zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-1538Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESПрямой высокочувствительный анализ свинца в образцах пшеничной муки с помощью лазерно-индуцированной флуоресценции в сочетании с лазерно-искровой эмиссионной спектроскопией при низкоэнергетической УФ-лазерной абляцииDirect and Sensitive Lead Analysis of Wheat Flour Using Laser-Induced Fluorescence Combined with Laser-Induced Breakdown Spectroscopy Under Low-Energy Ultraviolet Laser AblationWangY.WangY.

Пиндиншань

Гуанчжоу

Pingdingshan

Guangzhou

2445658498@qq.comChenY.ChenY.

Гуанчжоу

Guangzhou

LiR.LiR.

Гуанчжоу

Guangzhou

Школа математики и естественных наук Хэнаньского университета городского строительства; Школа физики и оптоэлектроники Южно-Китайского технологического университетаКитайSchool of Mathematics and Science, Henan University of Urban Construction; School of Physics and Optoelectronics, South China University of TechnologyChinaШкола физики и оптоэлектроники Южно-Китайского технологического университетаКитайSchool of Physics and Optoelectronics, South China University of TechnologyChina202429042024912312312Copyright © Wang Y., Chen Y., Li R., 20242024Wang Y., Chen Y., Li R.Wang Y., Chen Y., Li R.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/1538

Разработан прямой и высокочувствительный метод анализа следовых концентраций свинца  с использованием лазерно-индуцированной флуоресценции в сочетании с лазерно-искровой эмиссионной спектроскопией (LIBS-LIF). Пшеничную муку спрессовали в небольшие гранулы и подвергли абляции низкоэнергетическим УФ-излучением с длиной волны 266 нм. Для резонансного возбуждения свинца использован перестраиваемый лазер на красителе. Оптимизированная межимпульсная  задержка 400 нс. Построена калибровочная кривая, предел обнаружения свинца составил 73.8 мкг/л. 

Lead in any food is harmful even at low concentrations. In this study, a direct and highly sensitive lead analysis technique was developed for wheat flour using laser-induced fluorescence combined with laserinduced breakdown spectroscopy. Wheat flour was pressed into small pellets and ablated by a low-energy ultraviolet 266-nm laser. A tunable dye laser constructed in our laboratory was used to resonantly excite the lead. The optimized interpulse time delay was 400 ns. A calibration curve was constructed and the detection limit for lead was 73.8 ppb. This method could be used to directly and sensitively analyze wheat flour for trace concentrations of lead. 

свинецпшеничная мукалазерная абляциясочетание лазерно-индуцированной флуоресценции и лазерно-искровой эмиссионной спектроскопиитоксичные металлы в продуктах питанияleadwheat flourlaser ablationlaser-induced fluorescence combined with laser-induced breakdown spectroscopytoxic metals in foodThis work was supported by the National Natural Science Foundation of China (Grant No. 6187030304), the Fundamental Research Funds for the Central University (Grant No. SCUT 2018ZD45), and the Key Scientific Research Project Plan of Colleges and Universities in Henan Province (Grant No. 23A140026). We thank Gabrielle David, PhD, from Liwen Bianji (Edanz) (www.liwenbianji.cn/) for editing the English text of a draft of this manuscript.ReferencesF. M. Johnson, Mutation Res., 410, 123–140 (1998).F. M. Johnson, Mutation Res., 410, 123–140 (1998).T. I. Lidsky, J. S. Schneider, Brain, 126, 5–19 (2003).T. I. Lidsky, J. S. Schneider, Brain, 126, 5–19 (2003).J. E. Gall, R. S. Boyd, N. Rajakaruna, Environ. 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The authors declare that there are no conflicts of interest present.