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Determination of Organotins in Aquatic Food by Gas Chromatography with Pulsed Flame Photometric Detection

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A method based on gas chromatography (GC)-pulsed flame photometric detection (PFPD) was developed to determine the levels of organotins in aquatic food. After being purified by gel-permeation chromatography in ethyl actatetetrahydrofuran, the organotin compounds were derivatized by pentylmagnesium bromide. The derivative products were injected into the GC system and detected by PFPD (sulfur mode). The method was validated by analysis of the certified reference material and spiked samples. Recoveries of organotins ranged from 84.1 to 116.6 with relative standard deviation between 1.3 and 16.0 when spiked at levels of 2, 10, and 40 g/kg. The limits of detection varied from 0.1 to 1.2 g/kg for shellfish and 0.1 to 0.5 g/kg for fish. The proposed method was suitable for determining organotins in aquatic foods.
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Document Type: Research Article

Affiliations: 1: National Institute of Nutrition and Food Safety, Chinese Center for Disease Control, Beijing 100050, People's Republic of China. 2: National Institute of Nutrition and Food Safety, Chinese Center for Disease Control, Beijing 100050, People's Republic of China; Animal and Plant and Foodstuff Inspection Center, Tianjin Bureau of China Inspection and Quarantine, Tianjin 300456, People's Republic of China.

Publication date: 01 May 2008

More about this publication?
  • The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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