EA201800453A1 - METHOD FOR REDUCING THE LIMIT OF DETECTION, STABILIZING RESPONSE FACTORS AND IMPROVING THE ACCURACY OF GAS-CHROMATOGRAPHIC DETERMINATION OF MICRO-QUANTITIES OF PESTICIDES IN AGRICULTURAL PRODUCTS - Google Patents

METHOD FOR REDUCING THE LIMIT OF DETECTION, STABILIZING RESPONSE FACTORS AND IMPROVING THE ACCURACY OF GAS-CHROMATOGRAPHIC DETERMINATION OF MICRO-QUANTITIES OF PESTICIDES IN AGRICULTURAL PRODUCTS

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Publication number
EA201800453A1
EA201800453A1 EA201800453A EA201800453A EA201800453A1 EA 201800453 A1 EA201800453 A1 EA 201800453A1 EA 201800453 A EA201800453 A EA 201800453A EA 201800453 A EA201800453 A EA 201800453A EA 201800453 A1 EA201800453 A1 EA 201800453A1
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EA
Eurasian Patent Office
Prior art keywords
pesticides
agricultural products
accuracy
improving
reducing
Prior art date
Application number
EA201800453A
Other languages
Russian (ru)
Other versions
EA033086B1 (en
Inventor
Михаил Фёдорович Заяц
Сергей Михайлович Лещёв
Original Assignee
Белорусский Государственный Университет (Бгу)
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Application filed by Белорусский Государственный Университет (Бгу) filed Critical Белорусский Государственный Университет (Бгу)
Priority to EA201800453A priority Critical patent/EA201800453A1/en
Publication of EA033086B1 publication Critical patent/EA033086B1/en
Publication of EA201800453A1 publication Critical patent/EA201800453A1/en

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  • Sampling And Sample Adjustment (AREA)

Abstract

Изобретение относится к пищевой промышленности, к разделу аналитической химии пищевых продуктов, в частности к способам снижения предела обнаружения, стабилизации факторов отклика и повышения точности газохроматографического определения микроколичеств пестицидов в сельскохозяйственной продукции. Изобретение может быть использовано при контроле безопасности пищевой и сельскохозяйственной продукции по содержанию остаточных количеств пестицидов. Задачей изобретения является разработка способа снижения предела обнаружения, стабилизации факторов отклика и повышения точности газохроматографического определения микроколичеств пестицидов в сельскохозяйственной продукции, позволяющего минимизировать термическое разложение протекторов аналитов, предотвращая выпадение их в осадок, застревание штока шприца при вводе пробы, исключая необходимость тщательно промывать шприц водой или водосодержащей смесью полярного растворителя после каждой инжекции. Поставленная задача достигается тем, что в способе снижения предела обнаружения, стабилизации факторов отклика и повышения точности газохроматографического определения микроколичеств пестицидов в сельскохозяйственной продукции, включающем добавление к приготовленным для хроматографирования пробам раствора протектора аналитов, в качестве протектора аналитов используют 1-глицерилмоноолеат, а его концентрация в приготовленных для хроматографирования пробах составляет от 0,50 до 2,0 мг/см.The invention relates to the food industry, to the section of analytical chemistry of food products, in particular to methods for reducing the detection limit, stabilizing response factors and improving the accuracy of gas chromatographic determination of trace amounts of pesticides in agricultural products. The invention can be used in monitoring the safety of food and agricultural products on the content of residual amounts of pesticides. The objective of the invention is to develop a method for reducing the detection limit, stabilizing response factors and improving the accuracy of gas chromatographic determination of the micro pesticides in agricultural products, which minimizes the thermal decomposition of analyte protectors, preventing them from precipitating, sticking the syringe rod during sample injection, eliminating the need to thoroughly rinse the syringe with water or an aqueous mixture of a polar solvent after each injection. This object is achieved by the fact that in the method of reducing the detection limit, stabilizing response factors and improving the accuracy of gas chromatographic determination of trace amounts of pesticides in agricultural products, including adding analyte protector solution to the samples prepared for chromatography, 1-glyceryl monooleate is used as analyte protector, and its concentration is Samples prepared for chromatography range from 0.50 to 2.0 mg / cm.

EA201800453A 2018-07-06 2018-07-06 METHOD FOR REDUCING THE LIMIT OF DETECTION, STABILIZING RESPONSE FACTORS AND IMPROVING THE ACCURACY OF GAS-CHROMATOGRAPHIC DETERMINATION OF MICRO-QUANTITIES OF PESTICIDES IN AGRICULTURAL PRODUCTS EA201800453A1 (en)

Priority Applications (1)

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EA201800453A EA201800453A1 (en) 2018-07-06 2018-07-06 METHOD FOR REDUCING THE LIMIT OF DETECTION, STABILIZING RESPONSE FACTORS AND IMPROVING THE ACCURACY OF GAS-CHROMATOGRAPHIC DETERMINATION OF MICRO-QUANTITIES OF PESTICIDES IN AGRICULTURAL PRODUCTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EA201800453A EA201800453A1 (en) 2018-07-06 2018-07-06 METHOD FOR REDUCING THE LIMIT OF DETECTION, STABILIZING RESPONSE FACTORS AND IMPROVING THE ACCURACY OF GAS-CHROMATOGRAPHIC DETERMINATION OF MICRO-QUANTITIES OF PESTICIDES IN AGRICULTURAL PRODUCTS

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CN110988202A (en) * 2019-12-31 2020-04-10 九江天赐高新材料有限公司 Method for determining residual glycerin in water-containing amino acid surfactant product
CN113203821B (en) * 2021-04-21 2024-05-31 中国烟草总公司郑州烟草研究院 Application of compound, analysis protectant and analysis method of aroma components in plant extract

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RU2065605C1 (en) * 1994-01-26 1996-08-20 Сочинский научно-исследовательский институт курортологии и физиотерапии МЗ РФ Method of gas-chromatography determination of 4,4'-dichlorodiphenyldichloroethylene in sulfide mineral water
CN101246149B (en) * 2008-03-25 2011-04-20 中国检验检疫科学研究院 Fast high-precision detecting method for animal medicine residue in food

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