traditional wine but without alcohol. Ethanol is the most abundant compound in wine, excluding water.

Read More

Veraison as determinant for wine quality and its potential for climate adapted breeding

The evaluation of new grapevine genotypes regarding their potential to produce high quality wines is the time limiting factor in the process of grapevine breeding. Hence, the development of quality-related markers useable in marker-assisted selection (MAS) as well as in prediction models for this bottleneck trait will tremendously enhance breeding efficiency. In extensive studies a training set of a segregating white wine F1 population (150 F1 genotypes = POP150; `Calardis Musqué´ x `Villard Blanc´) was deeply phenotyped and genotyped for model development and QTL analysis.

Read More