Assessment of homogeneity and stability of new reference material of passion-flower fruits for proficiency testing: Pesticide residues in purple passion fruit (Passiflora pinnatistipula)

Paredes, Maira A.; González-Mónico, Sergio A.; Dallos, Jairo Arturo Guerrero

doi:10.1007/s00769-021-01489-1

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…For the between-bottle homogeneity test,11 units of the CRM candidates were randomly chosen. They were numbered from 1 to 11 and three subsamples were weighed from each bottle and measured by LC-IDMS/MS [36]. The isotope dilution liquid chromatography mass spectrometry method established in our laboratory was used for the determination, and the measured data were subjected to analysis of variance (ANOVA) to determine whether there were systematic differences between the measured values of AFM1 content in dairy powder in different units by comparing the variance between groups and the variance within groups.…”

Section: Homogeneity and Stability Assessment 261 Homogeneity Assessmentmentioning

confidence: 99%

Certification of a novel matrix reference material for accurate measurements of aflatoxin M1 in milk powder

Huang,

Liu,

Zhou

et al. 2024

Accred Qual Assur

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In this study, two different concentrations of matrix certified reference materials (CRMs) were produced for the accurate measurement of aflatoxin M1(AFM1) in milk powder((GBW(E) 100552, GBW(E) 100553)). The raw material was obtained by feeding cows with positive drugs. The homogeneity, stability and characterization of this matrix CRMs were examined by liquid chromatography tandem mass spectrometry with isotope-labeled internal standard method. The certified value for the low concentration of AFM1 in milk powder was 2.45 µg/kg with an uncertainty of 0.43 µg/kg (coverage factor k=2, at 95% confidence). The certified value for the high concentration of AFM1 in milk powder was 3.45 µg/kg with an expanded uncertainty of 0.49 µg/kg (coverage factor k=2, at 95% confidence). In addition, the samples were evaluated in detail for homogeneity, long-term stability at -80°C for 6 months, and short-term stability at 4°C for 7 days. The results showed that the samples were stable under the above conditions.

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Section: Homogeneity and Stability Assessment 261 Homogeneity Assessmentmentioning

confidence: 99%

Certification of a novel matrix reference material for accurate measurements of aflatoxin M1 in milk powder

Huang,

Liu,

Zhou

et al. 2024

Accred Qual Assur

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“…Previously, some publications have researched on production of CRM or RM for pesticides in food matrix such as carrot/potato matrix [15], apple [16], cabbage [17], tea [13], olive oil [18], passion-ower fruits [19], grapes [20], cucumber [21], tomato [22,23]. Storage condition especially temperature is highly affect shelf life the RM.…”

Section: Introductionmentioning

confidence: 99%

“…Most vegetables and fruits matrix RM are stored at − 20°C or lower, but olive oil can be stored at 4°C or higher temperature. The RM of pesticides in food are various include frozen [13,15,16,19,23], freeze dry after spiking pesticide [15,17,21], freeze dry before spiking pesticides [21]. These studies mainly focused on production and shelf life of RM or pro ciency testing items, while stability of RM in utilization such as transportation and after open the RM bottle has not been pay attention.…”

Section: Introductionmentioning

confidence: 99%

Study on production and utilization of a reference material for determination of multi-residue pesticides in tomato matrix

Tran,

Nguyen,

Dinh

et al. 2024

Preprint

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Controlling pesticide residues in food has been always a concern globally. It is recommended to use certified reference materials (CRM) or reference materials (RM) in pesticide analysis to validate analytical methods and assess the quality of the measurement results. A comprehensive study on production, storage, transportation, and utilization of an RM of pesticide residues (Difenoconazole, Imidacloprid, Acetamiprid, Indoxacarb, Profenofos, Buprofezin) in tomato was conducted. After comparing two production processes of freezing and freeze-drying, the freeze-drying production process was concluded to be superior. The RM production and characterization process is in accordance with ISO 17034:2016 and ISO guide 35:2017-08. The concentrations of 6 pesticides in the RM are around their Codex maximum residue limits. At a storage temperature of 4°C, freeze-dried RM are predicted to be stable for all six pesticides for at least 548 days, while at a temperature of − 20°C, the shelf life was at least 696 days.

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Metrological traceable calibration of organic carbon and elemental carbon based on laboratory-generated reference materials

Liu,

Xiao

et al. 2025

Journal of Environmental Sciences

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Assessment of homogeneity and stability of new reference material of passion-flower fruits for proficiency testing: Pesticide residues in purple passion fruit (Passiflora pinnatistipula)

Cited by 4 publications

References 22 publications

Certification of a novel matrix reference material for accurate measurements of aflatoxin M1 in milk powder

Certification of a novel matrix reference material for accurate measurements of aflatoxin M1 in milk powder

Study on production and utilization of a reference material for determination of multi-residue pesticides in tomato matrix

Metrological traceable calibration of organic carbon and elemental carbon based on laboratory-generated reference materials

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