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Разработка и использование метода хромато-масс-спектрометрии для количественного определения летучих N-нитрозоаминов в копченых мясных продуктах

Development and application of gas chromatographymass spectrometry method for quantitive determination of volatile N-nitrosamines in smoked meat products

Разработка и использование метода хромато-масс-спектрометрии для количественного определения летучих N-нитрозоаминов в копченых мясных продуктах

Abstract

The article presents the results of experimental studies on the development of highly sensitive and selective chromatography-mass spectrometry technique for the determination of 9 N-nitrosamines in food samples (sausage products) using distillation and an automatic solid-phase extraction system on Coconut cartridges for sample preparation. In the elaborated conditions of sample preparation (distillation and solid-phase extraction) and chromatography-mass spectrometric analysis, we achieved a high recovery and efficiency of the separation of nine N-nitrosamines. The quantitation limit was at level of 0.0002 mg/kg with maximum error not exceeding 19%. The complex use of the distillation of N-nitrosamines with the addition of potassium hydroxide in combination with the optimal elution scheme for solid-phase extraction and concentrating the distillate into a Coconut carbon cartridge of 6 ml ensures the recovery of N-nitrosamines from the food product sample (sausage products) up to 93.2–100%. The process of approbation of the chromatography-mass spectrometric method in the samples of food products (sausage products) of various manufacturers revealed the content of N-nitrosamines in the concentration range 0.00029±0.000055÷0.350±0.05 mg/kg. The conducted studies of the content of the sum of highly toxic N-nitrosamines (N-nitrosodimethylamine, N-nitrosodiethylamine) made it possible to disclose that in sample No. 5 the maximum allowable concentration was exceeded by 47 times, in samples No. 2 and 16, to 57.5 and 22.9 times and in sample No. 4 to 88 times, respectively.

Приведены результаты экспериментальных исследований по разработке высокочувствительной и селективной хромато-масс-спектрометрической методики определения 9 N-нитрозоаминов в образцах пищевых продуктов (колбасные изделия) с использованием дистилляции и автоматической системы твердофазной экстракции на угольных картриджах на этапе подготовки проб. При оптимально отработанных условиях подготовки пищевых проб к химическому анализу (дистилляция и твердофазной экстракции) и хромато-массспектрометрического определения достигнута высокая эффективность разделения 9 N-нитрозоаминов стандартного образца и чувствительность с нижним пределом 0,0002 мг/кг и максимальной погрешностью не более 19%. Комплексное использование дистилляции N-нитрозоаминов с добавлением калия гидрооксида в сочетании с оптимальной схемой элюирования твердофазной экстракции и концентрированием дистиллята на угольный картридж Coconut обеспечило извлечение N-нитрозоаминов из образцов пищевой продукции (колбасные изделия) на 93,2–100%. В процессе апробации методики в образцах пищевых продуктов (колбасные изделия) различных производителей обнаружено содержание N-нитрозоаминов в диапазоне концентраций 0,00029±0,000055÷0,350± 0,05 мг/кг. Выполненные исследования содержания N-нитрозоаминов по сумме (N-нитрозодиметиламин, N-нитрозодиэтиламин) позволили установить в образце № 5 превышение гигиенического норматива до 47 раз, в образцах № 2 и 16 – до 57,5 и 22,9 раза и в образце № 4 – в 88 раз.

Keywords

твердофазная экстракция, летучие N-нитрозоамины, хромато-масс-спектрометрический метод, копченые мясные продукты, smoked meat products, gas chromatography-mass spectrometry method, solid-phase extraction, volatile N-nitrosamines

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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