期刊
JOURNAL OF CHROMATOGRAPHY A
卷 943, 期 1, 页码 39-46出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0021-9673(01)01429-7
关键词
standard addition; shellfish poisoning toxins; toxins
An evaluation of the feasibility of liquid chromatography-mass spectrometry (LC-MS) with atmospheric pressure ionization was made for quantitation of four diarrhetic shellfish poisoning toxins, okadaic acid, dinophysistoxin-1, pectenotoxin-6 and yessotoxin in scallops. When LC-MS was applied to the analysis of scallop extracts, large signal suppressions were observed due to coeluting substances from the column. To compensate for these matrix signal suppressions, the standard addition method was applied. First, the sample was analyzed and then the sample involving the addition of calibration standards is analyzed. Although this method requires two LC-MS runs per analysis, effective correction of quantitative errors was found. (C) 2002 Elsevier Science B.V. All rights reserved.
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