理学院“科学沙龙”系列学术讲座
海洋科学长基计划建设-系列讲座
广东省海洋生物技术重点实验室-系列学术讲座
省市共建海洋灾害预警与防护广东省重点实验室-系列学术讲座
讲座一：
Sample Preparation Strategies for Determination of Non-metals and Their Species by Mass Spectrometry Techniques （基于质谱技术的非金属元素及其形态分析的样品制备策略）
报告人：Márcia Foster Mesko 教授 (Center for Chemical, Pharmaceutical, and Food Sciences, Federal University of Pelotas, Pelotas, Brazil)
时 间：2025年5月9日（周五）上午 10：00-11：00
地 点：桑浦山校区高水平实验楼A314
摘 要：
The determination of non-metals, particularly halogens, provides crucial insights into their influence in the environment and various fields such as nutrition, health, and toxicology. Despite advancements in instrumentation, sample introduction typically involves converting samples into a solution. Traditional sample digestion methods, which often employ large volumes of concentrated reagents, are time-consuming and may necessitate the dilution of digests before analyte determination, potentially compromising detection limits. Even with microwave-assisted closed vessel methods, incomplete digestion is common. Additionally, regarding halogen determination, they can also be lost as unstable volatile compounds in an acid medium. There is a growing trend towards developing green analytical methods that minimize reagent use, reduce waste, streamline analytical steps, and achieve high-efficiency digestion. Ensuring the suitability of digests for subsequent determination techniques is equally critical. This lecture will present the latest advancements in sample preparation aimed at halogen and halogen species determination using inductively coupled plasma mass spectrometry and ion chromatography with mass spectrometry detection.
个人简介：
Dr. Márcia Foster Mesko is a Titular Professor at the Federal University of Pelotas (UFPel), an Affiliate Member of the Brazilian Academy of Sciences, and a Titular Member of the Academy of Pharmaceutical Sciences. She previously served as Director of the Analytical Chemistry Division of the Brazilian Chemical Society and is currently a board member of its main council. She also serves on the editorial boards of the Journal of Analytical Atomic Spectrometry and the Brazilian Journal of Analytical Chemistry. With over 150 publications, 21 book chapters, and five patents (h-index 32), she has received many awards and distinctions, including the L’Oréal–UNESCO “For Women in Science” Award, the JAAS Emerging Investigator Lectureship, and the IUPAC Distinguished Women in Chemistry Award. Her research focuses on the development of green analytical methods for food, pharmaceutical, and biological samples, employing ion chromatography and atomic spectrometry techniques.
marciamesko@yahoo.com.br
讲座二：
Advances and New Options in Sample Preparation for Atomic Spectrometry（原子光谱分析中样品前处理的进展与新策略）
报告人：Érico M. M. Flores 教授（Federal University of Santa Maria, Santa Maria, Brazil）
时 间：2025年5月9日（周五）上午 11：00-12：00
地 点：桑浦山校区高水平实验楼A314
摘 要：
With few exceptions, most of the equipment used in atomic spectrometry requires a previous step for sample digestion that is generally necessary for a convenient analysis. Classical methods for sample digestion and further determination by atomic spectrometry involve the use of a relatively high volume of concentrated reagents (inorganic acids in the case of further metals determination) and a relatively long time for digestion. Moreover, the digestion efficiency of these systems presents some limitations for many matrices. In this sense, even using methods based on microwave-assisted closed vessels, some drawbacks can be present for some matrices, and incompleteness of digestion is frequently reported. Nowadays, there is a trend for the development of methods requiring lower reagent consumption, less analytical steps and lower waste generation combined with high efficiency of digestion. In addition, digests must be suitable for the determination techniques, avoiding excessive dilution or high blank levels. On this aspect, some trends for sample preparation will be presented in this lecture for further element determination. The use of diluted solutions using oxygen pressurized systems with or without UV radiation, use of combustion systems, etc, will be covered. Recent applications will be presented showing the advantages of methods for element determination using ICP-MS and ICP-OES.
个人简介：
Érico M. M. Flores has a permanent position at Federal University of Santa Maria (UFSM), Brazil, as a Titular Professor in the Department of Chemistry. He was the Director of the Analytical Chemistry Division of the Brazilian Chemical Society and Scientific Director of Rio Grande do Sul State Research, and has experience in the development of methods for sample preparation for element determination, speciation analysis using atomic spectrometry, and in process intensification using ultrasound and microwaves. He has published >400 papers, one book and many book chapters and patents in these fields. He is a representative member of several national and international committees (e.g., European Society of Sonochemistry/ESS, ICH, Analytical Chemistry Division of IUPAC, Rio Grande do Sul State Foundation, Coordinator of the National Technical Committee of Pharmaceutical Drugs of the Brazilian Pharmacopea). He developed a new system of microwave-induced combustion that is commercialized in more than 50 countries, is a titular member of the National Council of Brazilian Pharmacopoea and editor or member of many scientific journals (e.g., Ultrasonics Sonochemistry/Elsevier). He has received many international awards and has more than 400 peer-reviewed papers, >17,000 citations, and an h-index of 54. More than 30 students have received the PhD and more than 50 have received the MS degree under his supervision. During his period as the Coordinator of the International Affairs Office of UFSM he was a pioneer in starting or reinforcing the contacts between UFSM and Asian universities, especially in China.
marciamesko@yahoo.com.br
欢迎全校师生参加！
汕头大学海洋与生命学科
广东省海洋生物技术重点实验室
省市共建海洋灾害预警与防护广东省重点实验室
2025年5月8日
