Dissertation > Mathematical sciences and chemical > Chemistry > Analytical Chemistry > Instrument analysis ( physics and physical chemistry ) > Photochemical analysis ( spectral analysis method) > Atomic emission spectrometry

Speciation Analysis of Mercury and Arsenic in Aquatic Products

Author LvChao
Tutor DongHuiRu
School Beijing University of Chemical Technology
Course Chemistry
Keywords Mercury speciation Arsenic Speciation Aquatic HPLC-AFS HPLC-ICP-MS
CLC O657.31
Type Master's thesis
Year 2010
Downloads 265
Quotes 2
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Arsenic , mercury compounds are widespread in nature , and great harm to human health . Arsenic, mercury toxicity of the compounds and their morphology closely related , for the arsenic compound , toxic than inorganic arsenic organic arsenic , arsenic , and an organic group combined with the more smaller , toxicity ; for mercury compounds , organic mercury toxic than inorganic mercury , the alkyl mercury toxicity than aryl mercury toxicity . Morphological analysis in the determination of the toxicity of arsenic , mercury content and evaluation more scientific than the determination of the total amount . Marine organisms can absorb and enrichment of arsenic , mercury compounds , aquatic diet is an important source of human intake of both . Therefore , to establish a simple, rapid , accurate and reliable determination of arsenic in aquatic mercury speciation analysis method is very necessary . In this paper, hydrochloric acid extraction, ultrasonic extraction method to extract mercury compounds in the aquatic , using high performance liquid chromatography - atomic fluorescence spectrometry (HPLC-AFS) and high performance liquid chromatography - inductively coupled plasma mass spectrometry (HPLC -ICP -MS ) The two hyphenated techniques were analyzed by HPLC. The effects of the concentration of hydrochloric acid , HPLC conditions , standard solution preparation conditions , and other factors , and precision , spiked recovery and determination of reference material to examine the accuracy of the method . Established analysis method , the analytical results of two methods consistent form of mercury in tuna and other aquatic products and more than a dozen provinces and cities nationwide aquatic dietary compounds . This article also uses water - acetic acid extraction , ultrasonic extraction of arsenic compounds in the aquatic extraction combined with HPLC-ICP-MS analysis of determination . Six kinds of pre-treatment methods for arsenic speciation to determine the conditions of high-performance liquid chromatography analysis comparing both atomic fluorescence spectrometry and inductively coupled plasma mass spectrometry combined with the applicability of the technology ; using precision spiked recycling investigated the accuracy of the method . Established analytical methods , the determination , the experimental results are satisfactory on the the arsenic speciation compound octopus and other aquatic products and more than a dozen provinces and cities nationwide aquatic diet .

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