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 PRODUCTSInfo
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- 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
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- 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.
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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 |
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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 |
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EA033086B1 EA033086B1 (en) | 2019-08-30 |
EA201800453A1 true EA201800453A1 (en) | 2019-08-30 |
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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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MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ KZ KG TJ TM RU |