Characterization of arsenic in dried baby shrimp (Acetes sp.) using synchrotron-based X-ray spectrometry and LC coupled to ICP-MS/MS

dc.contributor.author Diana Filipa Guimarães en
dc.contributor.author Roberts,AA en
dc.contributor.author Tehrani,MW en
dc.contributor.author Huang,R en
dc.contributor.author Smieska,L en
dc.contributor.author Woll,AR en
dc.contributor.author Lin,S en
dc.contributor.author Parsons,PJ en
dc.contributor.other 6888 en
dc.date.accessioned 2023-05-10T13:31:39Z
dc.date.available 2023-05-10T13:31:39Z
dc.date.issued 2018 en
dc.description.abstract The arsenic content of dried baby shrimp (Acetes sp.) was investigated as part of an independent field study of human exposure to toxic metals/metalloids among the ethnic Chinese community located in Upstate New York. The dried baby shrimp were analyzed in a home environment using a portable X-Ray Fluorescence (XRF) instrument based on monochromatic excitation. Study participants had obtained their dried baby shrimp either from a local Chinese market or prepared them at home. The shrimp are typically between 10-20 mm in size and are consumed whole, without separating the tail from the head. Elevated levels of As were detected using portable XRF, ranging between 5-30 µg g-1. Shrimp samples were taken to the Cornell High Energy Synchrotron Source (CHESS) for Synchrotron Radiation µXRF (SR-µXRF) elemental mapping using a 384-pixel Maia detector system. The Maia detector provided high resolution trace element images for As, Ca, and Br, (among others) and showed localized accumulation of As within the shrimp's cephalothorax (head), and various abdominal segments. As quantification by SR-µXRF was performed using a lobster hepatopancreas reference material pellet (NRC-CNRC TORT-2), with results in good agreement with both portable XRF and ICP-MS. Additional As characterization using µX-ray Absorption Near Edge Spectroscopy (µXANES) with the Maia XRF detector at CHESS identified arsenobetaine and/or arsenocholine as the possible As species present. Further arsenic speciation analysis by LC-ICP-MS/MS confirmed that the majority of As (>95%) is present as the largely non-toxic arsenobetaine species with trace amounts of arsenocholine, methylated As and inorganic As species detected. © The Royal Society of Chemistry. en
dc.identifier P-00P-SWP en
dc.identifier.uri http://dx.doi.org/10.1039/c8ja00094h en
dc.identifier.uri https://repositorio.inesctec.pt/handle/123456789/13997
dc.language eng en
dc.rights info:eu-repo/semantics/openAccess en
dc.title Characterization of arsenic in dried baby shrimp (Acetes sp.) using synchrotron-based X-ray spectrometry and LC coupled to ICP-MS/MS en
dc.type en
dc.type Publication en
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