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<article xsi:noNamespaceSchemaLocation="http://jats.nlm.nih.gov/publishing/1.1/xsd/JATS-journalpublishing1-mathml3.xsd" dtd-version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><front><journal-meta><journal-id journal-id-type="publisher-id">SSR</journal-id><journal-title-group><journal-title>Scientific and Social Research</journal-title></journal-title-group><issn>2661-4332</issn><eissn>2981-9946</eissn><publisher><publisher-name>Bio-Byword Scientific Publishing Pty. Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26689/ssr.v7i10.12750</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title>Quantitation Method Research for the Pyrrolizidine Alkaloids (PAs) Determination in Botanicals by HPLC-MS/MS</title><url>https://artdesignp.com/journal/SSR/7/10/10.26689/ssr.v7i10.12750</url><author>LiFan,ZengKe,HuPengfei,LiJinjing,ZhangYanjun,ChangPeter,SwansonGary</author><pub-date pub-type="publication-year"><year>2025</year></pub-date><volume>7</volume><issue>10</issue><history><date date-type="pub"><published-time>2025-10-29</published-time></date></history><abstract>A HPLC-MS/MS method for the determination of Pyrrolizidine alkaloids (PAs) in green tea, orange pekoe tea, hibiscus flower, chamomile flower, and cardamom seed was developed and validated. Its precision, accuracy, linearity, specificity, LOQ, LOD, and ruggedness were validated following AOAC Guidance for Single Laboratory Validation Procedure. The recovery of the analytes is in a range of 70%–130%. LOQ for 21 PAs in the above botanicals is in a range of 0.8 to 6.5 ppb.</abstract><keywords/></article-meta></front><body/><back><ref-list><ref id="B1" content-type="article"><label>1</label><element-citation publication-type="journal"><p>Rauter AP, Palma FB, Justino J, et al., 2002, Natural Products in the New Millennium: Prospects and Industrial Application (Proceedings of the Phytochemical Society of Europe, Vol. 47). Springer, Dordrecht.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B2" content-type="article"><label>2</label><element-citation publication-type="journal"><p>Wang J, Wang CH, Wang ZT, 2007, Advancement of Investigation on Cytotoxicity and Mechanism of Pyrrolizidine Alkaloids. 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